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Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont

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• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
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What does this data set describe?

1. How should this data set be cited?

   Nicholson, Suzanne W. , Dicken, Connie L. , Horton, John D. , Foose, Michael P. , Mueller, Julia A.L. , and Hon, Rudi, 2006, Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont: U.S. Geological Survey Open-File Report 2006-1272, U.S. Geological Survey, Reston, VA.

   Online Links:

   • <http://pubs.usgs.gov/of/2006/1272>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -73.438402

   East_Bounding_Coordinate: -71.465176

   North_Bounding_Coordinate: 45.016616

   South_Bounding_Coordinate: 42.726850

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 2006

   Currentness_Reference: publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: map

6. 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.
      

7. How does the data set describe geographic features?

   VT_geol.pat

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

   ORIG_LABEL

   unmodified map unit symbol from source cover.

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

   Value	Definition
   Cbh	Bridgeman Hill Formation
   Cbr	Brezee Formation
   Cbrc	Brezee Formation, quartzose green phyllite
   Cc	Cheshire Quartzite
   ?Ccg	Cavendish Formation, Bull Hill Gneiss
   ?Ccm	Cavendish Formation, Dolomite and Marble
   ?Ccr	Cavendish Formation, Readsboro Member
   Ccs	Clarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
   Cd	Dunham Dolomite
   Cda	Danby and Potsdam Formations
   Cdt	Dalton Formation
   Cf	Forestdale Marble
   Ch	Hazens Notch Formation
   Chb	Hazens Notch Formation, Belvidere Mountain Amphibolite Member
   Chg	Hazens Notch Formation, Greenstone and Amphibolite
   Chm	Hazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
   Cho	Hoosac Formation
   Chog	Hoosac Formation, Amphibolite and Greenstone
   Chop	Hoosac Formation, Plymouth Member
   Cht	Hoosac Formation, Turkey Mountain Member
   Chw	Hatch Hill and West Castelton Formations, Undifferentiated
   Cm	Monkton Quartzite
   Cmo	Moosalamoo Phyllite
   Co	Ottauquechee Formation
   Cog	Ottauquechee Formation, Greenstone and Amphibolite
   Cp	Pinnacle Formation
   Cpa	Parker Slate
   Cpc	Pinney Hollow Formation, carbonaceous phyllite and schist
   Cpg	Pinney Hollow Formation, Greenstone
   Cpgc	Pinney Hollow Formation, Chester Amphibolite Member
   Cph	Pinney Hollow Formation
   Cpt	Pinnacle Formation, Tibbit Hill Volcanic Member
   Crb	Rugg Brook Formation
   Cs	Sweetsburg Formation
   Csa	Sweetsburg Formation, St. Albans Slate Member
   Csb	Saxe Brook Dolomite
   Csc	St. Catherine Formation
   Cscb	St. Catherine Formation, Bomoseen Graywacke Member
   Cscz	St. Catherine Formation, Zion Hill Quartzite Member
   Csh	Sweetsburg Formation, Hungerford Slate Member
   Csr	Sweetsburg Formation, Rockledge Conglomerate Member
   Cssm	Sweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
   Ct	Tyson Formation
   Cu	Underhill Formation
   Cua	Underhill Formation, Mount Abraham Schist Member
   Cub	Underhill Formation, Battell Member
   Cuc	Underhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
   Cuf	Underhill Formation, Forestdale Member
   Cufb	Underhill Formation, Foot Brook Member
   Cufp	Underhill Formation, Fairfield Pond Member
   Cug	Underhill Formation, Greenstone
   Cuj	Underhill Formation, Jay Peak Member
   Cup	Underhill Formation, Peaked Mountain Member
   Cuw	Underhill Formation, White Brook Member
   Cw	Winooski Dolomite
   Dg	Gile Mountain Formation
   Dga	Gile Mountain Formation, Amphibolite
   Dgh	Gile Mountain Formation, Hall Stream Member
   Dgm	Gile Mountain Formation, Meetinghouse Slate Member
   Dl	Littleton Formation
   DSn	Northfield Formation
   Dw	Waits River Formation
   Dwa	Waits River Formation, Ayers Cliff Member
   Dwb	Waits River Formation, Barton River Member
   Dwc	Waits River Formation, Crow Hill Member
   Dws	Waits River formation, Standing Pond Volcanic Member
   hu	Undifferentiated Granitic Rocks
   nhb	Bethlehem Gneiss
   nhd	Metadiorite
   nhu	Undifferentiated Granitic Gneiss
   Oa	Ammonoosuc Volcanics
   Oal	Albee Formation
   Ob	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
   Obb	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
   Oc	Cutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
   OCs	Stowe Formation
   OCsc	Stowe Formation, carbonaceous schist and phyllite
   OCsg	Stowe Formation, greenstone and amphibolite
   OCu	Pinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
   Ocb	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
   Ocbe	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
   Ocbr	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
   Och	Cumberland Head Formation
   Ocw	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
   Ogl	Glens Falls Formation, Larrabee Member
   Ogo	Glens Falls and Orwell Limestones, Undifferentiated
   Ogs	Glens Falls Formation, Shoreham Member
   Oh	Hortonville Formation
   Oha	Hathaway Formation
   Ohg	Hortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
   Ohi	Highgate Formation
   Oi	Iberville Formation
   Omb	Missisquoi Formation, Barnard Volcanic Member
   Omc	Missisquoi Formation
   Omco	Missisquoi Formation, Coburn Hill Volcanic Member
   Omcr	Missisquoi Formation, Cram Hill Member
   Omh	Mount Hamilton Formation
   Omhb	Missisquoi Formation, Harlow Bridge Quartzite Member
   Omi	Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
   Omic	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
   Omid	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
   Omiv	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
   Oml	Morses Line Formation
   Omm	Missisquoi Formation, Moretown Member
   Omu	Missisquoi Formation, Umbrella Hill Member
   Omw	Missisquoi Formation, Whetstone Hill Member
   Oo	Orwell Limestone and Isle la Motte and Lowville Limestones
   Oof	Orfordville Formation
   Oop	Orfordville Formation, Post Pond Volcanics
   Oor	Orwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
   Oos	Orfordville Formation, Sunday Mountain Volcanics
   Op	Partridge Formation
   Opa	Pawlet Formation
   Opv	Partridge Formation, Volcanics
   Os	Shelburne, Whitehall, and Strites Pond Formations
   Osp	Stony Point Formation
   ou	Biotite Quartz Diorite Gneiss
   pC	Mount Holly Complex
   pCg	Undifferentiated Gneiss
   pCgn	gneiss, quartzite, calc-silicate granulite
   pCm	Mount Holly Complex, calcite and dolomite marbles
   pCsg	Stamford Gneiss
   pCsq	Mount Holly Complex, quartzite and schist
   Sc	Clough Formation
   Sf	Fitch Formation
   Ss	Shaw Mountain Formation
   udp	Ultramafic Rocks
   us	Ultramafic Rocks
   uu	Ultramafic Rocks
   water	Water
   wd	Hornblende-biotite diorite; gabbro
   we	Essexitite
   wg	Granites
   wle	Bostonite
   wn	Nepheline Syenite and Pulaskite
   ws	Syenite
   wv	Volcanic breccia, felsitic tuff, and flows.

   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 (USGS))

   Value	Definition
   CAbh;0	Bridgeman Hill Formation
   CAbr;0	Brezee Formation
   CAbrc;0	Brezee Formation, quartzose green phyllite
   CAc;0	Cheshire Quartzite
   CAcg;0	Cavendish Formation, Bull Hill Gneiss
   CAcm;0	Cavendish Formation, Dolomite and Marble
   CAcr;0	Cavendish Formation, Readsboro Member
   CAcs;0	Clarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
   CAd;0	Dunham Dolomite
   CAda;0	Danby and Potsdam Formations
   CAdt;0	Dalton Formation
   CAf;0	Forestdale Marble
   CAh;0	Hazens Notch Formation
   CAhb;0	Hazens Notch Formation, Belvidere Mountain Amphibolite Member
   CAhg;0	Hazens Notch Formation, Greenstone and Amphibolite
   CAhm;0	Hazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
   CAho;0	Hoosac Formation
   CAhog;0	Hoosac Formation, Amphibolite and Greenstone
   CAhop;0	Hoosac Formation, Plymouth Member
   CAht;0	Hoosac Formation, Turkey Mountain Member
   CAhw;0	Hatch Hill and West Castelton Formations, Undifferentiated
   CAm;0	Monkton Quartzite
   CAmo;0	Moosalamoo Phyllite
   CAo;0	Ottauquechee Formation
   CAog;0	Ottauquechee Formation, Greenstone and Amphibolite
   CAp;0	Pinnacle Formation
   CApa;0	Parker Slate
   CApc;0	Pinney Hollow Formation, carbonaceous phyllite and schist
   CApg;0	Pinney Hollow Formation, Greenstone
   CApgc;0	Pinney Hollow Formation, Chester Amphibolite Member
   CAph;0	Pinney Hollow Formation
   CApt;0	Pinnacle Formation, Tibbit Hill Volcanic Member
   CArb;0	Rugg Brook Formation
   CAs;0	Sweetsburg Formation
   CAsa;0	Sweetsburg Formation, St. Albans Slate Member
   CAsb;0	Saxe Brook Dolomite
   CAsc;0	St. Catherine Formation
   CAscb;0	St. Catherine Formation, Bomoseen Graywacke Member
   CAscz;0	St. Catherine Formation, Zion Hill Quartzite Member
   CAsh;0	Sweetsburg Formation, Hungerford Slate Member
   CAsr;0	Sweetsburg Formation, Rockledge Conglomerate Member
   CAssm;0	Sweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
   CAt;0	Tyson Formation
   CAu;0	Underhill Formation
   CAua;0	Underhill Formation, Mount Abraham Schist Member
   CAub;0	Underhill Formation, Battell Member
   CAuc;0	Underhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
   CAuf;0	Underhill Formation, Forestdale Member
   CAufb;0	Underhill Formation, Foot Brook Member
   CAufp;0	Underhill Formation, Fairfield Pond Member
   CAug;0	Underhill Formation, Greenstone
   CAuj;0	Underhill Formation, Jay Peak Member
   CAup;0	Underhill Formation, Peaked Mountain Member
   CAuw;0	Underhill Formation, White Brook Member
   CAw;0	Winooski Dolomite
   Dg;0	Gile Mountain Formation
   Dga;0	Gile Mountain Formation, Amphibolite
   Dgh;0	Gile Mountain Formation, Hall Stream Member
   Dgm;0	Gile Mountain Formation, Meetinghouse Slate Member
   Dl;0	Littleton Formation
   DSn;0	Northfield Formation
   Dw;0	Waits River Formation
   Dwa;0	Waits River Formation, Ayers Cliff Member
   Dwb;0	Waits River Formation, Barton River Member
   Dwc;0	Waits River Formation, Crow Hill Member
   Dws;0	Waits River formation, Standing Pond Volcanic Member
   hu;0	Undifferentiated Granitic Rocks
   nhb;0	Bethlehem Gneiss
   nhd;0	Metadiorite
   nhu;0	Undifferentiated Granitic Gneiss
   Oa;1	Ammonoosuc Volcanics
   Oa;2	Ammonoosuc Volcanics
   Oal;0	Albee Formation
   Ob;0	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
   Obb;0	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
   Oc;0	Cutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
   OCAs;0	Stowe Formation
   OCAsc;0	Stowe Formation, carbonaceous schist and phyllite
   OCAsg;0	Stowe Formation, greenstone and amphibolite
   OCAu;0	Pinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
   Ocb;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
   Ocbe;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
   Ocbr;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
   Och;0	Cumberland Head Formation
   Ocw;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
   Ogl;0	Glens Falls Formation, Larrabee Member
   Ogo;0	Glens Falls and Orwell Limestones, Undifferentiated
   Ogs;0	Glens Falls Formation, Shoreham Member
   Oh;0	Hortonville Formation
   Oha;0	Hathaway Formation
   Ohg;0	Hortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
   Ohi;0	Highgate Formation
   Oi;0	Iberville Formation
   Omb;0	Missisquoi Formation, Barnard Volcanic Member
   Omc;1	Missisquoi Formation
   Omc;2	Missisquoi Formation
   Omco;2	Missisquoi Formation, Coburn Hill Volcanic Member
   Omcr;2	Missisquoi Formation, Cram Hill Member
   Omh;0	Mount Hamilton Formation
   Omhb;2	Missisquoi Formation, Harlow Bridge Quartzite Member
   Omi;0	Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
   Omic;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
   Omid;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
   Omiv;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
   Oml;0	Morses Line Formation
   Omm;0	Missisquoi Formation, Moretown Member
   Omu;2	Missisquoi Formation, Umbrella Hill Member
   Omw;1	Missisquoi Formation, Whetstone Hill Member
   Oo;0	Orwell Limestone and Isle la Motte and Lowville Limestones
   Oof;0	Orfordville Formation
   Oop;0	Orfordville Formation, Post Pond Volcanics
   Oor;0	Orwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
   Oos;0	Orfordville Formation, Sunday Mountain Volcanics
   Op;1	Partridge Formation
   Op;2	Partridge Formation
   Opa;0	Pawlet Formation
   Opv;1	Partridge Formation, Volcanics
   Os;0	Shelburne, Whitehall, and Strites Pond Formations
   Osp;0	Stony Point Formation
   ou;0	Biotite Quartz Diorite Gneiss
   pCA;0	Mount Holly Complex
   pCAg;0	Undifferentiated Gneiss
   pCAgn;0	gneiss, quartzite, calc-silicate granulite
   pCAm;0	Mount Holly Complex, calcite and dolomite marbles
   pCAsg;0	Stamford Gneiss
   pCAsq;0	Mount Holly Complex, quartzite and schist
   Sc;1	Clough Formation
   Sc;2	Clough Formation
   Sf;1	Fitch Formation
   Sf;2	Fitch Formation
   Ss;1	Shaw Mountain Formation
   Ss;2	Shaw Mountain Formation
   udp;0	Ultramafic Rocks
   us;0	Ultramafic Rocks
   uu;0	Ultramafic Rocks
   water;0	Water
   wd;0	Hornblende-biotite diorite; gabbro
   we;0	Essexitite
   wg;0	Granites
   wle;0	Bostonite
   wn;0	Nepheline Syenite and Pulaskite
   ws;0	Syenite
   wv;0	Volcanic breccia, felsitic tuff, and flows.

   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 (USGS))

   Value	Definition
   VTCAbh;0	Bridgeman Hill Formation
   VTCAbr;0	Brezee Formation
   VTCAbrc;0	Brezee Formation, quartzose green phyllite
   VTCAc;0	Cheshire Quartzite
   VTCAcg;0	Cavendish Formation, Bull Hill Gneiss
   VTCAcm;0	Cavendish Formation, Dolomite and Marble
   VTCAcr;0	Cavendish Formation, Readsboro Member
   VTCAcs;0	Clarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
   VTCAd;0	Dunham Dolomite
   VTCAda;0	Danby and Potsdam Formations
   VTCAdt;0	Dalton Formation
   VTCAf;0	Forestdale Marble
   VTCAh;0	Hazens Notch Formation
   VTCAhb;0	Hazens Notch Formation, Belvidere Mountain Amphibolite Member
   VTCAhg;0	Hazens Notch Formation, Greenstone and Amphibolite
   VTCAhm;0	Hazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
   VTCAho;0	Hoosac Formation
   VTCAhog;0	Hoosac Formation, Amphibolite and Greenstone
   VTCAhop;0	Hoosac Formation, Plymouth Member
   VTCAht;0	Hoosac Formation, Turkey Mountain Member
   VTCAhw;0	Hatch Hill and West Castelton Formations, Undifferentiated
   VTCAm;0	Monkton Quartzite
   VTCAmo;0	Moosalamoo Phyllite
   VTCAo;0	Ottauquechee Formation
   VTCAog;0	Ottauquechee Formation, Greenstone and Amphibolite
   VTCAp;0	Pinnacle Formation
   VTCApa;0	Parker Slate
   VTCApc;0	Pinney Hollow Formation, carbonaceous phyllite and schist
   VTCApg;0	Pinney Hollow Formation, Greenstone
   VTCApgc;0	Pinney Hollow Formation, Chester Amphibolite Member
   VTCAph;0	Pinney Hollow Formation
   VTCApt;0	Pinnacle Formation, Tibbit Hill Volcanic Member
   VTCArb;0	Rugg Brook Formation
   VTCAs;0	Sweetsburg Formation
   VTCAsa;0	Sweetsburg Formation, St. Albans Slate Member
   VTCAsb;0	Saxe Brook Dolomite
   VTCAsc;0	St. Catherine Formation
   VTCAscb;0	St. Catherine Formation, Bomoseen Graywacke Member
   VTCAscz;0	St. Catherine Formation, Zion Hill Quartzite Member
   VTCAsh;0	Sweetsburg Formation, Hungerford Slate Member
   VTCAsr;0	Sweetsburg Formation, Rockledge Conglomerate Member
   VTCAssm;0	Sweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
   VTCAt;0	Tyson Formation
   VTCAu;0	Underhill Formation
   VTCAua;0	Underhill Formation, Mount Abraham Schist Member
   VTCAub;0	Underhill Formation, Battell Member
   VTCAuc;0	Underhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
   VTCAuf;0	Underhill Formation, Forestdale Member
   VTCAufb;0	Underhill Formation, Foot Brook Member
   VTCAufp;0	Underhill Formation, Fairfield Pond Member
   VTCAug;0	Underhill Formation, Greenstone
   VTCAuj;0	Underhill Formation, Jay Peak Member
   VTCAup;0	Underhill Formation, Peaked Mountain Member
   VTCAuw;0	Underhill Formation, White Brook Member
   VTCAw;0	Winooski Dolomite
   VTDg;0	Gile Mountain Formation
   VTDga;0	Gile Mountain Formation, Amphibolite
   VTDgh;0	Gile Mountain Formation, Hall Stream Member
   VTDgm;0	Gile Mountain Formation, Meetinghouse Slate Member
   VTDl;0	Littleton Formation
   VTDSn;0	Northfield Formation
   VTDw;0	Waits River Formation
   VTDwa;0	Waits River Formation, Ayers Cliff Member
   VTDwb;0	Waits River Formation, Barton River Member
   VTDwc;0	Waits River Formation, Crow Hill Member
   VTDws;0	Waits River formation, Standing Pond Volcanic Member
   VThu;0	Undifferentiated Granitic Rocks
   VTnhb;0	Bethlehem Gneiss
   VTnhd;0	Metadiorite
   VTnhu;0	Undifferentiated Granitic Gneiss
   VTOa;1	Ammonoosuc Volcanics
   VTOa;2	Ammonoosuc Volcanics
   VTOal;0	Albee Formation
   VTOb;0	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
   VTObb;0	Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
   VTOc;0	Cutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
   VTOCAs;0	Stowe Formation
   VTOCAsc;0	Stowe Formation, carbonaceous schist and phyllite
   VTOCAsg;0	Stowe Formation, greenstone and amphibolite
   VTOCAu;0	Pinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
   VTOcb;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
   VTOcbe;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
   VTOcbr;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
   VTOch;0	Cumberland Head Formation
   VTOcw;0	Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
   VTOgl;0	Glens Falls Formation, Larrabee Member
   VTOgo;0	Glens Falls and Orwell Limestones, Undifferentiated
   VTOgs;0	Glens Falls Formation, Shoreham Member
   VTOh;0	Hortonville Formation
   VTOha;0	Hathaway Formation
   VTOhg;0	Hortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
   VTOhi;0	Highgate Formation
   VTOi;0	Iberville Formation
   VTOmb;0	Missisquoi Formation, Barnard Volcanic Member
   VTOmc;1	Missisquoi Formation
   VTOmc;2	Missisquoi Formation
   VTOmco;2	Missisquoi Formation, Coburn Hill Volcanic Member
   VTOmcr;2	Missisquoi Formation, Cram Hill Member
   VTOmh;0	Mount Hamilton Formation
   VTOmhb;2	Missisquoi Formation, Harlow Bridge Quartzite Member
   VTOmi;0	Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
   VTOmic;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
   VTOmid;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
   VTOmiv;0	Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
   VTOml;0	Morses Line Formation
   VTOmm;0	Missisquoi Formation, Moretown Member
   VTOmu;2	Missisquoi Formation, Umbrella Hill Member
   VTOmw;1	Missisquoi Formation, Whetstone Hill Member
   VTOo;0	Orwell Limestone and Isle la Motte and Lowville Limestones
   VTOof;0	Orfordville Formation
   VTOop;0	Orfordville Formation, Post Pond Volcanics
   VTOor;0	Orwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
   VTOos;0	Orfordville Formation, Sunday Mountain Volcanics
   VTOp;1	Partridge Formation
   VTOp;2	Partridge Formation
   VTOpa;0	Pawlet Formation
   VTOpv;1	Partridge Formation, Volcanics
   VTOs;0	Shelburne, Whitehall, and Strites Pond Formations
   VTOsp;0	Stony Point Formation
   VTou;0	Biotite Quartz Diorite Gneiss
   VTpCA;0	Mount Holly Complex
   VTpCAg;0	Undifferentiated Gneiss
   VTpCAgn;0	gneiss, quartzite, calc-silicate granulite
   VTpCAm;0	Mount Holly Complex, calcite and dolomite marbles
   VTpCAsg;0	Stamford Gneiss
   VTpCAsq;0	Mount Holly Complex, quartzite and schist
   VTSc;1	Clough Formation
   VTSc;2	Clough Formation
   VTSf;1	Fitch Formation
   VTSf;2	Fitch Formation
   VTSs;1	Shaw Mountain Formation
   VTSs;2	Shaw Mountain Formation
   VTudp;0	Ultramafic Rocks
   VTus;0	Ultramafic Rocks
   VTuu;0	Ultramafic Rocks
   VTwater;0	Water
   VTwd;0	Hornblende-biotite diorite; gabbro
   VTwe;0	Essexitite
   VTwg;0	Granites
   VTwle;0	Bostonite
   VTwn;0	Nepheline Syenite and Pulaskite
   VTws;0	Syenite
   VTwv;0	Volcanic breccia, felsitic tuff, and flows.

   source

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

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

   Value	Definition
   VT001	Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.

   unit_age

   The geologic age from the source map used.

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

   Value	Definition
   Cambrian
   Cambrian?
   Cambrian-Ordovician
   Devonian
   Devonian - Silurian
   Holocene
   Ordovician
   Permian-Triassic
   Precambrian
   Silurian

   rocktype1

   The predominant lithology found in the formation.

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

   Value	Definition
   amphibolite
   argillite
   arkose
   biotite gneiss
   black shale
   calcarenite
   conglomerate
   diorite
   dolostone (dolomite)
   dunite
   gabbro
   gneiss
   granite
   granitic gneiss
   granulite
   greenstone
   limestone
   marble
   metavolcanic rock
   mica schist
   nepheline syenite
   phyllite
   quartzite
   sandstone
   schist
   serpentinite
   shale
   slate
   syenite
   trachyte
   ultramafic intrusive rock
   volcanic breccia (agglomerate)
   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
   amphibole schist
   amphibolite
   biotite gneiss
   calcarenite
   chert
   conglomerate
   dolostone (dolomite)
   gabbro
   granulite
   graywacke
   greenschist
   greenstone
   intrusive carbonatite
   lamprophyre
   limestone
   mafic gneiss
   marble
   mica schist
   peridotite
   phyllite
   quartz monzonite
   quartz syenite
   quartzite
   sandstone
   schist
   shale
   slate
   tuff

   VT_geol.aat

   Arc attribute table for Vermont 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
   3	contact, location inferred, queried
   4	normal fault, location certain, digitized with upthrown side on the right (code of 1 added to arc-para1 where U/D is designated in source)
   6	normal fault, location inferred, queried, digitized with upthrown side on the right (code of 1 added to arc-para1 where U/D is designated in source)
   7	shoreline or riverbank
   10	thrust fault, location certain, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
   11	thrust fault, location approximate, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
   12	thrust fault, location inferred, queried, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
   30	fault, sense of displacement unknown or undefined, location certain
   32	fault, sense of displacement unknown or undefined, location inferred or queried
   35	high-angle reverse fault, location certain, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
   37	high-angle reverse fault, location inferred, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
   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
   1	U/D designated in source

   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
   VT001	Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
   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, CONUSdocumentationNENJ.pdf)

   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?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Suzanne W. Nicholson
   • Connie L. Dicken
   • John D. Horton
   • Michael P. Foose
   • Julia A.L. Mueller
   • Rudi Hon

2. 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.

3. 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 CONUSdocumentationNENJ.pdf of this series. 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 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?

1. From what previous works were the data drawn?

   vt geol (source 1 of 3)

   Dicken, Connie L. , unpublished, Digital Geological Map of Vermont: A digital representation of the 1961 Doll and others map.: unpublished, unpublished.

   Online Links:

   • none

   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.

2. How were the data generated, processed, and modified?

   Date: 2003 (process 1 of 10)

   The purpose of this standardization is to allow all SGMC 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 (USGS) and Ric Wilson (USGS) are co-coordinators for the overall SGMC effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii.

   Date: 01-Jun-2006 (process 2 of 10)

   C.L. Dicken obtained a digital scanned version of the 1961 Geologic Map of Vermont from Doug Stoeser. The map was geoferenced in ArcGIS and digitzed to create an unaltered digital geologic map of Vermont. Once the map was digitized with lines coded and labels added, it was converted into a coverage in Arc/INFO and topology was built. 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

   (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 polygon coverage contained one attribute called orig_label.

   Date: 21-Aug-2006 (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: 21-Aug-2006 (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

   unit_link is an auto generated field based on map-symbol2 and the state abbreviation (e.g. VT001) 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.

   unit_age was populated with general age assignment

   rocktype1 records dominant lithology (does not imply minimum percentage of abundance), 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: 2006 (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: 21-Aug-2006 (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: 21-Aug-2006 (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 CONUSdocumentationNENJ.pdf in this series).

   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 CONUSdocumentationNENJ.pdf)

   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: 25-Aug-2006 (process 8 of 10)

   Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (VTgeol_lcc.e00).

   Then it was unprojected into geographic coordinates and exported again (VTgeol_dd.e00).

   Date: 2006 (process 9 of 10)

   Faults were extracted from the coverage and created a separate fault coverage (VTfaults_lcc) and then exported (VTfaults_lcc.e00).

   Date: 25-Aug-2006 (process 10 of 10)

   Finally, the geology lines, geology polygons and faults were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection.

3. What similar or related data should the user be aware of?

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

1. 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://geology.usgs.gov/dm>

2. How accurate are the geographic locations?

   Accuracy of Vermont 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 (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf))

   Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error.

3. How accurate are the heights or depths?

4. 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.

5. 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.

1. 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/>
   

2. What's the catalog number I need to order this data set?

3. 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.

4. 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/2006/1272/>

   • Cost to order the data: none

Who wrote the metadata?

Dates:

Last modified: 25-Aug-2006

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)