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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?

Title:
Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont
Abstract:
These metadata are specifically for the State of Vermont, one state in the national compilation of state geologic map databases. The digital geologic state map data was prepared by the USGS in cooperation with the Vermont Geological Survey in 2006. Review of the spatial data by the Vermont Geological Survey is on-going. Subsequent editing of the spatial data by the USGS was limited to fitting a standardized state boundary to the data, standardizing the arc coding, reprojecting the data, and minor edits of arc or polygon attributes to conform with the paper map. This open-file report is one of several that present the preliminary results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources of 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 in regional blocks 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 and preview graphics 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 CONUSdocumentationNENJ.pdf, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii.
Supplemental_Information:
This database consists of up to 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).
  1. How might 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:

  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: 2006Currentness_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))
    ValueDefinition
    CbhBridgeman Hill Formation
    CbrBrezee Formation
    CbrcBrezee Formation, quartzose green phyllite
    CcCheshire Quartzite
    ?CcgCavendish Formation, Bull Hill Gneiss
    ?CcmCavendish Formation, Dolomite and Marble
    ?CcrCavendish Formation, Readsboro Member
    CcsClarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
    CdDunham Dolomite
    CdaDanby and Potsdam Formations
    CdtDalton Formation
    CfForestdale Marble
    ChHazens Notch Formation
    ChbHazens Notch Formation, Belvidere Mountain Amphibolite Member
    ChgHazens Notch Formation, Greenstone and Amphibolite
    ChmHazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
    ChoHoosac Formation
    ChogHoosac Formation, Amphibolite and Greenstone
    ChopHoosac Formation, Plymouth Member
    ChtHoosac Formation, Turkey Mountain Member
    ChwHatch Hill and West Castelton Formations, Undifferentiated
    CmMonkton Quartzite
    CmoMoosalamoo Phyllite
    CoOttauquechee Formation
    CogOttauquechee Formation, Greenstone and Amphibolite
    CpPinnacle Formation
    CpaParker Slate
    CpcPinney Hollow Formation, carbonaceous phyllite and schist
    CpgPinney Hollow Formation, Greenstone
    CpgcPinney Hollow Formation, Chester Amphibolite Member
    CphPinney Hollow Formation
    CptPinnacle Formation, Tibbit Hill Volcanic Member
    CrbRugg Brook Formation
    CsSweetsburg Formation
    CsaSweetsburg Formation, St. Albans Slate Member
    CsbSaxe Brook Dolomite
    CscSt. Catherine Formation
    CscbSt. Catherine Formation, Bomoseen Graywacke Member
    CsczSt. Catherine Formation, Zion Hill Quartzite Member
    CshSweetsburg Formation, Hungerford Slate Member
    CsrSweetsburg Formation, Rockledge Conglomerate Member
    CssmSweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
    CtTyson Formation
    CuUnderhill Formation
    CuaUnderhill Formation, Mount Abraham Schist Member
    CubUnderhill Formation, Battell Member
    CucUnderhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
    CufUnderhill Formation, Forestdale Member
    CufbUnderhill Formation, Foot Brook Member
    CufpUnderhill Formation, Fairfield Pond Member
    CugUnderhill Formation, Greenstone
    CujUnderhill Formation, Jay Peak Member
    CupUnderhill Formation, Peaked Mountain Member
    CuwUnderhill Formation, White Brook Member
    CwWinooski Dolomite
    DgGile Mountain Formation
    DgaGile Mountain Formation, Amphibolite
    DghGile Mountain Formation, Hall Stream Member
    DgmGile Mountain Formation, Meetinghouse Slate Member
    DlLittleton Formation
    DSnNorthfield Formation
    DwWaits River Formation
    DwaWaits River Formation, Ayers Cliff Member
    DwbWaits River Formation, Barton River Member
    DwcWaits River Formation, Crow Hill Member
    DwsWaits River formation, Standing Pond Volcanic Member
    huUndifferentiated Granitic Rocks
    nhbBethlehem Gneiss
    nhdMetadiorite
    nhuUndifferentiated Granitic Gneiss
    OaAmmonoosuc Volcanics
    OalAlbee Formation
    ObBascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
    ObbBascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
    OcCutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
    OCsStowe Formation
    OCscStowe Formation, carbonaceous schist and phyllite
    OCsgStowe Formation, greenstone and amphibolite
    OCuPinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
    OcbChipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
    OcbeChipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
    OcbrChipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
    OchCumberland Head Formation
    OcwChipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
    OglGlens Falls Formation, Larrabee Member
    OgoGlens Falls and Orwell Limestones, Undifferentiated
    OgsGlens Falls Formation, Shoreham Member
    OhHortonville Formation
    OhaHathaway Formation
    OhgHortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
    OhiHighgate Formation
    OiIberville Formation
    OmbMissisquoi Formation, Barnard Volcanic Member
    OmcMissisquoi Formation
    OmcoMissisquoi Formation, Coburn Hill Volcanic Member
    OmcrMissisquoi Formation, Cram Hill Member
    OmhMount Hamilton Formation
    OmhbMissisquoi Formation, Harlow Bridge Quartzite Member
    OmiMiddlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
    OmicMiddlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
    OmidMiddlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
    OmivMiddlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
    OmlMorses Line Formation
    OmmMissisquoi Formation, Moretown Member
    OmuMissisquoi Formation, Umbrella Hill Member
    OmwMissisquoi Formation, Whetstone Hill Member
    OoOrwell Limestone and Isle la Motte and Lowville Limestones
    OofOrfordville Formation
    OopOrfordville Formation, Post Pond Volcanics
    OorOrwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
    OosOrfordville Formation, Sunday Mountain Volcanics
    OpPartridge Formation
    OpaPawlet Formation
    OpvPartridge Formation, Volcanics
    OsShelburne, Whitehall, and Strites Pond Formations
    OspStony Point Formation
    ouBiotite Quartz Diorite Gneiss
    pCMount Holly Complex
    pCgUndifferentiated Gneiss
    pCgngneiss, quartzite, calc-silicate granulite
    pCmMount Holly Complex, calcite and dolomite marbles
    pCsgStamford Gneiss
    pCsqMount Holly Complex, quartzite and schist
    ScClough Formation
    SfFitch Formation
    SsShaw Mountain Formation
    udpUltramafic Rocks
    usUltramafic Rocks
    uuUltramafic Rocks
    waterWater
    wdHornblende-biotite diorite; gabbro
    weEssexitite
    wgGranites
    wleBostonite
    wnNepheline Syenite and Pulaskite
    wsSyenite
    wvVolcanic 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))
    ValueDefinition
    CAbh;0Bridgeman Hill Formation
    CAbr;0Brezee Formation
    CAbrc;0Brezee Formation, quartzose green phyllite
    CAc;0Cheshire Quartzite
    CAcg;0Cavendish Formation, Bull Hill Gneiss
    CAcm;0Cavendish Formation, Dolomite and Marble
    CAcr;0Cavendish Formation, Readsboro Member
    CAcs;0Clarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
    CAd;0Dunham Dolomite
    CAda;0Danby and Potsdam Formations
    CAdt;0Dalton Formation
    CAf;0Forestdale Marble
    CAh;0Hazens Notch Formation
    CAhb;0Hazens Notch Formation, Belvidere Mountain Amphibolite Member
    CAhg;0Hazens Notch Formation, Greenstone and Amphibolite
    CAhm;0Hazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
    CAho;0Hoosac Formation
    CAhog;0Hoosac Formation, Amphibolite and Greenstone
    CAhop;0Hoosac Formation, Plymouth Member
    CAht;0Hoosac Formation, Turkey Mountain Member
    CAhw;0Hatch Hill and West Castelton Formations, Undifferentiated
    CAm;0Monkton Quartzite
    CAmo;0Moosalamoo Phyllite
    CAo;0Ottauquechee Formation
    CAog;0Ottauquechee Formation, Greenstone and Amphibolite
    CAp;0Pinnacle Formation
    CApa;0Parker Slate
    CApc;0Pinney Hollow Formation, carbonaceous phyllite and schist
    CApg;0Pinney Hollow Formation, Greenstone
    CApgc;0Pinney Hollow Formation, Chester Amphibolite Member
    CAph;0Pinney Hollow Formation
    CApt;0Pinnacle Formation, Tibbit Hill Volcanic Member
    CArb;0Rugg Brook Formation
    CAs;0Sweetsburg Formation
    CAsa;0Sweetsburg Formation, St. Albans Slate Member
    CAsb;0Saxe Brook Dolomite
    CAsc;0St. Catherine Formation
    CAscb;0St. Catherine Formation, Bomoseen Graywacke Member
    CAscz;0St. Catherine Formation, Zion Hill Quartzite Member
    CAsh;0Sweetsburg Formation, Hungerford Slate Member
    CAsr;0Sweetsburg Formation, Rockledge Conglomerate Member
    CAssm;0Sweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
    CAt;0Tyson Formation
    CAu;0Underhill Formation
    CAua;0Underhill Formation, Mount Abraham Schist Member
    CAub;0Underhill Formation, Battell Member
    CAuc;0Underhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
    CAuf;0Underhill Formation, Forestdale Member
    CAufb;0Underhill Formation, Foot Brook Member
    CAufp;0Underhill Formation, Fairfield Pond Member
    CAug;0Underhill Formation, Greenstone
    CAuj;0Underhill Formation, Jay Peak Member
    CAup;0Underhill Formation, Peaked Mountain Member
    CAuw;0Underhill Formation, White Brook Member
    CAw;0Winooski Dolomite
    Dg;0Gile Mountain Formation
    Dga;0Gile Mountain Formation, Amphibolite
    Dgh;0Gile Mountain Formation, Hall Stream Member
    Dgm;0Gile Mountain Formation, Meetinghouse Slate Member
    Dl;0Littleton Formation
    DSn;0Northfield Formation
    Dw;0Waits River Formation
    Dwa;0Waits River Formation, Ayers Cliff Member
    Dwb;0Waits River Formation, Barton River Member
    Dwc;0Waits River Formation, Crow Hill Member
    Dws;0Waits River formation, Standing Pond Volcanic Member
    hu;0Undifferentiated Granitic Rocks
    nhb;0Bethlehem Gneiss
    nhd;0Metadiorite
    nhu;0Undifferentiated Granitic Gneiss
    Oa;1Ammonoosuc Volcanics
    Oa;2Ammonoosuc Volcanics
    Oal;0Albee Formation
    Ob;0Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
    Obb;0Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
    Oc;0Cutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
    OCAs;0Stowe Formation
    OCAsc;0Stowe Formation, carbonaceous schist and phyllite
    OCAsg;0Stowe Formation, greenstone and amphibolite
    OCAu;0Pinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
    Ocb;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
    Ocbe;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
    Ocbr;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
    Och;0Cumberland Head Formation
    Ocw;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
    Ogl;0Glens Falls Formation, Larrabee Member
    Ogo;0Glens Falls and Orwell Limestones, Undifferentiated
    Ogs;0Glens Falls Formation, Shoreham Member
    Oh;0Hortonville Formation
    Oha;0Hathaway Formation
    Ohg;0Hortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
    Ohi;0Highgate Formation
    Oi;0Iberville Formation
    Omb;0Missisquoi Formation, Barnard Volcanic Member
    Omc;1Missisquoi Formation
    Omc;2Missisquoi Formation
    Omco;2Missisquoi Formation, Coburn Hill Volcanic Member
    Omcr;2Missisquoi Formation, Cram Hill Member
    Omh;0Mount Hamilton Formation
    Omhb;2Missisquoi Formation, Harlow Bridge Quartzite Member
    Omi;0Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
    Omic;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
    Omid;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
    Omiv;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
    Oml;0Morses Line Formation
    Omm;0Missisquoi Formation, Moretown Member
    Omu;2Missisquoi Formation, Umbrella Hill Member
    Omw;1Missisquoi Formation, Whetstone Hill Member
    Oo;0Orwell Limestone and Isle la Motte and Lowville Limestones
    Oof;0Orfordville Formation
    Oop;0Orfordville Formation, Post Pond Volcanics
    Oor;0Orwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
    Oos;0Orfordville Formation, Sunday Mountain Volcanics
    Op;1Partridge Formation
    Op;2Partridge Formation
    Opa;0Pawlet Formation
    Opv;1Partridge Formation, Volcanics
    Os;0Shelburne, Whitehall, and Strites Pond Formations
    Osp;0Stony Point Formation
    ou;0Biotite Quartz Diorite Gneiss
    pCA;0Mount Holly Complex
    pCAg;0Undifferentiated Gneiss
    pCAgn;0gneiss, quartzite, calc-silicate granulite
    pCAm;0Mount Holly Complex, calcite and dolomite marbles
    pCAsg;0Stamford Gneiss
    pCAsq;0Mount Holly Complex, quartzite and schist
    Sc;1Clough Formation
    Sc;2Clough Formation
    Sf;1Fitch Formation
    Sf;2Fitch Formation
    Ss;1Shaw Mountain Formation
    Ss;2Shaw Mountain Formation
    udp;0Ultramafic Rocks
    us;0Ultramafic Rocks
    uu;0Ultramafic Rocks
    water;0Water
    wd;0Hornblende-biotite diorite; gabbro
    we;0Essexitite
    wg;0Granites
    wle;0Bostonite
    wn;0Nepheline Syenite and Pulaskite
    ws;0Syenite
    wv;0Volcanic 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))
    ValueDefinition
    VTCAbh;0Bridgeman Hill Formation
    VTCAbr;0Brezee Formation
    VTCAbrc;0Brezee Formation, quartzose green phyllite
    VTCAc;0Cheshire Quartzite
    VTCAcg;0Cavendish Formation, Bull Hill Gneiss
    VTCAcm;0Cavendish Formation, Dolomite and Marble
    VTCAcr;0Cavendish Formation, Readsboro Member
    VTCAcs;0Clarendon Springs, Ticonderoga, and Rock River Dolomites; Gorge Formation
    VTCAd;0Dunham Dolomite
    VTCAda;0Danby and Potsdam Formations
    VTCAdt;0Dalton Formation
    VTCAf;0Forestdale Marble
    VTCAh;0Hazens Notch Formation
    VTCAhb;0Hazens Notch Formation, Belvidere Mountain Amphibolite Member
    VTCAhg;0Hazens Notch Formation, Greenstone and Amphibolite
    VTCAhm;0Hazens Notch Formation, sericite-quartz-chlorite-albite-magnetite schist
    VTCAho;0Hoosac Formation
    VTCAhog;0Hoosac Formation, Amphibolite and Greenstone
    VTCAhop;0Hoosac Formation, Plymouth Member
    VTCAht;0Hoosac Formation, Turkey Mountain Member
    VTCAhw;0Hatch Hill and West Castelton Formations, Undifferentiated
    VTCAm;0Monkton Quartzite
    VTCAmo;0Moosalamoo Phyllite
    VTCAo;0Ottauquechee Formation
    VTCAog;0Ottauquechee Formation, Greenstone and Amphibolite
    VTCAp;0Pinnacle Formation
    VTCApa;0Parker Slate
    VTCApc;0Pinney Hollow Formation, carbonaceous phyllite and schist
    VTCApg;0Pinney Hollow Formation, Greenstone
    VTCApgc;0Pinney Hollow Formation, Chester Amphibolite Member
    VTCAph;0Pinney Hollow Formation
    VTCApt;0Pinnacle Formation, Tibbit Hill Volcanic Member
    VTCArb;0Rugg Brook Formation
    VTCAs;0Sweetsburg Formation
    VTCAsa;0Sweetsburg Formation, St. Albans Slate Member
    VTCAsb;0Saxe Brook Dolomite
    VTCAsc;0St. Catherine Formation
    VTCAscb;0St. Catherine Formation, Bomoseen Graywacke Member
    VTCAscz;0St. Catherine Formation, Zion Hill Quartzite Member
    VTCAsh;0Sweetsburg Formation, Hungerford Slate Member
    VTCAsr;0Sweetsburg Formation, Rockledge Conglomerate Member
    VTCAssm;0Sweetsburg Formation, Skeels Corners Slate and Mill River Conglomerate Members Undifferentiated
    VTCAt;0Tyson Formation
    VTCAu;0Underhill Formation
    VTCAua;0Underhill Formation, Mount Abraham Schist Member
    VTCAub;0Underhill Formation, Battell Member
    VTCAuc;0Underhill Formation, carbonaceous quartz-sericite-albite-chlorite schist and phyllite.
    VTCAuf;0Underhill Formation, Forestdale Member
    VTCAufb;0Underhill Formation, Foot Brook Member
    VTCAufp;0Underhill Formation, Fairfield Pond Member
    VTCAug;0Underhill Formation, Greenstone
    VTCAuj;0Underhill Formation, Jay Peak Member
    VTCAup;0Underhill Formation, Peaked Mountain Member
    VTCAuw;0Underhill Formation, White Brook Member
    VTCAw;0Winooski Dolomite
    VTDg;0Gile Mountain Formation
    VTDga;0Gile Mountain Formation, Amphibolite
    VTDgh;0Gile Mountain Formation, Hall Stream Member
    VTDgm;0Gile Mountain Formation, Meetinghouse Slate Member
    VTDl;0Littleton Formation
    VTDSn;0Northfield Formation
    VTDw;0Waits River Formation
    VTDwa;0Waits River Formation, Ayers Cliff Member
    VTDwb;0Waits River Formation, Barton River Member
    VTDwc;0Waits River Formation, Crow Hill Member
    VTDws;0Waits River formation, Standing Pond Volcanic Member
    VThu;0Undifferentiated Granitic Rocks
    VTnhb;0Bethlehem Gneiss
    VTnhd;0Metadiorite
    VTnhu;0Undifferentiated Granitic Gneiss
    VTOa;1Ammonoosuc Volcanics
    VTOa;2Ammonoosuc Volcanics
    VTOal;0Albee Formation
    VTOb;0Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones
    VTObb;0Bascom Formation, and undifferentiated Luke Hill, Naylor Ledge and Hastings Creek Limestones; Brownell Mountain Phyllite Member
    VTOc;0Cutting Dolomite, and Undifferentiated Morgan Corner and Wallace Creek Formations
    VTOCAs;0Stowe Formation
    VTOCAsc;0Stowe Formation, carbonaceous schist and phyllite
    VTOCAsg;0Stowe Formation, greenstone and amphibolite
    VTOCAu;0Pinney Hollow Formation, Ottauquechee, and Stowe Formations, Undifferentiated
    VTOcb;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Burchards Member
    VTOcbe;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Beldens Member
    VTOcbr;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Bridport Dolomite Member
    VTOch;0Cumberland Head Formation
    VTOcw;0Chipman, Bridport, and Beldens Formations, Providence Island Dolomite; Weybridge Member
    VTOgl;0Glens Falls Formation, Larrabee Member
    VTOgo;0Glens Falls and Orwell Limestones, Undifferentiated
    VTOgs;0Glens Falls Formation, Shoreham Member
    VTOh;0Hortonville Formation
    VTOha;0Hathaway Formation
    VTOhg;0Hortonville, or Cumberland Head, and Glens Falls Formations, Undifferentiated
    VTOhi;0Highgate Formation
    VTOi;0Iberville Formation
    VTOmb;0Missisquoi Formation, Barnard Volcanic Member
    VTOmc;1Missisquoi Formation
    VTOmc;2Missisquoi Formation
    VTOmco;2Missisquoi Formation, Coburn Hill Volcanic Member
    VTOmcr;2Missisquoi Formation, Cram Hill Member
    VTOmh;0Mount Hamilton Formation
    VTOmhb;2Missisquoi Formation, Harlow Bridge Quartzite Member
    VTOmi;0Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
    VTOmic;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Crown Point Member
    VTOmid;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Day Point Member
    VTOmiv;0Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
    VTOml;0Morses Line Formation
    VTOmm;0Missisquoi Formation, Moretown Member
    VTOmu;2Missisquoi Formation, Umbrella Hill Member
    VTOmw;1Missisquoi Formation, Whetstone Hill Member
    VTOo;0Orwell Limestone and Isle la Motte and Lowville Limestones
    VTOof;0Orfordville Formation
    VTOop;0Orfordville Formation, Post Pond Volcanics
    VTOor;0Orwell Limestone, Isle la Motte and Lowville Limestones; Root Pond quartzite member
    VTOos;0Orfordville Formation, Sunday Mountain Volcanics
    VTOp;1Partridge Formation
    VTOp;2Partridge Formation
    VTOpa;0Pawlet Formation
    VTOpv;1Partridge Formation, Volcanics
    VTOs;0Shelburne, Whitehall, and Strites Pond Formations
    VTOsp;0Stony Point Formation
    VTou;0Biotite Quartz Diorite Gneiss
    VTpCA;0Mount Holly Complex
    VTpCAg;0Undifferentiated Gneiss
    VTpCAgn;0gneiss, quartzite, calc-silicate granulite
    VTpCAm;0Mount Holly Complex, calcite and dolomite marbles
    VTpCAsg;0Stamford Gneiss
    VTpCAsq;0Mount Holly Complex, quartzite and schist
    VTSc;1Clough Formation
    VTSc;2Clough Formation
    VTSf;1Fitch Formation
    VTSf;2Fitch Formation
    VTSs;1Shaw Mountain Formation
    VTSs;2Shaw Mountain Formation
    VTudp;0Ultramafic Rocks
    VTus;0Ultramafic Rocks
    VTuu;0Ultramafic Rocks
    VTwater;0Water
    VTwd;0Hornblende-biotite diorite; gabbro
    VTwe;0Essexitite
    VTwg;0Granites
    VTwle;0Bostonite
    VTwn;0Nepheline Syenite and Pulaskite
    VTws;0Syenite
    VTwv;0Volcanic 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))
    ValueDefinition
    VT001Nicholson, 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))
    ValueDefinition
    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)
    ValueDefinition
    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)
    ValueDefinition
    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)
    ValueDefinition
    1contact, location certain
    3contact, location inferred, queried
    4normal fault, location certain, digitized with upthrown side on the right (code of 1 added to arc-para1 where U/D is designated in source)
    6normal 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)
    7shoreline or riverbank
    10thrust fault, location certain, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
    11thrust fault, location approximate, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
    12thrust fault, location inferred, queried, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
    30fault, sense of displacement unknown or undefined, location certain
    32fault, sense of displacement unknown or undefined, location inferred or queried
    35high-angle reverse fault, location certain, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
    37high-angle reverse fault, location inferred, teeth on right from origin (angle of thrusting added to arc-para1 where designated in source)
    124state boundary
    arc-para1
    Used for "decorated" lines where additional information is needed.

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    0no additional information
    1U/D designated in source
    arc-para2
    "Scratch" field used mostly in Alaska.

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    0no 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)
    ValueDefinition
    VT001Nicholson, 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.
    US001Johnson, 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)
  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
    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., 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: 250000
    Source_Contribution: provided geology for state map
    state boundaries (source 2 of 3)
    Johnson, Bruce R., 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: 100000
    Source_Contribution: provided linework of the conterminous state boundaries
    lithclass (source 3 of 3)
    Johnson, Bruce R., 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: digital data
    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
    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?

Who wrote the metadata?

Dates:
Last modified: 25-Aug-2006
Metadata author:
U.S. Geological Survey
Attn: Connie L. Dicken
12201 Sunrise Valley Dr. MS954
Reston, VA
USA

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

This page is <https://mrdata.usgs.gov/geology/state/metadata/vt.faq.html>

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