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Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia

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What does this data set describe?

Title:: Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia
Abstract:: This report presents the results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database at a nominal scale of 1:500,000, to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources for input into regional- and national-scale geologic maps are state geologic maps with scales ranging from 1:100,000 to 1:1,000,000. Digital versions of these state maps form the core of what is presented here. Because no adequate geologic map exists for the state of Alaska, it is being compiled as regional blocks of 3 degree quadrangles that also form part of this national database. It is expected that this series will completed by approximately the end of 2007. These maps and databases are being released in blocks of states or, in the case of Alaska, as compiled blocks of 1:250,000-scale quadrangles as chapters in this series. For Alaska, formal maps as well as databases are being published here, whereas for the conterminous U.S. only state databases are presented, because published maps for most states already exist. For Alaska these regional compilations will form the base for compiling a new geologic map of the state. As documented in CONUS documentation, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii.
Supplemental_Information:: This database consists of five major Arc/Info GIS datasets for each state; - one: geologic map with formations, - two: faults (where present), - three: dikes (where present), - four: miscellaneous line features (where present), - five: miscellaneous point features (where present).

How should this data set be cited?
Dicken, Connie L. , Nicholson, Suzanne W. , Horton, John D. , Kinney, Scott A. , Gunther, Gregory, Foose, Michael P. , and Mueller, Julia A.L. , 2005, Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia: U.S. Geological Survey Open-File Report 2005-1325, U.S. Geological Survey, Reston, VA.
Online Links:
- <http://pubs.usgs.gov/of/2005/1325/>
What geographic area does the data set cover?

West_Bounding_Coordinate: -80.519865

East_Bounding_Coordinate: -74.689896

North_Bounding_Coordinate: 42.516015

South_Bounding_Coordinate: 39.719553
What does it look like?
Does the data set describe conditions during a particular time period?

Calendar_Date: 2005
Currentness_Reference: publication date
What is the general form of this data set?

Geospatial_Data_Presentation_Form: map
How does the data set represent geographic features?
1. How are geographic features stored in the data set?
  This is a Vector data set.
2. What coordinate system is used to represent geographic features?
  The map projection used is Lambert Conformal Conic.
  
  Projection parameters:
  
  Standard_Parallel: 33
  
  Standard_Parallel: 45
  
  Longitude_of_Central_Meridian: -100.0
  
  Latitude_of_Projection_Origin: 0
  
  False_Easting: 0.00000
  
  False_Northing: 0.00000
  
  Planar coordinates are encoded using coordinate pair
  Abscissae (x-coordinates) are specified to the nearest 0.01
  Ordinates (y-coordinates) are specified to the nearest 0.01
  Planar coordinates are specified in Meters
  
  The horizontal datum used is North American Datum of 1927.
  The ellipsoid used is Clarke 1866.
  The semi-major axis of the ellipsoid used is 6378206.4.
  The flattening of the ellipsoid used is 1/294.98.

How does the data set describe geographic features?

PA_geol.pat

Polygon attribute table for the Pennsylvania geologic coverage. (Source: ESRI)

ORIG_LABEL

unmodified map unit symbol from source cover.

type: character width: 12 output width: 12 (Source: Doug Stoeser)

Value	Definition
Ca	Antietam Formation
Cah	Antietam and Harpers Formations, undivided
Cal	Allentown Formation
Cbs	Buffalo Springs Formation
Cch	Chickies Formation
Ce	Elbrook Formation
Cg	Gatesburg Formation
Cgl	Lower members of Gatesburg Formation, undivided
Cgm	Mines Member of Gatesburg Formation
Ch	Harpers Formation
Cha	Hardyston Formation
Chm	Montalto Member of Harpers Formation
Ck	Kinzers Formation
Cl	Ledger Formation
Clv	Leithsville Formation
Cm	Millbach Formation
Cms	Winooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
Cph	Pleasant Hill Formation
Cr	Richland Formation
Csb	Snitz Creek and Buffalo Springs Formations, undivided
Csc	Snitz Creek Formation
Csg	Shadygrove Formation
Ct	Tomstown Formation
Cul	Lower (Middle?) Cambrian rocks, undivided
Cv	Vintage Formation
Cw	Warrior Formation
Cwb	Waynesboro Formation
Cwl	Weverton and Loudoun Formations, undivided
Cz	Zullinger Formation
Caz	Zooks Corner Formation
Dbe	Buttermilk Falls Limestone through Esopus Formation, undivided
Dbh	Brallier and Harrell Formations, undivided
Dbr	Berea Sandstone through Riceville Formation, undivided
Dbv	Berea Sandstone through Venango Formation, undivided
Dcb	Buddys Run Member of Catskill Formation
Dcbr	Beaverdam Run Member of Catskill Formation
Dcbs	Berry Run and Sawmill Run Members of Catskill Formation, undivided
Dccf	Clarks Ferry Member of Catskill Formation
Dcd	Duncannon Member of Catskill Formation
Dch	Chadakoin Formation
Dciv	Irish Valley Member of Catskill Formation
Dck	Catskill Formation
Dclr	Long Run Member of Catskill Formation
Dclw	Long Run and Walcksville Members of Catskill Formation, undivided
Dcp	Packerton Member of Catskill Formation
Dcpg	Poplar Gap Member of Catskill Formation
Dcpp	Poplar Gap and Packerton Members of Catskill Formation, undivided
Dcr	Corry Sandstone through Riceville Formation, undivided
Dcsc	Sherman Creek Member of Catskill Formation
Dct	Towamensing Member of Catskill Formation
Dcw	Walcksville Member of Catskill Formation
Dcwt	Walcksville and Towamensing Members of Catskill Formation, undivided
Df	Foreknobs Formation
Dg	Girard Shale
Dh	Hamilton Group
Dlh	Lock Haven Formation
Dm	Marcellus Formation
Dmh	Mahantango Formation
Dne	Northeast Shale
Don	Onondaga Formation
Doo	Onondaga and Old Port Formations, undivided
Dor	Ridgeley Member of Old Port Formation
Dosn	Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
Drc	Ridgeley Formation through Coeymans Formation, undivided
Ds	Scherr Formation
DSkc	Keyser Formation through Clinton Group, undivided
DSkm	Keyser Formation through Mifflintown Formation, undivided
DSkt	Keyser and Tonoloway Formations, undivided
DSop	Onondaga Formation through Poxono Island Formation, undivided
Dtr	Trimmers Rock Formation
Dv	Venango Formation
Jd	Diabase
Js	Sedimentary strata at Jacksonwald and Aspers
Kp	Patapsco(?) Formation
Mb	Burgoon Sandstone
Mbc	Burgoon Sandstone through Cuyahoga Group, undifferentiated
Mc	Cuyahoga Group
MDhm	Huntley Mountain Formation
MDpr	Pocono and Rockwell Formations, undivided
MDr	Rockwell Formation
MDsk	Spechty Kopf Formation
MDso	Shenango Formation through Oswayo Formation, undivided
MDsr	Shenango Formation through Riceville Formation, undivided
Mmc	Mauch Chunk Formation
Mp	Pocono Formation
Ms	Shenango Formation
Msc	Shenango Formation through Cuyahoga Group, undivided
Oa	Axemann Formation
Oan	Annville Formation
Ob	Beekmantown Group
Oba	Bellefonte and Axemann Formations, undivided
Obe	Bald Eagle Formation
Obf	Bellefonte Formation
Obl	Benner Formation through Loysburg Formation, undivided
Obv	Valentine Member of Benner Formation
Oc	Chambersburg Formation
OCc	Conestoga Formation
Ocl	Coburn Formation through Loysburg Formation, undivided
Ocn	Coburn Formation through Nealmont Formation, undivided
Oco	Cocalico Formation
Oe	Epler Formation
Oh	Hamburg sequence rocks
Oha	Hershey Formation through Annville Formation, undivided
Ohg	Graywacke of Hamburg sequence
Ohjv	Jonestown Volcanic Suite
Ohl	Limestone of Hamburg sequence
Ohm	Hershey and Myerstown Formations, undivided
Ohsg	Shale and graywacke of Hamburg sequence
Oj	Juniata Formation
Ojb	Juniata and Bald Eagle Formations, undivided
Ojk	Jacksonburg Formation
Om	Martinsburg Formation
Omgs	Graywacke and shale of Martinsburg Formation
Oml	Limestone of Martinsburg Formation
On	Nittany Formation
Ons	Nittany and Stonehenge/Larke Formations, undivided
Oo	Ontelaunee Formation
Ops	Pinesburg Station Formation
Or	Reedsville Formation
Ori	Rickenbach Formation
Orr	Rockdale Run Formation
Os	Stonehenge Formation
Osl	Stonehenge/Larke Formation
Osp	St. Paul Group
Pa	Allegheny Formation
Pap	Allegheny and Pottsville Formations, undivided
Pc	Conemaugh Group
Pcc	Casselman Formation
Pcg	Glenshaw Formation
Pl	Llewellyn Formation
Pm	Monongahela Group
Pp	Pottsville Formation
a	Anorthosite
fgh	Felsic and intermediate gneiss
fgp	Felsic gneiss
fm	Franklin Marble
gg	Graphitic felsic gneiss
gga	Banded mafic gneiss
ggd	Felsic and intermediate gneiss
gn	Felsic to mafic gneiss
gqm	Graphitic felsic gneiss
hg	Hornblende gneiss
mb	Metabasalt
md	Metadiabase
mgh	Mafic gneiss
mgp	Mafic gneiss
mr	Metarhyolite
vs	Greenstone schist
Pg	Greene Formation
PPw	Waynesburg Formation
Pw	Washington Formation
Xa	Anorthosite
Xc	Cockeysville Marble
Xgr	Granitic gneiss and granite
Xgw	"Glenarm Wissahickon" formation
Xm	Marburg Schist
Xmg	Metagabbro
Xmgh	Mafic gneiss
Xmgp	Mafic gneiss
Xo	Octoraro Formation
Xpb	Peach Bottom Slate and Cardiff Conglomerate, undivided
Xpc	Peters Creek Schist
Xpg	Pegmatite
Xsc	Sams Creek Metabasalt
Xsq	Setters Quartzite
Xu	Ultramafic rocks
Xw	Wissahickon Formation
Xwk	Wakefield Marble
Qs	Sands of Presque Isle
Qt	Trenton Gravel
Sb	Bloomsburg Formation
Sbm	Bloomsburg and Mifflintown Formations, undivided
Sc	Clinton Group
Sdp	Decker Formation through Poxono Island Formation, undivided
Ss	Shawangunk Formation
St	Tuscarora Formation
Swc	Wills Creek Formation
Swm	Wills Creek Formation through Mifflintown Formation, undivided
Tbm	Bryn Mawr Formation
Tpb	Pensauken and Bridgeton Formations, undifferentiated
Trb	Brunswick Formation
Trfl	Limestone fanglomerate
Trfq	Quartz fanglomerate
Trg	Gettysburg Formation
Trgc	Gettysburg conglomerate
Trgh	Heidlersburg Member of Gettysburg Formation
Trh	Hammer Creek Formation
Trhc	Hammer Creek conglomerate
Trl	Lockatong Formation
Trn	New Oxford Formation
Trnc	New Oxford conglomerate
Trs	Stockton Formation
Trsc	Stockton conglomerate
water	water

SGMC_LABEL

orig_label + ;n where n= province number (n=0 if no province number)

type: character width: 16 output width: 16 (Source: Doug Stoeser)

Value	Definition
CAa;22	Antietam Formation
CAa;24	Antietam Formation
CAah;22	Antietam and Harpers Formations, undivided
CAal;23	Allentown Formation
CAbs;22	Buffalo Springs Formation
CAch;22	Chickies Formation
CAe;22	Elbrook Formation
CAe;24	Elbrook Formation
CAg;15	Gatesburg Formation
CAgl;15	Lower members of Gatesburg Formation, undivided
CAgm;15	Mines Member of Gatesburg Formation
CAh;22	Harpers Formation
CAh;24	Harpers Formation
CAha;23	Hardyston Formation
CAhm;24	Montalto Member of Harpers Formation
CAk;22	Kinzers Formation
CAl;22	Ledger Formation
CAlv;23	Leithsville Formation
CAm;22	Millbach Formation
CAms;22	Winooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
CAph;15	Pleasant Hill Formation
CAr;22	Richland Formation
CAsb;22	Snitz Creek and Buffalo Springs Formations, undivided
CAsc;22	Snitz Creek Formation
CAsg;24	Shadygrove Formation
CAt;24	Tomstown Formation
CAul;22	Lower (Middle?) Cambrian rocks, undivided
CAv;22	Vintage Formation
CAw;15	Warrior Formation
CAwb;15	Waynesboro Formation
CAwb;24	Waynesboro Formation
CAwl;24	Weverton and Loudoun Formations, undivided
CAz;24	Zullinger Formation
CAzc;22	Zooks Corner Formation
Dbe;14	Buttermilk Falls Limestone through Esopus Formation, undivided
Dbh;12	Brallier and Harrell Formations, undivided
Dbr;8	Berea Sandstone through Riceville Formation, undivided
Dbv;8	Berea Sandstone through Venango Formation, undivided
Dcb;17	Buddys Run Member of Catskill Formation
Dcbr;18	Beaverdam Run Member of Catskill Formation
Dcbs;18	Berry Run and Sawmill Run Members of Catskill Formation, undivided
Dccf;17	Clarks Ferry Member of Catskill Formation
Dccf;18	Clarks Ferry Member of Catskill Formation
Dcd;17	Duncannon Member of Catskill Formation
Dcd;18	Duncannon Member of Catskill Formation
Dch;8	Chadakoin Formation
Dciv;17	Irish Valley Member of Catskill Formation
Dck;12	Catskill Formation
Dck;15	Catskill Formation
Dck;16	Catskill Formation
Dclr;18	Long Run Member of Catskill Formation
Dclw;18	Long Run and Walcksville Members of Catskill Formation, undivided
Dcp;18	Packerton Member of Catskill Formation
Dcpg;18	Poplar Gap Member of Catskill Formation
Dcpp;18	Poplar Gap and Packerton Members of Catskill Formation, undivided
Dcr;8	Corry Sandstone through Riceville Formation, undivided
Dcsc;17	Sherman Creek Member of Catskill Formation
Dct;18	Towamensing Member of Catskill Formation
Dcw;18	Walcksville Member of Catskill Formation
Dcwt;18	Walcksville and Towamensing Members of Catskill Formation, undivided
Df;12	Foreknobs Formation
Dg;8	Girard Shale
Dh;0	Hamilton Group
Dlh;15	Lock Haven Formation
Dm;0	Marcellus Formation
Dmh;0	Mahantango Formation
Dne;8	Northeast Shale
Don;19	Onondaga Formation
Doo;19	Onondaga and Old Port Formations, undivided
Dor;19	Ridgeley Member of Old Port Formation
Dosn;19	Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
Drc;14	Ridgeley Formation through Coeymans Formation, undivided
Ds;12	Scherr Formation
DSkc;19	Keyser Formation through Clinton Group, undivided
DSkm;19	Keyser Formation through Mifflintown Formation, undivided
DSkt;19	Keyser and Tonoloway Formations, undivided
DSop;14	Onondaga Formation through Poxono Island Formation, undivided
Dtr;16	Trimmers Rock Formation
Dv;8	Venango Formation
Jd;0	Diabase
Js;0	Sedimentary strata at Jacksonwald and Aspers
Kp;0	Patapsco(?) Formation
Mb;10	Burgoon Sandstone
Mbc;9	Burgoon Sandstone through Cuyahoga Group, undifferentiated
Mc;8	Cuyahoga Group
MDhm;13	Huntley Mountain Formation
MDpr;12	Pocono and Rockwell Formations, undivided
MDr;12	Rockwell Formation
MDsk;14	Spechty Kopf Formation
MDso;8	Shenango Formation through Oswayo Formation, undivided
MDsr;8	Shenango Formation through Riceville Formation, undivided
Mmc;7	Mauch Chunk Formation
Mp;11	Pocono Formation
Ms;8	Shenango Formation
Msc;8	Shenango Formation through Cuyahoga Group, undivided
Oa;15	Axemann Formation
Oan;22	Annville Formation
Ob;20	Beekmantown Group
Ob;23	Beekmantown Group
Oba;15	Bellefonte and Axemann Formations, undivided
Obe;15	Bald Eagle Formation
Obf;15	Bellefonte Formation
Obl;15	Benner Formation through Loysburg Formation, undivided
Obv;15	Valentine Member of Benner Formation
Oc;20	Chambersburg Formation
OCAc;0	Conestoga Formation
Ocl;15	Coburn Formation through Loysburg Formation, undivided
Ocn;15	Coburn Formation through Nealmont Formation, undivided
Oco;21	Cocalico Formation
Oe;23	Epler Formation
Oh;21	Hamburg sequence rocks
Oha;22	Hershey Formation through Annville Formation, undivided
Ohg;21	Graywacke of Hamburg sequence
Ohjv;21	Jonestown Volcanic Suite
Ohl;21	Limestone of Hamburg sequence
Ohm;22	Hershey and Myerstown Formations, undivided
Ohsg;21	Shale and graywacke of Hamburg sequence
Oj;15	Juniata Formation
Ojb;15	Juniata and Bald Eagle Formations, undivided
Ojk;23	Jacksonburg Formation
Om;20	Martinsburg Formation
Om;22	Martinsburg Formation
Om;23	Martinsburg Formation
Omgs;20	Graywacke and shale of Martinsburg Formation
Omgs;23	Graywacke and shale of Martinsburg Formation
Oml;20	Limestone of Martinsburg Formation
Oml;23	Limestone of Martinsburg Formation
On;15	Nittany Formation
Ons;15	Nittany and Stonehenge/Larke Formations, undivided
Oo;22	Ontelaunee Formation
Oo;23	Ontelaunee Formation
Ops;20	Pinesburg Station Formation
Or;15	Reedsville Formation
Ori;22	Rickenbach Formation
Ori;23	Rickenbach Formation
Orr;20	Rockdale Run Formation
Os;20	Stonehenge Formation
Os;22	Stonehenge Formation
Os;23	Stonehenge Formation
Osl;15	Stonehenge/Larke Formation
Osp;20	St. Paul Group
PAa;6	Allegheny Formation
PAap;6	Allegheny and Pottsville Formations, undivided
PAc;6	Conemaugh Group
PAcc;6	Casselman Formation
PAcg;6	Glenshaw Formation
PAl;7	Llewellyn Formation
PAm;6	Monongahela Group
PAp;6	Pottsville Formation
pCAa;14	Anorthosite
pCAfgh;14	Felsic and intermediate gneiss
pCAfgp;14	Felsic gneiss
pCAfm;14	Franklin Marble
pCAgg;14	Graphitic felsic gneiss
pCAgga;14	Banded mafic gneiss
pCAggd;14	Felsic and intermediate gneiss
pCAgn;14	Felsic to mafic gneiss
pCAgqm;14	Graphitic felsic gneiss
pCAhg;14	Hornblende gneiss
pCAmb;25	Metabasalt
pCAmd;14	Metadiabase
pCAmgh;14	Mafic gneiss
pCAmgp;14	Mafic gneiss
pCAmr;25	Metarhyolite
pCAvs;25	Greenstone schist
Pg;0	Greene Formation
PPAw;0	Waynesburg Formation
Pw;0	Washington Formation
PZa;0	Anorthosite
PZc;0	Cockeysville Marble
PZgr;0	Granitic gneiss and granite
PZgw;0	"Glenarm Wissahickon" formation
PZm;0	Marburg Schist
PZmg;0	Metagabbro
PZmgh;0	Mafic gneiss
PZmgp;0	Mafic gneiss
PZo;0	Octoraro Formation
PZpb;0	Peach Bottom Slate and Cardiff Conglomerate, undivided
PZpc;0	Peters Creek Schist
PZpg;0	Pegmatite
PZsc;0	Sams Creek Metabasalt
PZsq;0	Setters Quartzite
PZu;0	Ultramafic rocks
PZw;0	Wissahickon Formation
PZwk;0	Wakefield Marble
Qs;0	Sands of Presque Isle
Qt;0	Trenton Gravel
Sb;14	Bloomsburg Formation
Sb;19	Bloomsburg Formation
Sbm;19	Bloomsburg and Mifflintown Formations, undivided
Sc;19	Clinton Group
Sdp;14	Decker Formation through Poxono Island Formation, undivided
Ss;14	Shawangunk Formation
St;19	Tuscarora Formation
Swc;19	Wills Creek Formation
Swm;19	Wills Creek Formation through Mifflintown Formation, undivided
Tbm;0	Bryn Mawr Formation
Tpb;0	Pensauken and Bridgeton Formations, undifferentiated
TRb;3	Brunswick Formation
TRfl;0	Limestone fanglomerate
TRfq;0	Quartz fanglomerate
TRg;1	Gettysburg Formation
TRgc;1	Gettysburg conglomerate
TRgh;1	Heidlersburg Member of Gettysburg Formation
TRh;2	Hammer Creek Formation
TRhc;2	Hammer Creek conglomerate
TRl;3	Lockatong Formation
TRn;4	New Oxford Formation
TRnc;4	New Oxford conglomerate
TRs;5	Stockton Formation
TRsc;5	Stockton conglomerate
water;0	water

unit_link

composite map label = ST + sgmc_label This creates a unique identifier for every unit in the CONUS (continental United States) covers.

type: character width: 18 output width: 18 (Source: Doug Stoeser)

Value	Definition
PACAa;22	Antietam Formation
PACAa;24	Antietam Formation
PACAah;22	Antietam and Harpers Formations, undivided
PACAal;23	Allentown Formation
PACAbs;22	Buffalo Springs Formation
PACAch;22	Chickies Formation
PACAe;22	Elbrook Formation
PACAe;24	Elbrook Formation
PACAg;15	Gatesburg Formation
PACAgl;15	Lower members of Gatesburg Formation, undivided
PACAgm;15	Mines Member of Gatesburg Formation
PACAh;22	Harpers Formation
PACAh;24	Harpers Formation
PACAha;23	Hardyston Formation
PACAhm;24	Montalto Member of Harpers Formation
PACAk;22	Kinzers Formation
PACAl;22	Ledger Formation
PACAlv;23	Leithsville Formation
PACAm;22	Millbach Formation
PACAms;22	Winooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
PACAph;15	Pleasant Hill Formation
PACAr;22	Richland Formation
PACAsb;22	Snitz Creek and Buffalo Springs Formations, undivided
PACAsc;22	Snitz Creek Formation
PACAsg;24	Shadygrove Formation
PACAt;24	Tomstown Formation
PACAul;22	Lower (Middle?) Cambrian rocks, undivided
PACAv;22	Vintage Formation
PACAw;15	Warrior Formation
PACAwb;15	Waynesboro Formation
PACAwb;24	Waynesboro Formation
PACAwl;24	Weverton and Loudoun Formations, undivided
PACAz;24	Zullinger Formation
PACAzc;22	Zooks Corner Formation
PADbe;14	Buttermilk Falls Limestone through Esopus Formation, undivided
PADbh;12	Brallier and Harrell Formations, undivided
PADbr;8	Berea Sandstone through Riceville Formation, undivided
PADbv;8	Berea Sandstone through Venango Formation, undivided
PADcb;17	Buddys Run Member of Catskill Formation
PADcbr;18	Beaverdam Run Member of Catskill Formation
PADcbs;18	Berry Run and Sawmill Run Members of Catskill Formation, undivided
PADccf;17	Clarks Ferry Member of Catskill Formation
PADccf;18	Clarks Ferry Member of Catskill Formation
PADcd;17	Duncannon Member of Catskill Formation
PADcd;18	Duncannon Member of Catskill Formation
PADch;8	Chadakoin Formation
PADciv;17	Irish Valley Member of Catskill Formation
PADck;12	Catskill Formation
PADck;15	Catskill Formation
PADck;16	Catskill Formation
PADclr;18	Long Run Member of Catskill Formation
PADclw;18	Long Run and Walcksville Members of Catskill Formation, undivided
PADcp;18	Packerton Member of Catskill Formation
PADcpg;18	Poplar Gap Member of Catskill Formation
PADcpp;18	Poplar Gap and Packerton Members of Catskill Formation, undivided
PADcr;8	Corry Sandstone through Riceville Formation, undivided
PADcsc;17	Sherman Creek Member of Catskill Formation
PADct;18	Towamensing Member of Catskill Formation
PADcw;18	Walcksville Member of Catskill Formation
PADcwt;18	Walcksville and Towamensing Members of Catskill Formation, undivided
PADf;12	Foreknobs Formation
PADg;8	Girard Shale
PADh;0	Hamilton Group
PADlh;15	Lock Haven Formation
PADm;0	Marcellus Formation
PADmh;0	Mahantango Formation
PADne;8	Northeast Shale
PADon;19	Onondaga Formation
PADoo;19	Onondaga and Old Port Formations, undivided
PADor;19	Ridgeley Member of Old Port Formation
PADosn;19	Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
PADrc;14	Ridgeley Formation through Coeymans Formation, undivided
PADs;12	Scherr Formation
PADSkc;19	Keyser Formation through Clinton Group, undivided
PADSkm;19	Keyser Formation through Mifflintown Formation, undivided
PADSkt;19	Keyser and Tonoloway Formations, undivided
PADSop;14	Onondaga Formation through Poxono Island Formation, undivided
PADtr;16	Trimmers Rock Formation
PADv;8	Venango Formation
PAJd;0	Diabase
PAJs;0	Sedimentary strata at Jacksonwald and Aspers
PAKp;0	Patapsco(?) Formation
PAMb;10	Burgoon Sandstone
PAMbc;9	Burgoon Sandstone through Cuyahoga Group, undifferentiated
PAMc;8	Cuyahoga Group
PAMDhm;13	Huntley Mountain Formation
PAMDpr;12	Pocono and Rockwell Formations, undivided
PAMDr;12	Rockwell Formation
PAMDsk;14	Spechty Kopf Formation
PAMDso;8	Shenango Formation through Oswayo Formation, undivided
PAMDsr;8	Shenango Formation through Riceville Formation, undivided
PAMmc;7	Mauch Chunk Formation
PAMp;11	Pocono Formation
PAMs;8	Shenango Formation
PAMsc;8	Shenango Formation through Cuyahoga Group, undivided
PAOa;15	Axemann Formation
PAOan;22	Annville Formation
PAOb;20	Beekmantown Group
PAOb;23	Beekmantown Group
PAOba;15	Bellefonte and Axemann Formations, undivided
PAObe;15	Bald Eagle Formation
PAObf;15	Bellefonte Formation
PAObl;15	Benner Formation through Loysburg Formation, undivided
PAObv;15	Valentine Member of Benner Formation
PAOc;20	Chambersburg Formation
PAOCAc;0	Conestoga Formation
PAOcl;15	Coburn Formation through Loysburg Formation, undivided
PAOcn;15	Coburn Formation through Nealmont Formation, undivided
PAOco;21	Cocalico Formation
PAOe;23	Epler Formation
PAOh;21	Hamburg sequence rocks
PAOha;22	Hershey Formation through Annville Formation, undivided
PAOhg;21	Graywacke of Hamburg sequence
PAOhjv;21	Jonestown Volcanic Suite
PAOhl;21	Limestone of Hamburg sequence
PAOhm;22	Hershey and Myerstown Formations, undivided
PAOhsg;21	Shale and graywacke of Hamburg sequence
PAOj;15	Juniata Formation
PAOjb;15	Juniata and Bald Eagle Formations, undivided
PAOjk;23	Jacksonburg Formation
PAOm;20	Martinsburg Formation
PAOm;22	Martinsburg Formation
PAOm;23	Martinsburg Formation
PAOmgs;20	Graywacke and shale of Martinsburg Formation
PAOmgs;23	Graywacke and shale of Martinsburg Formation
PAOml;20	Limestone of Martinsburg Formation
PAOml;23	Limestone of Martinsburg Formation
PAOn;15	Nittany Formation
PAOns;15	Nittany and Stonehenge/Larke Formations, undivided
PAOo;22	Ontelaunee Formation
PAOo;23	Ontelaunee Formation
PAOps;20	Pinesburg Station Formation
PAOr;15	Reedsville Formation
PAOri;22	Rickenbach Formation
PAOri;23	Rickenbach Formation
PAOrr;20	Rockdale Run Formation
PAOs;20	Stonehenge Formation
PAOs;22	Stonehenge Formation
PAOs;23	Stonehenge Formation
PAOsl;15	Stonehenge/Larke Formation
PAOsp;20	St. Paul Group
PAPAa;6	Allegheny Formation
PAPAap;6	Allegheny and Pottsville Formations, undivided
PAPAc;6	Conemaugh Group
PAPAcc;6	Casselman Formation
PAPAcg;6	Glenshaw Formation
PAPAl;7	Llewellyn Formation
PAPAm;6	Monongahela Group
PAPAp;6	Pottsville Formation
PApCAa;14	Anorthosite
PApCAfgh;14	Felsic and intermediate gneiss
PApCAfgp;14	Felsic gneiss
PApCAfm;14	Franklin Marble
PApCAgg;14	Graphitic felsic gneiss
PApCAgga;14	Banded mafic gneiss
PApCAggd;14	Felsic and intermediate gneiss
PApCAgn;14	Felsic to mafic gneiss
PApCAgqm;14	Graphitic felsic gneiss
PApCAhg;14	Hornblende gneiss
PApCAmb;25	Metabasalt
PApCAmd;14	Metadiabase
PApCAmgh;14	Mafic gneiss
PApCAmgp;14	Mafic gneiss
PApCAmr;25	Metarhyolite
PApCAvs;25	Greenstone schist
PAPg;0	Greene Formation
PAPPAw;0	Waynesburg Formation
PAPw;0	Washington Formation
PAPZa;0	Anorthosite
PAPZc;0	Cockeysville Marble
PAPZgr;0	Granitic gneiss and granite
PAPZgw;0	"Glenarm Wissahickon" formation
PAPZm;0	Marburg Schist
PAPZmg;0	Metagabbro
PAPZmgh;0	Mafic gneiss
PAPZmgp;0	Mafic gneiss
PAPZo;0	Octoraro Formation
PAPZpb;0	Peach Bottom Slate and Cardiff Conglomerate, undivided
PAPZpc;0	Peters Creek Schist
PAPZpg;0	Pegmatite
PAPZsc;0	Sams Creek Metabasalt
PAPZsq;0	Setters Quartzite
PAPZu;0	Ultramafic rocks
PAPZw;0	Wissahickon Formation
PAPZwk;0	Wakefield Marble
PAQs;0	Sands of Presque Isle
PAQt;0	Trenton Gravel
PASb;14	Bloomsburg Formation
PASb;19	Bloomsburg Formation
PASbm;19	Bloomsburg and Mifflintown Formations, undivided
PASc;19	Clinton Group
PASdp;14	Decker Formation through Poxono Island Formation, undivided
PASs;14	Shawangunk Formation
PASt;19	Tuscarora Formation
PASwc;19	Wills Creek Formation
PASwm;19	Wills Creek Formation through Mifflintown Formation, undivided
PATbm;0	Bryn Mawr Formation
PATpb;0	Pensauken and Bridgeton Formations, undifferentiated
PATRb;3	Brunswick Formation
PATRfl;0	Limestone fanglomerate
PATRfq;0	Quartz fanglomerate
PATRg;1	Gettysburg Formation
PATRgc;1	Gettysburg conglomerate
PATRgh;1	Heidlersburg Member of Gettysburg Formation
PATRh;2	Hammer Creek Formation
PATRhc;2	Hammer Creek conglomerate
PATRl;3	Lockatong Formation
PATRn;4	New Oxford Formation
PATRnc;4	New Oxford conglomerate
PATRs;5	Stockton Formation
PATRsc;5	Stockton conglomerate
PAwater;0	water

source

An alphanumeric code (e.g. US001) that designates the source material used.

type: character width: 6 output width: 8 (Source: Doug Stoeser)

Value	Definition
PA002	Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.htm> DL Data: pageoexp.zip
US001	Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, Chapter A)

unit_age

The geologic age from the source map used.

type: character width: 60 output width: 60 (Source: Doug Stoeser)

Value	Definition
Cambrian
Cretaceous
Devonian
Devonian and Silurian
Jurassic
Mississippian
Mississippian and Devonian
Ordovician
Ordovician and Cambrian
Pennsylvanian
Permian
Permian and Pennsylvanian
Precambrian
Probably lower Paleozoic
Quaternary
Silurian
Tertiary
Triassic

rocktype1

The predominant lithology found in the formation.

type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1a)

Value	Definition
andesite
anorthosite
argillite
arkose
black shale
clay
conglomerate
diabase
dolostone (dolomite)
felsic gneiss
granitic gneiss
gravel
graywacke
greenschist
indeterminate
intermediate metavolcanic rock
limestone
mafic gneiss
mafic metavolcanic rock
marble
meta-basalt
meta-rhyolite
mica schist
mudstone
paragneiss
pegmatite
phyllite
quartzite
sand
sandstone
schist
serpentinite
shale
siltstone
slate
water

rocktype2

The second most predominant lithology in the formation.

type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1)

Value	Definition
argillite
black shale
chert
conglomerate
dolostone (dolomite)
felsic gneiss
gneiss
granite
gravel
graywacke
limestone
mafic gneiss
mafic metavolcanic rock
marble
metavolcanic rock
mica gneiss
mica schist
mudstone
paragneiss
phyllite
pyroxenite
quartzite
sand
sandstone
schist
shale
silt
siltstone

PA_geol.aat

Arc attribute table for Pennsylvania geologic coverage. (Source: ESRI)

arc-code

Unique identifier for the line feature

type: integer width: 3 output width: 3 (Source: AAT data dictionary)

Value	Definition
1	contact, location certain
7	shoreline or riverbank
30	fault, sense of displacement unknown or undefined, location certain.
124	state boundary

arc-para1

Used for "decorated" lines where additional information is needed.

type: integer width: 3 output width: 3 (Source: AAT data dictionary)

Value	Definition
0	no additional information

arc-para2

"Scratch" field used mostly in Alaska.

type: integer width: 3 output width: 3 (Source: AAT data dictionary)

Value	Definition
0	no additional information

source

An alphanumeric code (e.g. US001) that designates the source material used.

type: character width: 6 output width: 8 (Source: Doug Stoeser)

Value	Definition
PA002	Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.htm> DL Data: pageoexp.zip
US001	Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, Chapter A)

Entity_and_Attribute_Overview:

Coding for polygon attributes:

NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province unit_link sgmc_label and a state code identifier source reference to source of data unit_age geologic age rocktype1 predominant lithology rocktype2 second most predominant lithology

Coding for arc attributes:

NAME: FEATURE: arc-code unique integer identifier arc-para1 used where additional information is needed arc-para2 scratch field source reference to source of data

Coding for point attributes:

NAME: FEATURE: point_feature name of feature on map source reference to source of data

Coding for dikes (special arcs) attributes:

NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province arc-code unique integer identifier dike_lith general lithology dike_age geologic age source reference to source of data

Entity_and_Attribute_Detail_Citation: ESRI

Who produced the data set?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Connie L. Dicken
- Suzanne W. Nicholson
- John D. Horton
- Scott A. Kinney
- Gregory Gunther
- Michael P. Foose
- Julia A.L. Mueller
Who also contributed to the data set?

State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis projects of the US Geological Survey Mineral Resources Program.
To whom should users address questions about the data?

Suzanne W. Nicholson
U.S. Geological Survey
12201 Sunrise Valley Dr. MS954
Reston, VA 20192
USA

703-648-6344 (voice)
swnich@usgs.gov

Why was the data set created?

A primary goal of this work is to develop geologic map datasets with standardized structure and attribution. The database design and standards are documented in CONUS documentation of this report. The intent is that contiguous databases can be merged seamlessly and without any additional effort. In addition to a common database structure, the conterminous U.S. state databases (the contiguous 48 states) have been fitted to a set of standard state boundaries derived from the USGS Digial Line Graph 1:100,000 quadrangle boundaries (Johnson and Leveritch, 1998) so that, when states are merged, they match without slivers or overlap. No attempt has been made to reconcile differences in mapping across state boundaries.

How was the data set created?

From what previous works were the data drawn?
pa geology (source 1 of 3)
Pennsylvania Bureau of Topographic and Geologic Survey, and Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvanian, edition: 1.0, digital map: Pennsylvania Geological Survey, Middletown, PA.
Online Links:
- <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx>
Type_of_Source_Media: vector

Source_Scale_Denominator: 250,000

Source_Contribution: provided geology for state map
state boundaries (source 2 of 3)

Johnson, Bruce R. , unpublished, 1:100,000 Scale State Boundaries of the Conterminous United States.

Other_Citation_Details:
Arc/INFO coverage developed by Bruce Johnson. Derived from USGS 100,000-scale DLG boundary layer quadrangles.

Type_of_Source_Media: online

Source_Scale_Denominator: 100,000

Source_Contribution: provided linework of the conterminous state boundaries

lithclass (source 3 of 3)

Johnson, Bruce R. , unpublished, Geologic Map Unit Classification, ver. 6.1.

Other_Citation_Details:
Document has been modified and is included in Appedices of the publication.

Type_of_Source_Media: online; http:/geology.usgs.gov/dm

Source_Scale_Denominator: none

Source_Contribution:
Source of lithologic codes and specific rock names found in ROCKTYPE1 and ROCKTYPE2.
How were the data generated, processed, and modified?

Date: 2003 (process 1 of 10)
The purpose of this standardization is to allow all covers to be seamlessly joined without any additional effort to form regional or national level digital maps. Note that for Alaska, the state is being compiled as blocks of 1:250k quadrangles that will ultimately be used to compile a new state map. Douglas Stoeser and Ric Wilson are co-coordinators for the overall State Geologic Map Compilation (SGMC) effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii.

Date: 2005 (process 2 of 10)
Data was downloaded from the web and the coverage was re-projected into the following:
projection: Lambert Conformal Conic units: meters datum: NAD27 standard parallel 1: 33 0 0.000 standard parallel 2: 45 0 0.000 central meridian: -100 0 0.000 reference latitude: 0 0 0.000 false easting: 0.00000 false northing: 0.00000
All attributes were deleted except map_symbol.
(Note: Attributes associated with the generation of the coverages were not deleted. PAT - shape, area, perimeter, coverage#, and coverage-id AAT - shape, fnode#, tnode#, lnode#, rnode#, length, coverage#, and coverage-id)
The values from map_symbol where then calculated into a new field called orig_label.

Date: 2005 (process 3 of 10)
The relevant state outline (arcs) was removed from the coverage and replaced with the arcs from the 1:100,000 Scale State Boundaries of the Conterminous United States.
This allows for a seamless fit of each state to a standard state boundary base.

Date: 2005 (process 4 of 10)
The following attributes were exported from Filemaker as a .dbf: orig_label, map_symbol2, unit_link, reference_id, unit_age, rocktype1, and rocktype2.
orig_label reflects the original map symbol used on the source map
map_symbol2 reflects map-symbol1 with the addition of a province number (renamed sgmc_label in PAT)
unit_link is an auto generated field based on map-symbol2 and the state abbreviation (e.g. IN001) that produces a unique identifier for each map unit
reference_id was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework and other references used to describe the age or lithologies of the unit. (renamed source in PAT)
unit_age was populated with general age assignment
rocktype1 records dominant lithology (must be >50% of unit), using standardized data dictionary
rocktype2 records second most dominant lithology, using standardized data dictionary
The attributes were then converted using the following structure:
item name: orig_label width: 12 output: 12 type: c
item name: sgmc_label width: 16 output: 16 type: c
item name: unit_link width: 18 output: 18 type: c
item name: source width: 6 output: 8 type: c
item name: unit_age width: 60 output: 60 type: c
item name: rocktype1 width: 40 output: 40 type: c
item name: rocktype2 width: 40 output: 40 type: c

Date: 2005 (process 5 of 10)
Once the .dbf was in the correct format with standardized column widths and data structure, it was converted into a lookup table (.lut) in Arc/Info. Then a joinitem was performed to join the look-up table to the polygon attribute table. orig_label was used as the merge item.

Date: 2005 (process 6 of 10)
Next, in preparing the uniform .aat file, the following items were added to the table:
item name: arc-code width: 3 output: 3 type: i
item name: arc-para1 width: 3 output: 3 type: i
item name: arc-para2 width: 3 output: 3 type: i
item name: source width: 6 output: 8 type: c

Date: 2005 (process 7 of 10)
Arc-code was populated using the paper map source to tag the lines using the AAT line type data dictionary (see CONUS documentation in this report).
Arc-para1 was populated when additional information was available such as identifying the upthrown side of a fault or direction of thrusting on a fault. (see CONUS documentation)
Arc-para2 is a scratch field that is used mostly in Alaska.
Source was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework.

Date: 2005 (process 8 of 10)
Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (PAgeol_lcc.e00).
Then it was unprojected into geographic coordinates and exported again (PAgeol_dd.e00).

Date: 2005 (process 9 of 10)
Faults were extracted from the coverage and created a separate fault coverage (PAfaults_lcc) and then exported (PAfaults_lcc.e00). The lines were simplified by the following:
Arcedit: select all Arcedit: unsplit none
This decreased the number of arcs from 13454 to 4696.

Date: 2005 (process 10 of 10)
Finally, the geology lines and geology polygons were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection.
What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

How well have the observations been checked?
The values of the attributes ROCKTYPE1 and ROCKTYPE2 were assigned based on the information in the legends of the source maps (most of which are paper). The definitions of these values are described in the draft document Geologic Map Classification version 6.1 (Johnson and others); available at the following website: <http://www.nadm-geo.org/dmdt/index.html>
How accurate are the geographic locations?
Accuracy of Pennsylvania state boundary and those arcs intersecting it: The accuracy of the state boundary arcs is based on the 1:100,000 scale original data used to produce this boundary. (Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished).
Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error.
How accurate are the heights or depths?
Where are the gaps in the data? What is missing?
Bodies of water are classified as water, and the geologic units underlying them are not included in this coverage.
How consistent are the relationships among the observations, including topology?
All internal polygons were checked for closure with vendor software and on hard copy plots. Overshoots and undershoots have been deleted or corrected as appropriate.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: none

Use_Constraints:
This database is not meant to be used or displayed at any scale other than 1:500,000.
Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey.

Who distributes the data set? (Distributor 1 of 1)

U.S. Geological Survey Information Services Reston-ESIC
U.S. Geological Survey
507 National Center
Reston, Virginia 20192
USA

1-888-ASK-USGS or 1-703-648-5953 (voice)
<http://www.usgs.gov/contact/>
What's the catalog number I need to order this data set?
What legal disclaimers am I supposed to read?

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:500,000.
How can I download or order the data?
- Availability in digital form:
  
  Data format: Geologic units and structural features in format ARC/INFO export (version 9.0)
  
  Network links: <http://pubs.usgs.gov/of/2005/1325/>
- Cost to order the data: none

Data format:	Geologic units and structural features in format ARC/INFO export (version 9.0)
Network links:	<http://pubs.usgs.gov/of/2005/1325/>

Who wrote the metadata?

Dates:: Last modified: 12-Sep-2005
Metadata author:: U.S. Geological Survey
c/o Connie L. Dicken
12201 Sunrise Valley Dr. MS954
Reston, VA 20192
USA

703-648-6482 (voice)
cdicken@usgs.gov
Metadata standard:: Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <http://tin.er.usgs.gov/geology/state/metadata/pa.faq.html>

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Page Last Modified: Wednesday, 10-Sep-2008 16:26:08 EDT

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