NSAclass,NSAmod,class,map unit,source,unit name,description,age,fossil,radiometric age,quadrangle,rock class,Qclass
98,,98,,SD016,Areas not mapped,"Areas not to be filled that lie within coverage, typically not mapped.",Unknown,,,Sumdum,,
98,,98,,TR008,Areas not mapped,"Areas not to be filled that lie within coverage, typically not mapped.",Unknown,,,Taku River,,
98,,98,,JU012,Areas not mapped,"Areas not to be filled that lie within coverage, typically not mapped.",Unknown,,,Juneau,,
100,,4500,Qs,BC006,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Bradfield Canal,Unconsolidated,1000
100,,4500,Qs,CR012,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Craig,Unconsolidated,1000
100,,4500,Qs,JU012,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Juneau,Unconsolidated,1000
100,,4500,Qs,KC013,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Ketchikan,Unconsolidated,1000
100,,4500,Qs,MF011,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Mount Fairweather,Unconsolidated,1000
100,,4500,Qs,PA006,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Port Alexander,Unconsolidated,1000
100,,4500,Qs,PE006,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Petersburg,Unconsolidated,1000
100,,4500,Qs,PR003,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Prince Rupert,Unconsolidated,1000
100,,4500,Qs,SD016,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Sumdum,Unconsolidated,1000
100,,4500,Qs,SI009,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits. ",Quaternary,,,Sitka,Unconsolidated,1000
100,,4500,Qs,SK015,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Skagway,Unconsolidated,1000
100,,4500,Qs,TR008,Surficial sedimentary deposits ,"Unnamed lacustrine, fluvial, colluvial, glacial, beach, and marine deposits.",Quaternary,,,Taku River,Unconsolidated,1000
450,,4510,QTv,CR012,Volcanic rocks ,"Basalt, andesite, dacite and rhyolitic rocks.",Quaternary and Tertiary,,,Craig,Igneous,4500
450,,4510,QTv,KC013,Volcanic rocks ,"Basalt, andesite, dacite and rhyolitic rocks.",Quaternary and Tertiary,,,Ketchikan,Igneous,4500
450,,4510,QTv,PA006,Volcanic rocks ,"Basalt, andesite, dacite and rhyolitic rocks.",Quaternary and Tertiary,,,Port Alexander,Igneous,4500
450,,4510,QTv,PE006,Volcanic rocks ,"Basalt, andesite, dacite and rhyolitic rocks.",Quaternary and Tertiary,,,Petersburg,Igneous,4500
450,,4510,QTv,SI009,Volcanic rocks ,"Basalt, andesite, dacite and rhyolitic rocks.",Quaternary and Tertiary,,,Sitka,Igneous,4500
500,,4540,Ts,MF011,Sedimentary rocks ,"Nonmarine sandstone, shale, conglomerate, and marine calcareous sandstone and siltstone ",Tertiary,,,Mount Fairweather,Sedimentary,
500,,4540,Ts,PE006,Sedimentary rocks ,"Nonmarine sandstone, shale, conglomerate, and marine calcareous sandstone and siltstone ",Tertiary,,,Petersburg,Sedimentary,
500,,4540,Ts,SI009,Sedimentary rocks ,"Nonmarine sandstone, shale, conglomerate, and marine calcareous sandstone and siltstone ",Tertiary,,,Sitka,Sedimentary,
565,,4520,QTs,MF011,Sedimentary rocks ,"Pleistocene to Miocene marine mudstone, siltstone, sandstone, and conglomerate.",Quaternary and Tertiary,,,Mount Fairweather,Sedimentary,
794,,4550,Tsv,SK015,"Sedimentary and volcanic rocks, undivided ","Carbonaceous shale, sandstone, conglomerate, and subordinate volcanic rocks.",Tertiary ,,,Skagway,Sedimentary,
1059,,4530,Tv,JU012,Volcanic rocks ,Oligocene and Eocene basalt and andesite.,Tertiary,,,Juneau,Igneous,
1059,,4530,Tv,MF011,Volcanic rocks ,Oligocene and Eocene basalt and andesite.,Tertiary,,,Mount Fairweather,Igneous,
1059,,4530,Tv,SI009,Volcanic rocks ,Oligocene and Eocene basalt and andesite.,Tertiary,,,Sitka,Igneous,
1250,,5160,Tgr,BC006,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Bradfield Canal,Igneous,
1250,,5160,Tgr,CR012,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Craig,Igneous,
1250,,5160,Tgr,KC013,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Ketchikan,Igneous,
1250,,5160,Tgr,PA006,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Port Alexander,Igneous
1250,,5160,Tgr,PE006,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Petersburg,Igneous
1250,,5160,Tgr,SK015,Granite ,"Biotite +/- hornblende +/- pyroxene granite, alkali granite, quartz monzonite, and subordinate syenite, granodiorite, and diorite.",Tertiary (Miocene and Oligocene),,"Stocks on mainland southeast of Revillagigedo Island yield potassium-argon apparent ages of early Miocene and Oligocene (Berg and others, 1978, 1988).",Skagway,Igneous
1254,,5150,Tgb,BC006,Gabbro ,"Layered and locally zoned bodies of two-pyroxene +/- olivine +/- biotite +/- hornblende +/- quartz gabbro and subordinate troctolite, peridotite, leucogabbro, diorite, and tonalite.",Tertiary (Miocene and Oligocene),,"Stocks on Revilagigedo Island and adjacent area of mainland yield potassium-argon apparent ages of early Miocene and late Oligocene (Smith and Diggles, 1981), and large body (La Perouse gabbro) northwest of Cross Sound yields a 40Ar/39Ar apparent age of Oligocene (Loney and Himmelberg, 1983). ",Bradfield Canal,Igneous
1254,,5150,Tgb,KC013,Gabbro ,"Layered and locally zoned bodies of two-pyroxene +/- olivine +/- biotite +/- hornblende +/- quartz gabbro and subordinate troctolite, peridotite, leucogabbro, diorite, and tonalite.",Tertiary (Miocene and Oligocene),,"Stocks on Revilagigedo Island and adjacent area of mainland yield potassium-argon apparent ages of early Miocene and late Oligocene (Smith and Diggles, 1981), and large body (La Perouse gabbro) northwest of Cross Sound yields a 40Ar/39Ar apparent age of Oligocene (Loney and Himmelberg, 1983). ",Ketchikan,Igneous
1254,,5150,Tgb,MF011,Gabbro ,"Layered and locally zoned bodies of two-pyroxene +/- olivine +/- biotite +/- hornblende +/- quartz gabbro and subordinate troctolite, peridotite, leucogabbro, diorite, and tonalite.",Tertiary (Miocene and Oligocene),,"Stocks on Revilagigedo Island and adjacent area of mainland yield potassium-argon apparent ages of early Miocene and late Oligocene (Smith and Diggles, 1981), and large body (La Perouse gabbro) northwest of Cross Sound yields a 40Ar/39Ar apparent age of Oligocene (Loney and Himmelberg, 1983). ",Mount Fairweather,Igneous
1254,,5150,Tgb,PE006,Gabbro ,"Layered and locally zoned bodies of two-pyroxene +/- olivine +/- biotite +/- hornblende +/- quartz gabbro and subordinate troctolite, peridotite, leucogabbro, diorite, and tonalite.",Tertiary (Miocene and Oligocene),,"Stocks on Revilagigedo Island and adjacent area of mainland yield potassium-argon apparent ages of early Miocene and late Oligocene (Smith and Diggles, 1981), and large body (La Perouse gabbro) northwest of Cross Sound yields a 40Ar/39Ar apparent age of Oligocene (Loney and Himmelberg, 1983). ",Petersburg,Igneous
1254,,5150,Tgb,SI009,Gabbro ,"Layered and locally zoned bodies of two-pyroxene +/- olivine +/- biotite +/- hornblende +/- quartz gabbro and subordinate troctolite, peridotite, leucogabbro, diorite, and tonalite.",Tertiary (Miocene and Oligocene),,"Stocks on Revilagigedo Island and adjacent area of mainland yield potassium-argon apparent ages of early Miocene and late Oligocene (Smith and Diggles, 1981), and large body (La Perouse gabbro) northwest of Cross Sound yields a 40Ar/39Ar apparent age of Oligocene (Loney and Himmelberg, 1983). ",Sitka,Igneous
1273,,5170,Tgd ,MF011,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Mount Fairweather,Igneous
1273,,5170,Tgd ,PA006,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Port Alexander,Igneous
1273,,5170,Tgd ,SI009,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Sitka,Igneous
1273,,5170,Tgd ,SK015,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Skagway,Igneous
1273,Q,5171,Tgd?,JU012,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Juneau,Igneous
1273,Q,5171,Tgd ?,SK015,Granodiorite ,"Biotite +/- hornblende +/- muscovite +/- garnet granodiorite, granite, quartz monzonite, tonalite, and quartz diorite.",Tertiary (Oligocene and Eocene),,"Where dated, these intrusive bodies yield Eocene potassium-argon apparent ages (Loney and others, 1975; Decker and Plafker, 1982; Johnson and Karl, 1985; Brew and others, 1978). ",Skagway,Igneous
1305,,5180,Tg,BC006,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Bradfield Canal,Igneous
1305,,5180,Tg,JU012,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Juneau,Igneous
1305,,5180,Tg,KC013,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Ketchikan,Igneous
1305,,5180,Tg,PE006,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Petersburg,Igneous
1305,,5180,Tg,PR003,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Prince Rupert,Igneous
1305,,5180,Tg,SD016,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Sumdum,Igneous
1305,,5180,Tg,SK015,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Skagway,Igneous
1305,,5180,Tg,TR008,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Taku River,Igneous
1305,Q,5181,Tg?,JU012,Granodiorite ,"Biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite.",Tertiary (Eocene),,"Concordant potassium-argon apparent ages on hornblende and biotite (Forbes and Engels, 1970; Smith and others, 1979) and uranium-lead (zircon) apparent ages (Gehrels and others, 1984) indicate emplacement during Eocene time.   ",Juneau,Igneous
1350,,5190,Tgt,PE006,Granodiorite and tonalite ,"Biotite-dominant, hornblende-bearing granodiorite and tonalite containing local foliation and layering.",Tertiary (Paleocene),,"Uranium-lead (zircon) data indicate emplacement during Paleocene time (Gehrels and others, 1984). ",Petersburg,Igneous
1350,,5190,Tgt,SK015,Granodiorite and tonalite ,"Biotite-dominant, hornblende-bearing granodiorite and tonalite containing local foliation and layering.",Tertiary (Paleocene),,"Uranium-lead (zircon) data indicate emplacement during Paleocene time (Gehrels and others, 1984). ",Skagway,Igneous
1350,Q,5191,Tgt?,BC006,Granodiorite and tonalite ,"Biotite-dominant, hornblende-bearing granodiorite and tonalite containing local foliation and layering.",Tertiary (Paleocene),,"Uranium-lead (zircon) data indicate emplacement during Paleocene time (Gehrels and others, 1984). ",Bradfield Canal,Igneous
1350,Q,5191,Tgt?,JU012,Granodiorite and tonalite ,"Biotite-dominant, hornblende-bearing granodiorite and tonalite containing local foliation and layering.",Tertiary (Paleocene),,"Uranium-lead (zircon) data indicate emplacement during Paleocene time (Gehrels and others, 1984). ",Juneau,Igneous
1350,Q,5191,Tgt?,PE006,Granodiorite and tonalite ,"Biotite-dominant, hornblende-bearing granodiorite and tonalite containing local foliation and layering.",Tertiary (Paleocene),,"Uranium-lead (zircon) data indicate emplacement during Paleocene time (Gehrels and others, 1984). ",Petersburg,Igneous
1655,,5210,TKg,BC006,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Paleocene) and Cretaceous ,,,Bradfield Canal,Igneous
1655,,5210,TKg,KC013,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Paleocene) and Cretaceous ,,,Ketchikan,Igneous
1655,,5210,TKg,PE006,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. Includes a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv).  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Tertiary (Paleocene) and Cretaceous ,,,Petersburg,Igneous
1655,,5210,TKg,PR003,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas",Tertiary (Paleocene) and Cretaceous ,,,Prince Rupert,Igneous
1655,,5210,TKg,SD016,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas",Tertiary (Paleocene) and Cretaceous ,,,Sumdum,Igneous
1655,,5210,TKg,SK015,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas",Tertiary (Paleocene) and Cretaceous ,,,Skagway,Igneous
1655,Q,5211,TKg?,SD016,Granodiorite ,"Diverse assemblage of generally foliated and layered granodiorite, quartz monzonite, tonalite, and their metamorphic equivalents. May include a significant component of pre-Tertiary metasedimentary and metavolcanic rocks (pTmsv) in some areas",Tertiary (Paleocene) and Cretaceous ,,,Sumdum,Igneous
1662,,5200,TKt,BC006,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Bradfield Canal,Igneous
1662,,5200,TKt,JU012,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Juneau,Igneous
1662,,5200,TKt,KC013,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Ketchikan,Igneous
1662,,5200,TKt,PE006,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Petersburg,Igneous
1662,,5200,TKt,PR003,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Prince Rupert,Igneous
1662,,5200,TKt,SD016,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Sumdum,Igneous
1662,,5200,TKt,SK015,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Skagway,Igneous
1662,,5200,TKt,TR008,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Taku River,Igneous
1662,Q,5201,TKt?,PE006,Tonalite ,"Hornblende-dominant, biotite-bearing tonalite and subordinate quartz diorite found as steeply dipping, foliated, and locally lineated sills.",Tertiary (Paleocene) and Cretaceous ,,"Field and uranium-lead (zircon) data indicate emplacement in Paleocene and Late Cretaceous time, during waning stages of deformation and metamorphism in Coast Mountains (Gehrels and others, 1984; Brew and Ford, 1981).    ",Petersburg,Igneous
2340,,4600,KJv,JU012,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Juneau,Igneous
2340,,4600,KJv,KC013,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Ketchikan,Igneous
2340,,4600,KJv,PE006,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Petersburg,Igneous
2340,,4600,KJv,SD016,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Sumdum,Igneous
2340,,4600,KJv,SI009,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Sitka,Igneous
2340,Q,4601,KJv?,CR012,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Craig,Igneous
2340,Q,4601,KJv?,KC013,Volcanic rocks ,"Andesite to basaltic flows, flow breccia, agglomerate, and tuff (generally containing conspicuous clinopyroxene phenocrysts), subordinate graywacke and mudstone, and regionally metamorphosed and deformed equivalents of these strata. Greenschist facies metamorphism in some areas yielded common rock types of greenstone and greenschist.",Cretaceous and Jurassic ,,,Ketchikan,Igneous
2480,,5220,Kgt,BC006,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Bradfield Canal,Igneous
2480,,5220,Kgt,CR012,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Craig,Igneous
2480,,5220,Kgt,JU012,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Juneau,Igneous
2480,,5220,Kgt,KC013,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Ketchikan,Igneous
2480,,5220,Kgt,PE006,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Petersburg,Igneous
2480,,5220,Kgt,SD016,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Sumdum,Igneous
2480,,5220,Kgt,SK015,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Skagway,Igneous
2480,,5220,Kgt,TR008,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Taku River,Igneous
2480,Q,5220,Kgt,CR012,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Craig,Igneous
2480,Q,5221,Kgt?,PR003,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Prince Rupert,Igneous
2480,Q,5221,Kgt?,KC013,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Ketchikan,Igneous
2480,Q,5221,Kgt?,CR012,Granodiorite and tonalite ,"Small plutons to batholiths of granodiorite, tonalite, and subordinate quartz monzonite to quartz diorite and diorite. Most bodies contain biotite and hornblende, many have magmatic epidote and garnet and are plagioclase porphyritic, and some contain pyroxene and (or) muscovite.",Cretaceous ,,"Potassium-argon and 40Ar/39Ar, and uranium-lead apparent ages of these bodies are generally Late Cretaceous (Smith and Diggles, 1981; Brew and others, 1984; Sutter and Crawford, 1985; Rubin and Saleeby, 1987). ",Craig,Igneous
2493,,5250,Kg,CR012,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Craig,Igneous
2493,,5250,Kg,DE008,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Dixon Entrance,Igneous
2493,,5250,Kg,JU012,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Juneau,Igneous
2493,,5250,Kg,MF011,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Mount Fairweather,Igneous
2493,,5250,Kg,PA006,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Port Alexander,Igneous
2493,,5250,Kg,PE006,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Petersburg,Igneous
2493,,5250,Kg,SI009,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Sitka,Igneous
2493,,5250,Kg,SK015,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Skagway,Igneous
2493,Q,5250,Kg,CR012,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Craig,Igneous
2493,Q,5251,Kg?,JU012,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Juneau,Igneous
2493,Q,5251,Kg?,SI009,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Sitka,Igneous
2493,Q,5251,Kg?,PE006,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Petersburg,Igneous
2493,Q,5251,Kg?,DE008,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Dixon Entrance,Igneous
2493,Q,5251,Kg?,CR012,Granodiorite ,"A heterogeneous suite of plutons consisting primarily of biotite, hornblende, magnetite +/- pyroxene +/- garnet granodiorite and subordinate quartz monzonite, tonalite, trondhjemite, and quartz diorite.",Cretaceous ,,"Potassium-argon apparent ages record emplacement primarily during Early Cretaceous time, although similar intrusive bodies northwest of Glacier Bay in Canada also yield Jurassic potassium-argon apparent ages (Chris Dodds, oral commun., 1984). ",Craig,Igneous
2494,,5230,Kdb,SK015,Diorite and gabbro,Hornblende diorite and gabbro that grades laterally into granodiorite and quartz diorite (unit Kgt).,Cretaceous,,"Potassium-argon ages are Late Cretaceous (Redman and others, 1984).",Skagway,Igneous
2495,,5240,Kum,CR012,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Craig,Igneous
2495,,5240,Kum,KC013,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Ketchikan,Igneous
2495,,5240,Kum,PA006,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Port Alexander,Igneous
2495,,5240,Kum,PE006,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Petersburg,Igneous
2495,,5240,Kum,PR003,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Prince Rupert,Igneous
2495,,5240,Kum,SD016,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Sumdum,Igneous
2495,,5240,Kum,SI009,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Sitka,Igneous
2495,,5240,Kum,SK015,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Skagway,Igneous
2495,Q,5241,Kum?,JU012,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Juneau,Igneous
2495,Q,5241,Kum?,TR008,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Taku River,Igneous
2495,Q,5241,Kum?,SI009,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Sitka,Igneous
2495,Q,5241,Kum?,SD016,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Sumdum,Igneous
2495,Q,5241,Kum?,PA006,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Port Alexander,Igneous
2495,Q,5241,Kum?,KC013,Ultramafic rocks ,"Ultramafic intrusive bodies of magnetite-bearing hornblende clinopyroxenite and subordinate dunite, peridotite, and hornblendite (Taylor, 1967). Several complexes are concentrically zoned from a core of dunite to rocks containing progressively less olivine and more hornblende and magnetite.",Cretaceous ,,"Potassium-argon apparent ages of the ultramafic rocks indicate emplacement during Early Cretaceous time (Lanphere and Eberlein, 1966). ",Ketchikan,Igneous
2540,,5260,Kd,CR012,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Craig,Igneous
2540,,5260,Kd,DE008,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Dixon Entrance,Igneous
2540,,5260,Kd,JU012,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Juneau,Igneous
2540,,5260,Kd,MF011,Diorite ,"Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,,,Mount Fairweather,Igneous
2540,,5260,Kd,SI009,Diorite ,"Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,,,Sitka,Igneous
2540,,5260,Kd,SK015,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Skagway,Igneous
2540,Q,5261,Kd?,PE006,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Petersburg,Igneous
2540,Q,5261,Kd?,CR012,Diorite ,Primarily hornblende +/- biotite +/- clinopyroxene diorite and subordinate quartz diorite and gabbro.,Cretaceous ,,,Craig,Igneous
2550,,5270,Kgb,MF011,Gabbro,"Primarily clinopyroxene (generally augite) +/- hornblende +/- biotite +/- olivine gabbro, leucogabbro, and subordinate norite, syenite, and pyroxenite.",Cretaceous ,,,Mount Fairweather,Igneous
2550,,5270,Kgb,SI009,Gabbro,"Primarily clinopyroxene (generally augite) +/- hornblende +/- biotite +/- olivine gabbro, leucogabbro, and subordinate norite, syenite, and pyroxenite.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,,,Sitka,Igneous
2820,,4590,KJs,CR012,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Craig,Sedimentary
2820,,4590,KJs,JU012,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Juneau,Sedimentary
2820,,4590,KJs,KC013,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Ketchikan,Sedimentary
2820,,4590,KJs,PE006,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Petersburg,Sedimentary
2820,,4590,KJs,SD016,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Sumdum,Sedimentary
2820,,4590,KJs,SI009,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Sitka,Sedimentary
2820,,4590,KJs,SK015,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Skagway,Sedimentary
2820,Q,4591,KJs?,BC006,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Bradfield Canal,Sedimentary
2820,Q,4591,KJs?,PE006,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Petersburg,Sedimentary
2820,Q,4591,KJs?,CR012,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Craig,Sedimentary
2820,Q,4591,KJs?,KC013,Sedimentary rocks ,"Marine graywacke and mudstone, subordinate conglomerate and andesitic to basaltic volcanic rocks, minor limestone, and regionally metamorphosed and deformed equivalents of these strata. Metamorphic grade generally increase from subgreenschist facies or nonmetamorphosed on southwest to greenschist and in some areas amphibolite facies to northeast. Rock types in higher grade parts of unit are primarily phyllite, schist, and gneiss.",Cretaceous and Jurassic ,"Fossils range in age from Cenomanian or Albian to Late and possibly Middle Jurassic (Breg and others, 1972; Brew and others, 1984). ",,Ketchikan,Sedimentary
2822,,4610,KJsv,JU012,"Sedimentary and volcanic rocks, undivided ","Moderately deformed and metamorphosed graywacke, mudstone, sandstone, and andesitic to basaltic rocks.",Cretaceous and Jurassic,,,Juneau,Metamorphic
2840,,5050,Ksm,PA006,Sedimentary rocks ,"Includes sedimentary and metasedimentary rocks that are similar in structural and metamorphic characteristics to rocks in the Cretaceous sedimentary and volcanic melange unit (Ksvm). Common lithic types include dark-gray phyllite, light-gray quartzite, and graywacke semischist. Age of formation of this melange unit is constrained by stratigraphic and structural similarities with rocks in associated Cretaceous melange units (units Ksvm and Kvm).",Cretaceous ,Fossils were not recovered from rocks in this unit. ,,Port Alexander,Sedimentary
2840,,5050,Ksm,SI009,Sedimentary rocks ,"Includes sedimentary and metasedimentary rocks that are similar in structural and metamorphic characteristics to rocks in the Cretaceous sedimentary and volcanic melange unit (Ksvm). Common lithic types include dark-gray phyllite, light-gray quartzite, and graywacke semischist. Age of formation of this melange unit is constrained by stratigraphic and structural similarities with rocks in associated Cretaceous melange units (units Ksvm and Kvm).  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,Fossils were not recovered from rocks in this unit. ,,Sitka,Sedimentary
2865,,4580,Ksv,CR012,"Sedimentary and volcanic rocks, undivided ","Interbedded sedimentary and volcanic rocks, and their metamorphosed equivalents.",Cretaceous,,,Craig,Metamorphic
2865,,4580,Ksv,MF011,"Sedimentary and volcanic rocks, undivided ","Interbedded sedimentary and volcanic rocks, and their metamorphosed equivalents.",Cretaceous,,,Mount Fairweather,Metamorphic
2865,,4580,Ksv,SK015,"Sedimentary and volcanic rocks, undivided ","Interbedded sedimentary and volcanic rocks, and their metamorphosed equivalents.",Cretaceous,,,Skagway,Metamorphic
2865,Q,4581,Ksv?,CR012,"Sedimentary and volcanic rocks, undivided ","Interbedded sedimentary and volcanic rocks, and their metamorphosed equivalents.",Cretaceous,,,Craig,Metamorphic
2866,,4560,Ks,MF011,Sedimentary rocks ,"Sandstone and mudstone turbidites and subordinate conglomerate and regionally metamorphosed carbonaceous siltstone, volcanogenic graywacke, mudstone, and minor conglomerate.",Cretaceous,"Early Cretaceous fossils were found in the Sitka Graywacke on Kruzof Island (Reed and Coats, 1941)",,Mount Fairweather,Sedimentary
2866,,4560,Ks,PA006,Sedimentary rocks ,"Sandstone and mudstone turbidites and subordinate conglomerate and regionally metamorphosed carbonaceous siltstone, volcanogenic graywacke, mudstone, and minor conglomerate.",Cretaceous,"Early Cretaceous fossils were found in the Sitka Graywacke on Kruzof Island (Reed and Coats, 1941)",,Port Alexander,Sedimentary
2866,,4560,Ks,SI009,Sedimentary rocks ,"Sandstone and mudstone turbidites and subordinate conglomerate and regionally metamorphosed carbonaceous siltstone, volcanogenic graywacke, mudstone, and minor conglomerate.",Cretaceous,"Early Cretaceous fossils were found in the Sitka Graywacke on Kruzof Island (Reed and Coats, 1941)",,Sitka,Sedimentary
2891,,4570,Kv,MF011,Volcanic rocks ,"Schist, gneiss, and amphibolite.",Cretaceous ,,,Mount Fairweather,Metamorphic
2920,,5290,KJgb,CR012,Gabbro,Two-pyroxene gabbro and subordinate hornblende +/- biotite gabbro and diorite.,Cretaceous and Jurassic ,,,Craig,Igneous
2920,,5291,KJgd?,JU012,Gabbro,"Two-pyroxene gabbro and subordinate hornblende +/- biotite gabbro and diorite.  (Polygon erroneously labeled KJgd on map, should have been KJgb).",Cretaceous and Jurassic ,,,Juneau,Igneous
2950,,5040,Ksvm,MF011,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common rock types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic(?) or Triassic(?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980)",Mount Fairweather,Tectonite
2950,,5040,Ksvm,PA006,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common rock types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic(?) or Triassic(?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980)",Port Alexander,Tectonite
2950,,5040,Ksvm,SI009,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common rock types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic(?) or Triassic(?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980)",Sitka,Tectonite
2950,,5040,Ksvm,SK015,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common rock types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic(?) or Triassic(?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980)",Skagway,Tectonite
2950,Q,5041,Ksvm?,MF011,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common rock types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic(?) or Triassic(?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980)",Mount Fairweather,Tectonite
2950,Q,5041,Ksvm?,SI009,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and Marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common lithic types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic (?) or Triassic (?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980) [...]",Sitka,Tectonite
2950,,5190,Ksvm,JU012,"Sedimentary and volcanic rocks, undivided ","Marine sedimentary and volcanic rocks, and their metamorphic equivalents, that are bounded by fault or shear zones; and Marine sedimentary and volcanic rocks, and their metamorphic equivalents, enclosed in a matrix of moderately metamorphosed and penetratively sheared graywacke, argillite, tuff, and pillow breccia. Common lithic types in blocks include tuffaceous argillite, tuff, greenstone, graywacke, chert, limestone, marble, phyllite, schist, and minor granitic rocks.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous ,"Fossils from blocks are Early Cretaceous, Late Jurassic (?) or Triassic (?) in age (Loney and others, 1975; Johnson and Karl, 1985).  Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980); (2) Early Cretaceous fossils in sedimentary matrix material near Sitka on Baranof Island (Plafker and others, 1976); and (3) Early Cretaceous fossils in matrix material near the coast northwest of Cross Sound (Plafker and others, 1977; George Plafker, written commun., 1984). ","Minimum age of unit is constrained by (1) mid-Cretaceous potassium-argon apparent ages on metamorphic minerals in the melange on Chichagof Island (Decker and others, 1980) [...]",Juneau,Tectonite
2953,,5060,Kvm,PA006,Volcanic rocks ,"Includes mafic volcanic and metavolcanic rocks that resemble rocks in the Cretaceous sedimentary and volcanic rocks melange unit (Ksvm) in structural and metamorphic characteristics. Common rock types include greenstone, greenschist, and minor phyllite, graywacke semischist, marble, and metachert.",Cretaceous ,,,Port Alexander,Tectonite
2953,,5060,Kvm,SI009,Volcanic rocks ,"Includes mafic volcanic and metavolcanic rocks that resemble rocks in the Cretaceous sedimentary and volcanic rocks melange unit (Ksvm) in structural and metamorphic characteristics. Common lithic types include greenstone, greenschist, and minor phyllite, graywacke semischist, marble, and metachert.",Cretaceous ,,,Sitka,Tectonite
2971,,5080,KDsd,PE006,Sedimentary rocks ,"Deformed, disrupted, and metamorphosed graywacke, siltstone, mudstone, and subordinate chert, limestone, and volcanic and intrusive rocks that belong to a belt of regionally disrupted rocks in the Kupreanof-Etolin Islands area. Common metamorphic rock types include subgreenschist- to greenschist-facies graywacke semischist, phyllite, argillite, slate, and subordinate greenstone, greenschist, and marble.",Cretaceous to Devonian ,,,Petersburg,Tectonite
2971,,5080,KDsd,SD016,Sedimentary rocks ,"Deformed, disrupted, and metamorphosed graywacke, siltstone, mudstone, and subordinate chert, limestone, and volcanic and intrusive rocks that belong to a belt of regionally disrupted rocks in the Kupreanof-Etolin Islands area. Common metamorphic rock types include subgreenschist- to greenschist-facies graywacke semischist, phyllite, argillite, slate, and subordinate greenstone, greenschist, and marble.",Cretaceous to Devonian ,,,Sumdum,Tectonite
2972,,5090,KDvd,PE006,Volcanic rocks ,"Deformed, disrupted, and metamorphosed mafic to intermediate and minor felsic volcanic rocks that belong to a belt of regionally disrupted rocks in the Kupreanof-Zarembo Islands area. Rocks generally metamorphosed to greenschist and greenstone.",Cretaceous to Devonian ,,,Petersburg,Tectonite
2972,,5090,KDvd,SD016,Volcanic rocks ,"Deformed, disrupted, and metamorphosed mafic to intermediate and minor felsic volcanic rocks that belong to a belt of regionally disrupted rocks in the Kupreanof-Zarembo Islands area. Rocks generally metamorphosed to greenschist and greenstone.",Cretaceous to Devonian ,,,Sumdum,Tectonite
2990,,5280,KJd,KC013,Diorite ,Metamorphosed and moderately deformed diorite and subordinate quartz diorite and gabbro.,Cretaceous and Jurassic ,,A small quartz diorite body near northern Annette Island yielded a Cretaceous potassium-argon apparent age; the other bodies are undated. ,Ketchikan,Igneous
2990,Q,5281,KJd?,CR012,Diorite ,Metamorphosed and moderately deformed diorite and subordinate quartz diorite and gabbro. ,Cretaceous and Jurassic ,,A small quartz diorite body near northern Annette Island yielded a Cretaceous potassium-argon apparent age; the other bodies are undated. ,Craig,Igneous
2990,Q,5281,KJd?,KC013,Diorite ,Metamorphosed and moderately deformed diorite and subordinate quartz diorite and gabbro.,Cretaceous and Jurassic ,,A small quartz diorite body near northern Annette Island yielded a Cretaceous potassium-argon apparent age; the other bodies are undated. ,Ketchikan,Igneous
3404,,5310,Jt,SI009,Tonalite,Biotite and hornblende tonalite and quartz diorite.,Jurassic ,,"Biotite and hornblende tonalite and quartz diorite on Chichagof Island that yielded a Middle Jurassic potassium-argon (hornblende) apparent age (Loney and others, 1975). ",Sitka,Igneous
3410,,5300,Jgr,DE008,Granite ,Peralkaline aegerine and arfvedsonite granite.,Jurassic ,,"Peralkaline aegerine and arfvedsonite granite (Bokan Mountain Granite) on southern Prince of Wales Island (MacKevett, 1963) yielded Jurassic potassium-argon (Lanphere and others, 1964), uranium-lead (zircon) (Saint-Andre and others, 1983), and rubidium-strontium (Armstrong, 1985) apparent ages. ",Dixon Entrance,Igneous
3410,Q,5301,Jgr?,CR012,Granite ,Peralkaline aegerine and arfvedsonite granite.,Jurassic ,,"Peralkaline aegerine and arfvedsonite granite (Bokan Mountain Granite) on southern Prince of Wales Island (MacKevett, 1963) yielded Jurassic potassium-argon (Lanphere and others, 1964), uranium-lead (zircon) (Saint-Andre and others, 1983), and rubidium-strontium (Armstrong, 1985) apparent ages. ",Craig,Igneous
3620,,5340,Trg,BC006,Granodiorite ,Hornblende and biotite granodiorite and minor quartz diorite.,Triassic ,,"Unit yielded a latest Triassic potassium-argon (hornblende) apparent age (Smith and Diggles, 1981). ",Bradfield Canal,Igneous
3620,,5340,Trg,KC013,Granodiorite ,Hornblende and biotite granodiorite and minor quartz diorite.,Triassic ,,"Unit yielded a latest Triassic potassium-argon (hornblende) apparent age (Smith and Diggles, 1981). ",Ketchikan,Igneous
3900,,5320,JTrd,JU012,Diorite ,Hornblende and biotite diorite (Jualin Diorite).,Jurassic and (or) Triassic ,,,Juneau,Igneous
4000,,4670,Trsc,KC013,"Clastic sedimentary and carbonate rocks, undivided ","Unnamed, moderately deformed and metamorphosed graphitic limestone.",Triassic ,,,Ketchikan,Metamorphic
4320,,5330,Trgb,KC013,Gabbro,Two-pyroxene gabbro.,Triassic,,"Two-pyroxene gabbro on Duke Island (Irvine, 1974) and Percy Islands (Berg and others, 1978, 1988) that yields a Late Triassic uranium-lead (zircon) apparent age (Gehrels and others, 1987).  ",Ketchikan,Igneous
4320,,5330,Trgb,PR003,Gabbro,Two-pyroxene gabbro.,Triassic,,"Two-pyroxene gabbro on Duke Island (Irvine, 1974) and Percy Islands (Berg and others, 1978, 1988) that yields a Late Triassic uranium-lead (zircon) apparent age (Gehrels and others, 1987).  ",Prince Rupert,Igneous
4320,Q,5331,Trgb?,PR003,Gabbro,Two-pyroxene gabbro.,Triassic,,"Two-pyroxene gabbro on Duke Island (Irvine, 1974) and Percy Islands (Berg and others, 1978, 1988) that yields a Late Triassic uranium-lead (zircon) apparent age (Gehrels and others, 1987).  ",Prince Rupert,Igneous
4420,,4660,Trb,SI009,Basaltic rocks ,"Basaltic flows and flow breccia (Goon Dip Greenstone) that were deposited, at least in part, in subaerial environments, and unnamed basalt.",Triassic,Basalt near Haines yields Carnian fossils and is also interpreted by Davis and Plafker (1985) to be correlative with the Nikolai Greenstone. ,,Sitka,Sedimentary
4420,,4660,Trb,SK015,Basaltic rocks ,"Basaltic flows and flow breccia (Goon Dip Greenstone) that were deposited, at least in part, in subaerial environments, and unnamed basalt.",Triassic,Basalt near Haines yields Carnian fossils and is also interpreted by Davis and Plafker (1985) to be correlative with the Nikolai Greenstone. ,,Skagway,Sedimentary
4470,,4620,Trs,SI009,Sedimentary rocks ,"Upper Triassic conglomerate, limestone, and calcareous siltstone and sandstone, silty limestone, and conglomerate and sedimentary breccia.",Triassic,,,Sitka,Sedimentary
4470,Q,4621,Trs?,CR012,Sedimentary rocks ,"Upper Triassic conglomerate, limestone, and calcareous siltstone and sandstone, silty limestone, and conglomerate and sedimentary breccia.",Triassic,,,Craig,Sedimentary
4471,,4640,Trsv,KC013,"Sedimentary and volcanic rocks, undivided ","Black shale, shaly limestone, siltstone, sandstone, conglomerate, and limestone; felsic, intermediate, and mafic flows; and minor black chert. Rocks vary from relatively unmetamorphosed to as high as greenschist facies. Common rock types in higher grade areas include phyllite, slate, semischist, marble, greenschist, and greenstone.",Triassic ,,,Ketchikan,Sedimentary
4471,,4640,Trsv,PE006,"Sedimentary and volcanic rocks, undivided ","Black shale, shaly limestone, siltstone, sandstone, conglomerate, and limestone; felsic, intermediate, and mafic flows; and minor black chert. Rocks vary from relatively unmetamorphosed to as high as greenschist facies. Common rock types in higher grade areas include phyllite, slate, semischist, marble, greenschist, and greenstone.",Triassic ,,,Petersburg,Sedimentary
4471,,4640,Trsv,SD016,"Sedimentary and volcanic rocks, undivided ","Black shale, shaly limestone, siltstone, sandstone, conglomerate, and limestone; felsic, intermediate, and mafic flows; and minor black chert. Rocks vary from relatively unmetamorphosed to as high as greenschist facies. Common rock types in higher grade areas include phyllite, slate, semischist, marble, greenschist, and greenstone.",Triassic ,,,Sumdum,Sedimentary
4471,,4640,Trsv,SI009,"Sedimentary and volcanic rocks, undivided ","Black shale, shaly limestone, siltstone, sandstone, conglomerate, and limestone; felsic, intermediate, and mafic flows; and minor black chert. Rocks vary from relatively unmetamorphosed to as high as greenschist facies. Common rock types in higher grade areas include phyllite, slate, semischist, marble, greenschist, and greenstone.",Triassic ,,,Sitka,Sedimentary
4473,,4650,Trc,KC013,Carbonate rocks ,"Massive to thick-bedded limestone and minor dolomite in most areas, but in Keku Strait unit includes thin-bedded, dark-gray limestone, and on Chichagof Isalnd unit consists of massive white to gray marble (Whitestripe Marble).",Triassic,Diagnostic fossils from limestone and dolomite are Late Triassic in age. ,,Ketchikan,Sedimentary
4473,,4650,Trc,PA006,Carbonate rocks ,"Massive to thick-bedded limestone and minor dolomite in most areas, but in Keku Strait unit includes thin-bedded, dark-gray limestone, and on Chichagof Isalnd unit consists of massive white to gray marble (Whitestripe Marble).",Triassic,Diagnostic fossils from limestone and dolomite are Late Triassic in age. ,,Port Alexander,Sedimentary
4473,,4650,Trc,PE006,Carbonate rocks ,"Massive to thick-bedded limestone and minor dolomite in most areas, but in Keku Strait unit includes thin-bedded, dark-gray limestone, and on Chichagof Isalnd unit consists of massive white to gray marble (Whitestripe Marble).",Triassic,Diagnostic fossils from limestone and dolomite are Late Triassic in age. ,,Petersburg,Sedimentary
4473,,4650,Trc,SI009,Carbonate rocks ,"Massive to thick-bedded limestone and minor dolomite in most areas, but in Keku Strait unit includes thin-bedded, dark-gray limestone, and on Chichagof Isalnd unit consists of massive white to gray marble (Whitestripe Marble).",Triassic,Diagnostic fossils from limestone and dolomite are Late Triassic in age. ,,Sitka,Sedimentary
4474,,4630,Trv,KC013,Volcanic rocks (rhyolitic to basaltic),"Basaltic pillow flows, pillow breccia and breccia; rhyolitic tuff with calcareous interbeds, flow breccia, and banded ash-flow tuff, and subordinate andesitic breccia and aquagene tuff. Rocks in most areas are moderately recrystallized and deformed.",Triassic,Fossils from interbedded rocks or from conformable adjacent strata indicate deposition during Norian and Carnian time. ,,Ketchikan,Igneous
4474,,4630,Trv,PA006,Volcanic rocks (rhyolitic to basaltic),"Basaltic pillow flows, pillow breccia and breccia; rhyolitic tuff with calcareous interbeds, flow breccia, and banded ash-flow tuff, and subordinate andesitic breccia and aquagene tuff. Rocks in most areas are moderately recrystallized and deformed.",Triassic,Fossils from interbedded rocks or from conformable adjacent strata indicate deposition during Norian and Carnian time. ,,Port Alexander,Igneous
4474,,4630,Trv,PE006,Volcanic rocks (rhyolitic to basaltic),"Basaltic pillow flows, pillow breccia and breccia; rhyolitic tuff with calcareous interbeds, flow breccia, and banded ash-flow tuff, and subordinate andesitic breccia and aquagene tuff. Rocks in most areas are moderately recrystallized and deformed.",Triassic,Fossils from interbedded rocks or from conformable adjacent strata indicate deposition during Norian and Carnian time. ,,Petersburg,Igneous
4474,,4630,Trv,SD016,Volcanic rocks (rhyolitic to basaltic),"Basaltic pillow flows, pillow breccia and breccia; rhyolitic tuff with calcareous interbeds, flow breccia, and banded ash-flow tuff, and subordinate andesitic breccia and aquagene tuff. Rocks in most areas are moderately recrystallized and deformed.",Triassic,Fossils from interbedded rocks or from conformable adjacent strata indicate deposition during Norian and Carnian time. ,,Sumdum,Igneous
4474,,4630,Trv,SI009,Volcanic rocks (rhyolitic to basaltic),"Basaltic pillow flows, pillow breccia and breccia; rhyolitic tuff with calcareous interbeds, flow breccia, and banded ash-flow tuff, and subordinate andesitic breccia and aquagene tuff. Rocks in most areas are moderately recrystallized and deformed.",Triassic,Fossils from interbedded rocks or from conformable adjacent strata indicate deposition during Norian and Carnian time. ,,Sitka,Igneous
4521,,4930,TrPc,CR012,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Craig,Metamorphic
4521,,4930,TrPc,JU012,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Juneau,Metamorphic
4521,Q,4930,TrPc?,KC013,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Ketchikan,Metamorphic
4521,,4930,TrPc,PE006,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Petersburg,Metamorphic
4521,Q,4931,TrPc?,CR012,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Craig,Metamorphic
4521,Q,4931,TrPc?,PE006,Carbonate rocks ,Unfossiliferous marble.,Triassic and (or) Permian ,,,Petersburg,Metamorphic
5010,,4880,KPs,BC006,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Bradfield Canal,Sedimentary
5010,,4880,KPs,JU012,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Juneau,Sedimentary
5010,,4880,KPs,KC013,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Ketchikan,Sedimentary
5010,,4880,KPs,PE006,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Petersburg,Sedimentary
5010,,4880,KPs,SD016,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Sumdum,Sedimentary
5010,,4880,KPs,TR008,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Taku River,Sedimentary
5010,Q,4881,KPs?,PE006,Sedimentary rocks ,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian ,"Triassic fossils were recovered from carbonaceous slate and limestone assigned to this map unit near Juneau (Ford and Brew, 1977; H.C. Berg, unpub. data, 1981), and similar strata (locally mapped as Triassic clastic sedimentary and carbonate rocks (Trsc)) on Revillagigedo Island yielded latest Middle Triassic fauna (Silberling and others, 1982). On Revillagigedo Island, phyllite and mategraywacke are locally in depositional contact with crinoidal marble of known Permian age (unit Pc) and are interbedded with crinoidal marble of probable Permian age (Berg and others, 1978, 1988; H.C. Berg, unpub. data, 1975). ",,Petersburg,Sedimentary
5011,,4900,KPsv,BC006,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.",Cretaceous to Permian,,,Bradfield Canal,Sedimentary
5011,,4900,KPsv,JU012,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.",Cretaceous to Permian,,,Juneau,Sedimentary
5011,,4900,KPsv,KC013,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous to Permian,,,Ketchikan,Sedimentary
5011,,4900,KPsv,PR003,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous to Permian,,,Prince Rupert,Sedimentary
5011,,4900,KPsv,SD016,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.",Cretaceous to Permian,,,Sumdum,Sedimentary
5011,,4900,KPsv,SI009,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.",Cretaceous to Permian,,,Sitka,Sedimentary
5011,,4900,KPsv,TR008,"Sedimentary and volcanic rocks, undivided ","Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks, and the regionally metamorphosed equivalents of these strata.",Cretaceous to Permian,,,Taku River,Sedimentary
5105,,4890,KPv,JU012,Volcanic rocks ,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian,"Graphitic slate assigned to unit contains Late Triassic fossils near Juneau (Brew and Grybeck, 1984, p.31), and marble intercalated with metavolcanic rocks contains Permian and Permian (?) fossils near Juneau, along coast southeast of Juneau, and in Endicott Arm (Buddington and Chapin, 1929, p.73, 119; Ford and Brew, 1973; Brew and Grybeck, 1984, p.30-31). ",,Juneau,Igneous
5105,,4890,KPv,KC013,Volcanic rocks ,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian,"Graphitic slate assigned to unit contains Late Triassic fossils near Juneau (Brew and Grybeck, 1984, p.31), and marble intercalated with metavolcanic rocks contains Permian and Permian (?) fossils near Juneau, along coast southeast of Juneau, and in Endicott Arm (Buddington and Chapin, 1929, p.73, 119; Ford and Brew, 1973; Brew and Grybeck, 1984, p.30-31). ",,Ketchikan,Igneous
5105,,4890,KPv,PE006,Volcanic rocks ,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian,"Graphitic slate assigned to unit contains Late Triassic fossils near Juneau (Brew and Grybeck, 1984, p.31), and marble intercalated with metavolcanic rocks contains Permian and Permian (?) fossils near Juneau, along coast southeast of Juneau, and in Endicott Arm (Buddington and Chapin, 1929, p.73, 119; Ford and Brew, 1973; Brew and Grybeck, 1984, p.30-31). ",,Petersburg,Igneous
5105,,4890,KPv,SD016,Volcanic rocks ,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian,"Graphitic slate assigned to unit contains Late Triassic fossils near Juneau (Brew and Grybeck, 1984, p.31), and marble intercalated with metavolcanic rocks contains Permian and Permian (?) fossils near Juneau, along coast southeast of Juneau, and in Endicott Arm (Buddington and Chapin, 1929, p.73, 119; Ford and Brew, 1973; Brew and Grybeck, 1984, p.30-31). ",,Sumdum,Igneous
5105,,4890,KPv,TR008,Volcanic rocks ,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents of these rocks.",Cretaceous to Permian,"Graphitic slate assigned to unit contains Late Triassic fossils near Juneau (Brew and Grybeck, 1984, p.31), and marble intercalated with metavolcanic rocks contains Permian and Permian (?) fossils near Juneau, along coast southeast of Juneau, and in Endicott Arm (Buddington and Chapin, 1929, p.73, 119; Ford and Brew, 1973; Brew and Grybeck, 1984, p.30-31). ",,Taku River,Igneous
5200,,4950,TrOsv,JU012,"Sedimentary and volcanic rocks, undivided","Clastic sedimentary rocks, subordinate mafic to felsic volcanic rocks, thin- to thick-bedded gray carbonate, chert, and minor ultramafic rocks that have been regionally metamorphosed to slate, phyllite, greenschist, schist, gneiss, and marble in many areas.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Triassic to Ordovician,Devonian fossils were recovered from marble in the Gambier Bay Formation,,Juneau,Sedimentary
5200,,4950,TrOsv,SD016,"Sedimentary and volcanic rocks, undivided","Clastic sedimentary rocks, subordinate mafic to felsic volcanic rocks, thin- to thick-bedded gray carbonate, chert, and minor ultramafic rocks that have been regionally metamorphosed to slate, phyllite, greenschist, schist, gneiss, and marble in many areas.",Triassic to Ordovician,Devonian fossils were recovered from marble in the Gambier Bay Formation,,Sumdum,Sedimentary
5200,,4950,TrOsv,SI009,"Sedimentary and volcanic rocks, undivided","Clastic sedimentary rocks, subordinate mafic to felsic volcanic rocks, thin- to thick-bedded gray carbonate, chert, and minor ultramafic rocks that have been regionally metamorphosed to slate, phyllite, greenschist, schist, gneiss, and marble in many areas.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Triassic to Ordovician,Devonian fossils were recovered from marble in the Gambier Bay Formation,,Sitka,Sedimentary
5200,,4950,TrOsv,SK015,"Sedimentary and volcanic rocks, undivided","CClastic sedimentary rocks, subordinate mafic to felsic volcanic rocks, thin- to thick-bedded gray carbonate, chert, and minor ultramafic rocks that have been regionally metamorphosed to slate, phyllite, greenschist, schist, gneiss, and marble in many areas.",Triassic to Ordovician,Devonian fossils were recovered from marble in the Gambier Bay Formation,,Skagway,Sedimentary
5260,,4940,TrPsv,JU012,"Sedimentary and volcanic rocks, undivided ","Andesitic to basaltic pillow flows, breccia, and tuff; felsic tuff; graywacke, mudstone, shale, chert, conglomerate, and carbonate; and the metamorphic equivalents of these strata.",Triassic and Permian ,,,Juneau,Sedimentary
5260,,4940,TrPsv,SI009,"Sedimentary and volcanic rocks, undivided ","Andesitic to basaltic pillow flows, breccia, and tuff; felsic tuff; graywacke, mudstone, shale, chert, conglomerate, and carbonate; and the metamorphic equivalents of these strata.",Triassic and Permian ,,,Sitka,Sedimentary
5270,,4920,JMsv,BC006,"Sedimentary and volcanic rocks, undivided ",Diverse assemblage of sedimentary and volcanic rocks and their metamorphic equivalents.,Jurassic to Mississippian ,,,Bradfield Canal,Metamorphic
5270,,4920,JMsv,KC013,"Sedimentary and volcanic rocks, undivided ",Diverse assemblage of sedimentary and volcanic rocks and their metamorphic equivalents.,Jurassic to Mississippian ,,,Ketchikan,Metamorphic
5270,,4920,JMsv,TR008,"Sedimentary and volcanic rocks, undivided ",Diverse assemblage of sedimentary and volcanic rocks and their metamorphic equivalents.,Jurassic to Mississippian ,,,Taku River,Metamorphic
5271,,4910,KPsvc,MF011,"Clastic sedimentary, volcanic, and carbonate rocks ","Unnamed fossiliferous argillite of Cretaceous age; variably metamorphosed chert, tuffaceous sandstone, felsic tuff, argillite, and light-gray, thin-bedded limestone of Mesozoic or Paleozoic age; highly sheared metasedimentary, metavolcanic, and granodioritic rocks; amphibolite, gneiss, schist, and marble.",Cretaceous to Permian ,Unnamed fossiliferous argillite of Cretaceous age,,Mount Fairweather,Metamorphic
5271,,4910,KPsvc,SI009,"Clastic sedimentary, volcanic, and carbonate rocks ","Unnamed fossiliferous argillite of Cretaceous age; variably metamorphosed chert, tuffaceous sandstone, felsic tuff, argillite, and light-gray, thin-bedded limestone of Mesozoic or Paleozoic age; highly sheared metasedimentary, metavolcanic, and granodioritic rocks; amphibolite, gneiss, schist, and marble.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Cretaceous to Permian ,Unnamed fossiliferous argillite of Cretaceous age,,Sitka,Metamorphic
5765,,4700,Pc,JU012,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Juneau,Sedimentary
5765,,4700,Pc,KC013,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Ketchikan,Metamorphic
5765,,4700,Pc,MF011,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Mount Fairweather,Metamorphic
5765,,4700,Pc,PA006,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Port Alexander,Metamorphic
5765,,4700,Pc,PE006,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Petersburg,Metamorphic
5765,,4700,Pc,SD016,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Sumdum,Metamorphic
5765,,4700,Pc,SI009,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Sitka,Metamorphic
5765,,4700,Pc,SK015,Carbonate rocks ,"Greenschist-facies, massive to thin-bedded marble; medium-bedded dolomite, limestone, and subordinate gray chert beds and nodules; and unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate.",Permian ,"Unnamed fossiliferous gray limestone, cherty limestone, and limestone conglomerate of Permian age northeast of Glacier Bay (Brew and others, 1978) and along west shore of Lynn Canal (Lathram and others, 1959; Brew and Ford, 1985).",,Skagway,Metamorphic
5766,,4680,Ps,JU012,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Juneau,Sedimentary
5766,,4680,Ps,MF011,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Mount Fairweather,Sedimentary
5766,,4680,Ps,PA006,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Port Alexander,Sedimentary
5766,,4680,Ps,SD016,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Sumdum,Sedimentary
5766,,4680,Ps,SI009,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Sitka,Sedimentary
5766,,4680,Ps,SK015,Sedimentary rocks ,"Black argillite, graywacke, calcareous siltstone, chert, and minor basaltic rocks, limestone, and conglomerate.",Permian ,,,Skagway,Sedimentary
5810,,4690,Pv,JU012,Volcanic rocks,"Lower Permian basalt (part of the Halleck Formation) on northern Kuiu Island (Muffler, 1967) and unnamed Permian basaltic (?) rocks northeast of Glacier Bay (Brew and others, 1978).",Permian,,,Juneau,Igneous
5810,,4690,Pv,PA006,Volcanic rocks,"Lower Permian basalt (part of the Halleck Formation) on northern Kuiu Island (Muffler, 1967) and unnamed Permian basaltic (?) rocks northeast of Glacier Bay (Brew and others, 1978).",Permian,,,Port Alexander,Igneous
5810,,4690,Pv,SK015,Volcanic rocks,"Lower Permian basalt (part of the Halleck Formation) on northern Kuiu Island (Muffler, 1967) and unnamed Permian basaltic (?) rocks northeast of Glacier Bay (Brew and others, 1978).",Permian,,,Skagway,Igneous
5875,,5350,PPasy,CR012,Syenite,Syenite on Sukkwan Island that contains biotite +/- amphibole +/- aegerine +/- augite.,Permian and (or) Pennsylvanian,,"Yielded potassium-argon apparent ages of Early Permian (hornblende) and Late Pennsylvanian (biotite) (Eberlein and others, 1983)",Craig,Igneous
5930,,4740,MDsv,PE006,"Sedimentary and volcanic rocks, undivided ","Tuffaceous argillite and graywacke and subordinate chert, limestone, and andesitic volcanic rocks.",Mississippian and Devonian ,"Fossils are Late Devonian and Early and Late Mississippian in age (Jones and others, 1981). ",,Petersburg,Sedimentary
5930,,4740,MDsv,SD016,"Sedimentary and volcanic rocks, undivided ","Tuffaceous argillite and graywacke and subordinate chert, limestone, and andesitic volcanic rocks.",Mississippian and Devonian ,"Fossils are Late Devonian and Early and Late Mississippian in age (Jones and others, 1981). ",,Sumdum,Sedimentary
5930,,4740,MDsv,SI009,"Sedimentary and volcanic rocks, undivided ","Tuffaceous argillite and graywacke and subordinate chert, limestone, and andesitic volcanic rocks.",Mississippian and Devonian ,"Fossils are Late Devonian and Early and Late Mississippian in age (Jones and others, 1981). ",,Sitka,Sedimentary
6030,,4720,Pac,CR012,Carbonate rocks ,"Massive limestone and minor dolomite containing light-gray chert nodules, and unnamed, medium-bedded to massive crinoidal limestone.",Pennsylvanian ,"Unnamed, medium-bedded to massive crinoidal limestone on northern Kuiu Island (Brew and others, 1984).",,Craig,Sedimentary
6030,,4720,Pac,PA006,Carbonate rocks ,"Massive limestone and minor dolomite containing light-gray chert nodules, and unnamed, medium-bedded to massive crinoidal limestone.",Pennsylvanian ,"Unnamed, medium-bedded to massive crinoidal limestone on northern Kuiu Island (Brew and others, 1984).",,Port Alexander,Sedimentary
6031,,4710,Pas,CR012,Sedimentary rocks ,Middle and Lower Pennsylvanian sandstone and siltstone containing minor limestone and chert-pebble conglomerate (Klawak Formation).,Pennsylvanian,,,Craig,Sedimentary
6095,,4970,PaDsv,PA006,"Sedimentary and volcanic rocks, undivided ","Saginaw Bay Formation on Kuiu Island. From youngest to oldest, unit consists of silty limestone, calcareous chert and limestone, black chert, and massive aquagene tuff and pillow breccia (Muffler, 1967).",Pennsylvanian to Devonian ,"Volcanic rocks yielded earliest Late to latest Early Devonian conodonts (Dutro and others, 1981; Brew and others, 1984).    ",,Port Alexander,Sedimentary
6095,,4970,PaDsv,PE006,"Sedimentary and volcanic rocks, undivided ","Saginaw Bay Formation on Kuiu Island. From youngest to oldest, unit consists of silty limestone, calcareous chert and limestone, black chert, and massive aquagene tuff and pillow breccia (Muffler, 1967).",Pennsylvanian to Devonian ,"Volcanic rocks yielded earliest Late to latest Early Devonian conodonts (Dutro and others, 1981; Brew and others, 1984).    ",,Petersburg,Sedimentary
6340,,4730,Mc,CR012,Carbonate rocks ,"Thin- to thick-bedded, dark-gray limestone, subordinate beds and nodules of light-gray chert, and minor shale and gypsum.",Mississippian,,,Craig,Sedimentary
6340,,4730,Mc,JU012,Carbonate rocks ,"Thin- to thick-bedded, dark-gray limestone, subordinate beds and nodules of light-gray chert, and minor shale and gypsum.",Mississippian,,,Juneau,Sedimentary
6340,,4730,Mc,SI009,Carbonate rocks ,"Thin- to thick-bedded, dark-gray limestone, subordinate beds and nodules of light-gray chert, and minor shale and gypsum.",Mississippian,,,Sitka,Sedimentary
6616,,5000,DOc,JU012,Carbonate rocks ,"Carbonate rocks that were metamorphosed to thin- to thick-bedded, dark-gray to white marble.",Devonian to Ordovician ,,,Juneau,Metamorphic
6616,,5000,DOc,MF011,Carbonate rocks ,"Carbonate rocks that were metamorphosed to thin- to thick-bedded, dark-gray to white marble.",Devonian to Ordovician ,,,Mount Fairweather,Metamorphic
6616,,5000,DOc,SI009,Carbonate rocks ,"Carbonate rocks that were metamorphosed to thin- to thick-bedded, dark-gray to white marble.",Devonian to Ordovician ,,,Sitka,Metamorphic
6616,,5000,DOc,SK015,Carbonate rocks ,"Carbonate rocks that were metamorphosed to thin- to thick-bedded, dark-gray to white marble.",Devonian to Ordovician ,,,Skagway,Metamorphic
6617,,4960,TrOc,SI009,Carbonate rocks ,Carbonate rocks regionally metamorphosed to gray marble.,Triassic to Ordovician,"Fossils of Pennsylvanian (?) or Permian (?), Paleozoic (?), and Devonian (?) or Silurian (?) age were recovered from unit west of Haines (MacKevett and others, 1974) and fossils of probable Mississippian age were recovered from marble in associated Triassic to Ordovician strata (unit TrOsv) (Redman and others, 1985).",,Sitka,Sedimentary
6617,,4960,TrOc,SK015,Carbonate rocks ,Carbonate rocks regionally metamorphosed to gray marble.,Triassic to Ordovician,"Fossils of Pennsylvanian (?) or Permian (?), Paleozoic (?), and Devonian (?) or Silurian (?) age were recovered from unit west of Haines (MacKevett and others, 1974) and fossils of probable Mississippian age were recovered from marble in associated Triassic to Ordovician strata (unit TrOsv) (Redman and others, 1985).",,Skagway,Sedimentary
6618,,4810,Scg ,CR012,Conglomeratic rocks ,"Polymictic pebble and cobble conglomerate and subordinate sedimentary breccia, olistostromal deposits, sandstone, graywacke, mudstone, and limestone. Clasts consist of porphyritic andesite, limestone, graywacke, mudstone, granitic to gabbroic intrusive rocks, chert, and other rocks derived from various pre-Devonian units.",Silurian ,,,Craig,Sedimentary
6618,,4810,Scg ,PA006,Conglomeratic rocks ,"Polymictic pebble and cobble conglomerate and subordinate sedimentary breccia, olistostromal deposits, sandstone, graywacke, mudstone, and limestone. Clasts consist of porphyritic andesite, limestone, graywacke, mudstone, granitic to gabbroic intrusive rocks, chert, and other rocks derived from various pre-Devonian units.",Silurian ,,,Port Alexander,Sedimentary
6618,,4810,Scg ,PE006,Conglomeratic rocks ,"Polymictic pebble and cobble conglomerate and subordinate sedimentary breccia, olistostromal deposits, sandstone, graywacke, mudstone, and limestone. Clasts consist of porphyritic andesite, limestone, graywacke, mudstone, granitic to gabbroic intrusive rocks, chert, and other rocks derived from various pre-Devonian units.",Silurian ,,,Petersburg,Sedimentary
6618,,4810,Scg ,SI009,Conglomeratic rocks ,"Polymictic pebble and cobble conglomerate and subordinate sedimentary breccia, olistostromal deposits, sandstone, graywacke, mudstone, and limestone. Clasts consist of porphyritic andesite, limestone, graywacke, mudstone, granitic to gabbroic intrusive rocks, chert, and other rocks derived from various pre-Devonian units.",Silurian ,,,Sitka,Sedimentary
6619,,4820,Ss,CR012,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Craig,Sedimentary
6619,,4820,Ss,JU012,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Juneau,Sedimentary
6619,,4820,Ss,MF011,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Mount Fairweather,Sedimentary
6619,,4820,Ss,PA006,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Port Alexander,Sedimentary
6619,,4820,Ss,PE006,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Petersburg,Sedimentary
6619,,4820,Ss,SI009,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Sitka,Sedimentary
6619,,4820,Ss,SK015,Sedimentary rocks ,"Graywacke and mudstone turbidites and subordinate olistostromal deposits, layers, and lenses of limestone, and conglomerate.",Silurian ,,,Skagway,Sedimentary
6689,,4860,SOsv,CR012,"Sedimentary and volcanic rocks, undivided ","Mudstone and graywacke turbidites, basaltic and andesitic volcanic rocks, and metamorphic equivalents of these strata. ",Silurian and Ordovician ,,,Craig,Sedimentary
6689,,4860,SOsv,KC013,"Sedimentary and volcanic rocks, undivided ","Mudstone and graywacke turbidites, basaltic and andesitic volcanic rocks, and metamorphic equivalents of these strata. ",Silurian and Ordovician ,,,Ketchikan,Sedimentary
6689,,4860,SOsv,PE006,"Sedimentary and volcanic rocks, undivided ","Mudstone and graywacke turbidites, basaltic and andesitic volcanic rocks, and metamorphic equivalents of these strata. ",Silurian and Ordovician ,,,Petersburg,Sedimentary
6689,,4860,SOsv,PR003,"Sedimentary and volcanic rocks, undivided ","Mudstone and graywacke turbidites, basaltic and andesitic volcanic rocks, and metamorphic equivalents of these strata. ",Silurian and Ordovician ,,,Prince Rupert,Sedimentary
6689,Q,4861,SOsv?,CR012,"Sedimentary and volcanic rocks, undivided ","Mudstone and graywacke turbidites, basaltic and andesitic volcanic rocks, and metamorphic equivalents of these strata. ",Silurian and Ordovician ,,,Craig,Sedimentary
6690,,4840,SOs,CR012,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Craig,Sedimentary
6690,,4840,SOs,KC013,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Ketchikan,Sedimentary
6690,,4840,SOs,PE006,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Petersburg,Sedimentary
6690,,4840,SOs,PR003,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Prince Rupert,Sedimentary
6690,,4840,SOs,SI009,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Sitka,Sedimentary
6690,,4841,SOs?,DE008,Sedimentary rocks ,"Mudstone and graywacke turbidites, subordinate conglomerate, sandstone, and shale, and minor limestone, chert, and basalt flows and breccia.",Silurian and Ordovician,,,Dixon Entrance,Sedimentary
6712,,4850,SOv,CR012,Volcanic rocks ,"Basaltic pillow flows, pillow breccia, and aquagene tuff; massive andesite pyroclastic breccia; felsic breccia and tuff; subordinate interbeds of mudstone and graywacke turbidites and metamorphic equivalents of these strata.",Silurian and Ordovician ,,,Craig,Igneous
6712,,4850,SOv,DE008,Volcanic rocks ,"Basaltic pillow flows, pillow breccia, and aquagene tuff; massive andesite pyroclastic breccia; felsic breccia and tuff; subordinate interbeds of mudstone and graywacke turbidites and metamorphic equivalents of these strata.",Silurian and Ordovician ,,,Dixon Entrance,Igneous
6712,,4850,SOv,PR003,Volcanic rocks ,"Basaltic pillow flows, pillow breccia, and aquagene tuff; massive andesite pyroclastic breccia; felsic breccia and tuff; subordinate interbeds of mudstone and graywacke turbidites and metamorphic equivalents of these strata.",Silurian and Ordovician ,,,Prince Rupert,Igneous
6730,,5360,Sst,DE008,Syenite and trondhjemite ,Leucocratic biotite +/- aegerine +/- arfvedsonite +/- garnet syenite and subordinate leucodiorite; biotite and hornblende trondhjemite); and undivided biotite and (or) hornblende syenite and trondhjemite.,Silurian ,,"Silurian age indicated by a minimum potassium-argon apparent age on Chichagof Island (Lanphere and others, 1965) and by uranium-lead (zircon) apparent ages of rocks from Annette, Gravina, and Prince of Wales Islands and mainland to southeast (Gehrels and Saleeby, 1987a, b; Gehrels and others, 1987). ",Dixon Entrance,Igneous
6730,,5360,Sst,KC013,Syenite and trondhjemite ,Leucocratic biotite +/- aegerine +/- arfvedsonite +/- garnet syenite and subordinate leucodiorite; biotite and hornblende trondhjemite); and undivided biotite and (or) hornblende syenite and trondhjemite.,Silurian ,,"Silurian age indicated by a minimum potassium-argon apparent age on Chichagof Island (Lanphere and others, 1965) and by uranium-lead (zircon) apparent ages of rocks from Annette, Gravina, and Prince of Wales Islands and mainland to southeast (Gehrels and Saleeby, 1987a, b; Gehrels and others, 1987). ",Ketchikan,Igneous
6730,,5360,Sst,PR003,Syenite and trondhjemite ,Leucocratic biotite +/- aegerine +/- arfvedsonite +/- garnet syenite and subordinate leucodiorite; biotite and hornblende trondhjemite); and undivided biotite and (or) hornblende syenite and trondhjemite.,Silurian ,,"Silurian age indicated by a minimum potassium-argon apparent age on Chichagof Island (Lanphere and others, 1965) and by uranium-lead (zircon) apparent ages of rocks from Annette, Gravina, and Prince of Wales Islands and mainland to southeast (Gehrels and Saleeby, 1987a, b; Gehrels and others, 1987). ",Prince Rupert,Igneous
6730,,5360,Sst,SI009,Syenite and trondhjemite ,Leucocratic biotite +/- aegerine +/- arfvedsonite +/- garnet syenite and subordinate leucodiorite; biotite and hornblende trondhjemite); and undivided biotite and (or) hornblende syenite and trondhjemite.,Silurian ,,"Silurian age indicated by a minimum potassium-argon apparent age on Chichagof Island (Lanphere and others, 1965) and by uranium-lead (zircon) apparent ages of rocks from Annette, Gravina, and Prince of Wales Islands and mainland to southeast (Gehrels and Saleeby, 1987a, b; Gehrels and others, 1987). ",Sitka,Igneous
6740,,4830,Sv,PA006,Volcanic rocks ,"Mafic to intermediate volcanic breccia, agglomerate, and flows and greenschist and greenstone derived from these rocks.",Silurian ,,,Port Alexander,Igneous
6740,,4830,Sv,PE006,Volcanic rocks ,"Mafic to intermediate volcanic breccia, agglomerate, and flows and greenschist and greenstone derived from these rocks.",Silurian ,,,Petersburg,Igneous
6750,,5370,SOum,CR012,Ultramafic rocks,"Pyroxenite, hornblendite, and related ultramafic rocks.",Silurian Ordovician,,"The intrusive body on Dall Island yielded a Late Ordovician potassium-argon (hornblende) apparent age (M.A. Lanphere, written commun., 1984). An Early Silurian potassium-argon (biotite) apparent age has been determined on the body on east-central Prince of Wales Island (Loney and others, 1987). ",Craig,Igneous
6750,,5370,SOum,DE008,Ultramafic rocks,"Pyroxenite, hornblendite, and related ultramafic rocks.",Silurian Ordovician,,"The intrusive body on Dall Island yielded a Late Ordovician potassium-argon (hornblende) apparent age (M.A. Lanphere, written commun., 1984). An Early Silurian potassium-argon (biotite) apparent age has been determined on the body on east-central Prince of Wales Island (Loney and others, 1987). ",Dixon Entrance,Igneous
6800,,4870,SOsvc,DE008,"Clastic sedimentary, volcanic, and carbonate rocks, undivided ","Interbedded graywacke, mudstone, mafic to felsic volcanic rocks, and limestone that have been regionally metamorphosed as high as greenschist facies (Gehrels and Saleeby, 1987b; G.E. Gehrels, unpub. data, 1984). ",Silurian and Ordovician ,,,Dixon Entrance,Metamorphic
6928,,4770,Dsv,CR012,"Sedimentary and volcanic rocks, undivided ","Siltstone, shale, volcanogenic graywacke, conglomerate, and minor limestone that are interbedded with basaltic pillow flows, breccia, and aquagene tuff. Unit consist of the Coronados Volcanics (Devonian), the Devonian (?) St. Joseph Island Volcanics, and part of the Upper Devonian Port Refugio Formation, all of which are found on western Prince of Wales Island and adjacent islands (Eberlein and others, 1983).",Devonian ,,,Craig,Sedimentary
6928,,4770,Dsv,MF011,"Sedimentary and volcanic rocks, undivided ","Siltstone, shale, volcanogenic graywacke, conglomerate, and minor limestone that are interbedded with basaltic pillow flows, breccia, and aquagene tuff. Unit consist of the Coronados Volcanics (Devonian), the Devonian (?) St. Joseph Island Volcanics, and part of the Upper Devonian Port Refugio Formation, all of which are found on western Prince of Wales Island and adjacent islands (Eberlein and others, 1983).",Devonian ,,,Mount Fairweather,Sedimentary
6928,,4770,Dsv,PA006,"Sedimentary and volcanic rocks, undivided ","Siltstone, shale, volcanogenic graywacke, conglomerate, and minor limestone that are interbedded with basaltic pillow flows, breccia, and aquagene tuff. Unit consist of the Coronados Volcanics (Devonian), the Devonian (?) St. Joseph Island Volcanics, and part of the Upper Devonian Port Refugio Formation, all of which are found on western Prince of Wales Island and adjacent islands (Eberlein and others, 1983).",Devonian ,,,Port Alexander,Sedimentary
6928,,4770,Dsv,PE006,"Sedimentary and volcanic rocks, undivided ","Siltstone, shale, volcanogenic graywacke, conglomerate, and minor limestone that are interbedded with basaltic pillow flows, breccia, and aquagene tuff. Unit consist of the Coronados Volcanics (Devonian), the Devonian (?) St. Joseph Island Volcanics, and part of the Upper Devonian Port Refugio Formation, all of which are found on western Prince of Wales Island and adjacent islands (Eberlein and others, 1983).",Devonian ,,,Petersburg,Sedimentary
6928,Q,4771,Dsv?,CR012,"Sedimentary and volcanic rocks, undivided ","Siltstone, shale, volcanogenic graywacke, conglomerate, and minor limestone that are interbedded with basaltic pillow flows, breccia, and aquagene tuff. Unit consist of the Coronados Volcanics (Devonian), the Devonian (?) St. Joseph Island Volcanics, and part of the Upper Devonian Port Refugio Formation, all of which are found on western Prince of Wales Island and adjacent islands (Eberlein and others, 1983).",Devonian ,,,Craig,Sedimentary
6932,,5010,DSc,JU012,Carbonate rocks ,"Thin, discontinuous, unfossiliferous limestone layers associated with Devonian and Silurian volcanic rocks (DSv) in the Chilkat Range (Lathram and others, 1959; Brew and Ford, 1985)",Devonian and Silurian ,,,Juneau,Sedimentary
6937,,4790,Dcg,CR012,Conglomeratic rocks ,"Conglomerate and sedimentary breccia interbedded with sandstone, siltstone, shale, and minor graywacke, limestone, and volcanic rocks. Sedimentary structures and presence of red beds and thick sections of coarse conglomerate suggest that strata in Prince of Wales Island region were deposited in subaerial to shallow-water marine environments (Ovenshine, 1975; Gehrels and Saleeby, 1987a). ",Devonian ,,,Craig,Sedimentary
6937,,4790,Dcg,DE008,Conglomeratic rocks ,"Conglomerate and sedimentary breccia interbedded with sandstone, siltstone, shale, and minor graywacke, limestone, and volcanic rocks. Sedimentary structures and presence of red beds and thick sections of coarse conglomerate suggest that strata in Prince of Wales Island region were deposited in subaerial to shallow-water marine environments (Ovenshine, 1975; Gehrels and Saleeby, 1987a). ",Devonian ,,,Dixon Entrance,Sedimentary
6937,,4790,Dcg,JU012,Conglomeratic rocks ,"Conglomerate and sedimentary breccia interbedded with sandstone, siltstone, shale, and minor graywacke, limestone, and volcanic rocks. Sedimentary structures and presence of red beds and thick sections of coarse conglomerate suggest that strata in Prince of Wales Island region were deposited in subaerial to shallow-water marine environments (Ovenshine, 1975; Gehrels and Saleeby, 1987a). ",Devonian ,,,Juneau,Sedimentary
6938,,4780,Dc,CR012,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Craig,Sedimentary
6938,,4780,Dc,JU012,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Juneau,Sedimentary
6938,,4780,Dc,MF011,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Mount Fairweather,Sedimentary
6938,,4780,Dc,PE006,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Petersburg,Sedimentary
6938,,4780,Dc,SD016,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Sumdum,Sedimentary
6938,,4780,Dc,SK015,Carbonate rocks,"Thin-bedded to massive, gray limestone and minor shale interbeds.",Devonian ,,,Skagway,Sedimentary
6939,,4750,Ds,CR012,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Craig,Sedimentary
6939,,4750,Ds,DE008,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Dixon Entrance,Sedimentary
6939,,4750,Ds,JU012,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Juneau,Sedimentary
6939,,4750,Ds,KC013,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Ketchikan,Sedimentary
6939,,4750,Ds,PA006,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Port Alexander,Sedimentary
6939,,4750,Ds,PE006,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Petersburg,Sedimentary
6939,,4750,Ds,PR003,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Prince Rupert,Sedimentary
6939,,4750,Ds,SI009,Sedimentary rocks ,"Siltstone, shale, sandstone, graywacke, and subordinate limestone breccia, arkose, conglomerate, and volcanic rocks.",Devonian,,,Sitka,Sedimentary
6953,,5020,DSsc,CR012,Sedimentary rocks ,"Limestone, sandstone, calcareous mudstone, and polymictic conglomerate.",Devonian and Silurian ,,,Craig,Sedimentary
6953,,5020,DSsc,JU012,Sedimentary rocks ,"Limestone, sandstone, calcareous mudstone, and polymictic conglomerate.",Devonian and Silurian ,,,Juneau,Sedimentary
6953,,5020,DSsc,MF011,Sedimentary rocks ,"Limestone, sandstone, calcareous mudstone, and polymictic conglomerate.",Devonian and Silurian ,,,Mount Fairweather,Sedimentary
6953,,5020,DSsc,PE006,Sedimentary rocks ,"Limestone, sandstone, calcareous mudstone, and polymictic conglomerate.",Devonian and Silurian ,,,Petersburg,Sedimentary
6953,,5020,DSsc,SK015,Sedimentary rocks ,"Limestone, sandstone, calcareous mudstone, and polymictic conglomerate.",Devonian and Silurian ,,,Skagway,Sedimentary
6960,,4800,Sc,CR012,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Craig,Sedimentary
6960,,4800,Sc,DE008,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Dixon Entrance,Sedimentary
6960,,4800,Sc,JU012,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Juneau,Sedimentary
6960,,4800,Sc,MF011,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Mount Fairweather,Sedimentary
6960,,4800,Sc,PA006,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Port Alexander,Sedimentary
6960,,4800,Sc,PE006,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Petersburg,Sedimentary
6960,,4800,Sc,SI009,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Sitka,Sedimentary
6960,,4800,Sc,SK015,Carbonate rocks ,"Massive, thin- to thick-bedded, locally reefoidal, light-gray limestone and subordinate shale and polymictic conglomerate.",Silurian ,Loney and others (1975) report that limestone in the Chilkat Range is lithically similar to the Kennel Creek Limestone and contains similar fossils.,,Skagway,Sedimentary
7020,,4980,DSv,JU012,Volcanic rocks ,"Volcanic rocks found in a fault slice on northern Kuiu Island, basaltic and (or) andesitic rocks in Glacier Bay; and unnamed basalt and andesite in the Chilkat Range.",Devonian and Silurian ,,,Juneau,Igneous
7020,,4980,DSv,PE006,Volcanic rocks ,"Volcanic rocks found in a fault slice on northern Kuiu Island, basaltic and (or) andesitic rocks in Glacier Bay; and unnamed basalt and andesite in the Chilkat Range.",Devonian and Silurian ,,,Petersburg,Igneous
7020,,4980,DSv,SK015,Volcanic rocks ,"Volcanic rocks found in a fault slice on northern Kuiu Island, basaltic and (or) andesitic rocks in Glacier Bay; and unnamed basalt and andesite in the Chilkat Range.",Devonian and Silurian ,,,Skagway,Igneous
7020,Q,4981,DSv?,SK015,Volcanic rocks ,"Volcanic rocks found in a fault slice on northern Kuiu Island, basaltic and (or) andesitic rocks in Glacier Bay; and unnamed basalt and andesite in the Chilkat Range.",Devonian and Silurian ,,,Skagway,Igneous
7030,,4760,Dv,CR012,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Craig,Igneous
7030,,4760,Dv,JU012,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Juneau,Igneous
7030,,4760,Dv,MF011,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Mount Fairweather,Igneous
7030,,4760,Dv,PR003,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Prince Rupert,Igneous
7030,,4760,Dv,SI009,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Sitka,Igneous
7030,Q,4761,Dv?,MF011,Volcanic rocks ,"Basaltic and subordinate andesitic pillow flows, breccia, aquagene tuff, and minor sedimentary interbeds.",Devonian ,,,Mount Fairweather,Igneous
7200,,4990,DOsv,JU012,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.",Devonian to Ordovician ,,,Juneau,Sedimentary
7200,,4990,DOsv,MF011,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Devonian to Ordovician ,,,Mount Fairweather,Sedimentary
7200,,4990,DOsv,SI009,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",Devonian to Ordovician ,,,Sitka,Sedimentary
7200,,4990,DOsv,SK015,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.",Devonian to Ordovician ,,,Skagway,Sedimentary
7200,Q,4991,DOsv?,JU012,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.",Devonian to Ordovician ,,,Juneau,Sedimentary
7200,Q,4991,DOsv?,SK015,"Sedimentary and volcanic rocks, undivided ","Graywacke, mudstone, shale, limestone, and subordinate mafic to intermediate volcanic rocks that have been metamorphosed in most areas to hornfels, slate, phyllite, schist, amphibolite, marble, gneiss, and granofels.",Devonian to Ordovician ,,,Skagway,Sedimentary
7650,,5380,SOq,CR012,Quartz diorite ,"Late and Middle Ordovician diorite and quartz diorite and Early Silurian to Late Ordovician biotite quartz monzonite; Early Silurian to Late Ordovician diorite, quartz diorite, and their metamorphosed and deformed equivalents; and layered and foliated quartz diorite and diorite.",Silurian and Ordovician ,,,Craig,Igneous
7650,,5380,SOq,DE008,Quartz diorite ,"Late and Middle Ordovician diorite and quartz diorite and Early Silurian to Late Ordovician biotite quartz monzonite; Early Silurian to Late Ordovician diorite, quartz diorite, and their metamorphosed and deformed equivalents; and layered and foliated quartz diorite and diorite.",Silurian and Ordovician ,,,Dixon Entrance,Igneous
7650,,5380,SOq,KC013,Quartz diorite ,"Late and Middle Ordovician diorite and quartz diorite and Early Silurian to Late Ordovician biotite quartz monzonite; Early Silurian to Late Ordovician diorite, quartz diorite, and their metamorphosed and deformed equivalents; and layered and foliated quartz diorite and diorite.",Silurian and Ordovician ,,,Ketchikan,Igneous
7650,,5380,SOq,PR003,Quartz diorite ,"Late and Middle Ordovician diorite and quartz diorite and Early Silurian to Late Ordovician biotite quartz monzonite; Early Silurian to Late Ordovician diorite, quartz diorite, and their metamorphosed and deformed equivalents; and layered and foliated quartz diorite and diorite.",Silurian and Ordovician ,,,Prince Rupert,Igneous
7650,Q,5381,SOq?,KC013,Quartz diorite ,"Late and Middle Ordovician diorite and quartz diorite and Early Silurian to Late Ordovician biotite quartz monzonite; Early Silurian to Late Ordovician diorite, quartz diorite, and their metamorphosed and deformed equivalents; and layered and foliated quartz diorite and diorite.",Silurian and Ordovician ,,,Ketchikan,Igneous
7670,,5390,Ogb,CR012,Gabbro,"Hornblende gabbro, and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island, and metagabbro on southern Dall Island.",Ordovician ,,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island that yielded a Middle Ordovician potassium-argon apparent age (Eberlein and others, 1983). ",Craig,Igneous
7670,,5390,Ogb,DE008,Gabbro,"Hornblende gabbro, and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island, and metagabbro on southern Dall Island.",Ordovician ,,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island that yielded a Middle Ordovician potassium-argon apparent age (Eberlein and others, 1983). ",Dixon Entrance,Igneous
7670,,5390,Ogb,KC013,Gabbro,"Hornblende gabbro, and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island, and metagabbro on southern Dall Island.",Ordovician ,,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island that yielded a Middle Ordovician potassium-argon apparent age (Eberlein and others, 1983). ",Ketchikan,Igneous
7670,,5390,Ogb,PR003,Gabbro,"Hornblende gabbro, and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island, and metagabbro on southern Dall Island.",Ordovician ,,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island that yielded a Middle Ordovician potassium-argon apparent age (Eberlein and others, 1983). ",Prince Rupert,Igneous
7670,Q,5391,Ogb?,PR003,Gabbro,"Hornblende gabbro, and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island, and metagabbro on southern Dall Island.",Ordovician ,,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite on Sukkwan Island that yielded a Middle Ordovician potassium-argon apparent age (Eberlein and others, 1983). ",Prince Rupert,Igneous
8500,,5400,Cdg,CR012,Diorite and granodiorite ,Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite.,Cambrian ,,"Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite on east-central Prince of Wales Island and on southern Gravina Island that yielded Late and Middle Cambrian preliminary uranium-lead (zircon) apparent ages (Gehrels and Saleeby, 1987b; Gehrels and others, 1987), and foliated and layered leucogranodiorite on southern Dall Island that has yielded an Early Cambrian uranium-lead (zircon) apparent age (G.E. Gehrels, unpub. data, 1984, Gehrels, 1984, 1987; Gehrels and Saleeby, 1987b).  ",Craig,Igneous
8500,,5400,Cdg,DE008,Diorite and granodiorite ,Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite.,Cambrian ,,"Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite on east-central Prince of Wales Island and on southern Gravina Island that yielded Late and Middle Cambrian preliminary uranium-lead (zircon) apparent ages (Gehrels and Saleeby, 1987b; Gehrels and others, 1987), and foliated and layered leucogranodiorite on southern Dall Island that has yielded an Early Cambrian uranium-lead (zircon) apparent age (G.E. Gehrels, unpub. data, 1984, Gehrels, 1984, 1987; Gehrels and Saleeby, 1987b).  ",Dixon Entrance,Igneous
8500,,5400,Cdg,KC013,Diorite and granodiorite ,Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite.,Cambrian ,,"Foliated and metamorphosed hornblende diorite and biotite +/- hornblende granodiorite on east-central Prince of Wales Island and on southern Gravina Island that yielded Late and Middle Cambrian preliminary uranium-lead (zircon) apparent ages (Gehrels and Saleeby, 1987b; Gehrels and others, 1987), and foliated and layered leucogranodiorite on southern Dall Island that has yielded an Early Cambrian uranium-lead (zircon) apparent age (G.E. Gehrels, unpub. data, 1984, Gehrels, 1984, 1987; Gehrels and Saleeby, 1987b).  ",Ketchikan,Igneous
8751,,5130,pOmsv,CR012,Metasedimentary and metavolcanic rocks ,"Metasedimentary and metavolcanic rocks derived from pre-Ordovician basaltic to andesitic pillow flows, pillow breccia, and tuff breccia, volcanoclastic graywacke and mudstone, and minor limestone and felsic volcanic breccia and tuff during regional greenschist- and local amphibolite-facies metamorphism. Common rock types include greenschist, greenstone, quartz-white mica schist, and marble.",pre-Ordovician ,,"Radiometric age constraints suggest that metamorphism occured during Early Ordovician to Middle Cambrian time (Turner and others, 1977; Gehrels and Saleeby, 1987a, b; M.A. Lanphere, oral commun., 1984). ",Craig,Metamorphic
8751,,5130,pOmsv,DE008,Metasedimentary and metavolcanic rocks ,"Metasedimentary and metavolcanic rocks derived from pre-Ordovician basaltic to andesitic pillow flows, pillow breccia, and tuff breccia, volcanoclastic graywacke and mudstone, and minor limestone and felsic volcanic breccia and tuff during regional greenschist- and local amphibolite-facies metamorphism. Common rock types include greenschist, greenstone, quartz-white mica schist, and marble.",pre-Ordovician ,,"Radiometric age constraints suggest that metamorphism occured during Early Ordovician to Middle Cambrian time (Turner and others, 1977; Gehrels and Saleeby, 1987a, b; M.A. Lanphere, oral commun., 1984). ",Dixon Entrance,Metamorphic
8751,,5130,pOmsv,KC013,Metasedimentary and metavolcanic rocks ,"Metasedimentary and metavolcanic rocks derived from pre-Ordovician basaltic to andesitic pillow flows, pillow breccia, and tuff breccia, volcanoclastic graywacke and mudstone, and minor limestone and felsic volcanic breccia and tuff during regional greenschist- and local amphibolite-facies metamorphism. Common rock types include greenschist, greenstone, quartz-white mica schist, and marble.",pre-Ordovician ,,"Radiometric age constraints suggest that metamorphism occured during Early Ordovician to Middle Cambrian time (Turner and others, 1977; Gehrels and Saleeby, 1987a, b; M.A. Lanphere, oral commun., 1984). ",Ketchikan,Metamorphic
8752,,5140,pOmc,CR012,Metacarbonate rocks ,Metacarbonate rocks derived from pre-Ordovician carbonate rocks during regional greenschist- and local amphibolite-facies metamorphism. Found as thin to thick marble layers and lenses intercalated with pre-Ordovician metasedimentary and metavolcanic rocks (pOmsv).,pre-Ordovician ,,,Craig,Metamorphic
8752,,5140,pOmc,KC013,Metacarbonate rocks ,Metacarbonate rocks derived from pre-Ordovician carbonate rocks during regional greenschist- and local amphibolite-facies metamorphism. Found as thin to thick marble layers and lenses intercalated with pre-Ordovician metasedimentary and metavolcanic rocks (pOmsv).,pre-Ordovician ,,,Ketchikan,Metamorphic
12500,,5110,pTmsv,BC006,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",pre-Tertiary,,,Bradfield Canal,Metamorphic
12500,,5110,pTmsv,JU012,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.",pre-Tertiary,,,Juneau,Metamorphic
12500,,5110,pTmsv,KC013,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.",pre-Tertiary,,,Ketchikan,Metamorphic
12500,,5110,pTmsv,PE006,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",pre-Tertiary,,,Petersburg,Metamorphic
12500,,5110,pTmsv,PR003,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.",pre-Tertiary,,,Prince Rupert,Metamorphic
12500,,5110,pTmsv,SD016,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.",pre-Tertiary,,,Sumdum,Metamorphic
12500,,5110,pTmsv,SK015,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.",pre-Tertiary,,,Skagway,Metamorphic
12500,,5110,pTmsv,TR008,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",pre-Tertiary,,,Taku River,Metamorphic
12500,Q,5111,pTmsv?,TR008,Metasedimentary and metavolcanic rocks,"Metasedimentary and metavolcanic rocks derived from pre-Tertiary sedimentary and volcanic rocks during regional amphibolite- and local granulite-facies metamorphism. Common rock types include pelitic, semipelitic, and quartzofeldspathic schist and gneiss, and subordinate amphibolite, quartzite, marble, and calc-silicate. Protoliths are interpreted to be argillaceous marine strata, limestone, chert, subordinate mafic to felsic volcanic rocks, and minor intrusive rocks.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",pre-Tertiary,,,Taku River,Metamorphic
12600,,5120,pTmc,PE006,Metacarbonate rocks ,"Metacarbonate rocks derived from pre-Tertiary carbonate rocks and carbonate-rich clastic strata during regional amphibolite- and local granulite-facies metamorphism. Found as discontinuous marble lenses, as thick continuous marble layers, and as calc-silicate gneiss.",pre-Tertiary,,,Petersburg,Metamorphic
12600,,5120,pTmc,SD016,Metacarbonate rocks ,"Metacarbonate rocks derived from pre-Tertiary carbonate rocks and carbonate-rich clastic strata during regional amphibolite- and local granulite-facies metamorphism. Found as discontinuous marble lenses, as thick continuous marble layers, and as calc-silicate gneiss.  (Where shown having a stippled overprint on map, consists of undifferentiated intrusive and stratified rocks where the map unit symbol and color in stippled area indicates dominant component.  PAT has ""GBS"" added to nsamod field.)",pre-Tertiary,,,Sumdum,Metamorphic
12600,,5120,pTmc,TR008,Metacarbonate rocks ,"Metacarbonate rocks derived from pre-Tertiary carbonate rocks and carbonate-rich clastic strata during regional amphibolite- and local granulite-facies metamorphism. Found as discontinuous marble lenses, as thick continuous marble layers, and as calc-silicate gneiss.",pre-Tertiary,,,Taku River,Metamorphic