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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).
  1. How might 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:

  2. 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
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2005Currentness_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?
    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)
    ValueDefinition
    CaAntietam Formation
    CahAntietam and Harpers Formations, undivided
    CalAllentown Formation
    CbsBuffalo Springs Formation
    CchChickies Formation
    CeElbrook Formation
    CgGatesburg Formation
    CglLower members of Gatesburg Formation, undivided
    CgmMines Member of Gatesburg Formation
    ChHarpers Formation
    ChaHardyston Formation
    ChmMontalto Member of Harpers Formation
    CkKinzers Formation
    ClLedger Formation
    ClvLeithsville Formation
    CmMillbach Formation
    CmsWinooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
    CphPleasant Hill Formation
    CrRichland Formation
    CsbSnitz Creek and Buffalo Springs Formations, undivided
    CscSnitz Creek Formation
    CsgShadygrove Formation
    CtTomstown Formation
    CulLower (Middle?) Cambrian rocks, undivided
    CvVintage Formation
    CwWarrior Formation
    CwbWaynesboro Formation
    CwlWeverton and Loudoun Formations, undivided
    CzZullinger Formation
    CazZooks Corner Formation
    DbeButtermilk Falls Limestone through Esopus Formation, undivided
    DbhBrallier and Harrell Formations, undivided
    DbrBerea Sandstone through Riceville Formation, undivided
    DbvBerea Sandstone through Venango Formation, undivided
    DcbBuddys Run Member of Catskill Formation
    DcbrBeaverdam Run Member of Catskill Formation
    DcbsBerry Run and Sawmill Run Members of Catskill Formation, undivided
    DccfClarks Ferry Member of Catskill Formation
    DcdDuncannon Member of Catskill Formation
    DchChadakoin Formation
    DcivIrish Valley Member of Catskill Formation
    DckCatskill Formation
    DclrLong Run Member of Catskill Formation
    DclwLong Run and Walcksville Members of Catskill Formation, undivided
    DcpPackerton Member of Catskill Formation
    DcpgPoplar Gap Member of Catskill Formation
    DcppPoplar Gap and Packerton Members of Catskill Formation, undivided
    DcrCorry Sandstone through Riceville Formation, undivided
    DcscSherman Creek Member of Catskill Formation
    DctTowamensing Member of Catskill Formation
    DcwWalcksville Member of Catskill Formation
    DcwtWalcksville and Towamensing Members of Catskill Formation, undivided
    DfForeknobs Formation
    DgGirard Shale
    DhHamilton Group
    DlhLock Haven Formation
    DmMarcellus Formation
    DmhMahantango Formation
    DneNortheast Shale
    DonOnondaga Formation
    DooOnondaga and Old Port Formations, undivided
    DorRidgeley Member of Old Port Formation
    DosnShriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
    DrcRidgeley Formation through Coeymans Formation, undivided
    DsScherr Formation
    DSkcKeyser Formation through Clinton Group, undivided
    DSkmKeyser Formation through Mifflintown Formation, undivided
    DSktKeyser and Tonoloway Formations, undivided
    DSopOnondaga Formation through Poxono Island Formation, undivided
    DtrTrimmers Rock Formation
    DvVenango Formation
    JdDiabase
    JsSedimentary strata at Jacksonwald and Aspers
    KpPatapsco(?) Formation
    MbBurgoon Sandstone
    MbcBurgoon Sandstone through Cuyahoga Group, undifferentiated
    McCuyahoga Group
    MDhmHuntley Mountain Formation
    MDprPocono and Rockwell Formations, undivided
    MDrRockwell Formation
    MDskSpechty Kopf Formation
    MDsoShenango Formation through Oswayo Formation, undivided
    MDsrShenango Formation through Riceville Formation, undivided
    MmcMauch Chunk Formation
    MpPocono Formation
    MsShenango Formation
    MscShenango Formation through Cuyahoga Group, undivided
    OaAxemann Formation
    OanAnnville Formation
    ObBeekmantown Group
    ObaBellefonte and Axemann Formations, undivided
    ObeBald 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)
    ValueDefinition
    CAa;22Antietam Formation
    CAa;24Antietam Formation
    CAah;22Antietam and Harpers Formations, undivided
    CAal;23Allentown Formation
    CAbs;22Buffalo Springs Formation
    CAch;22Chickies Formation
    CAe;22Elbrook Formation
    CAe;24Elbrook Formation
    CAg;15Gatesburg Formation
    CAgl;15Lower members of Gatesburg Formation, undivided
    CAgm;15Mines Member of Gatesburg Formation
    CAh;22Harpers Formation
    CAh;24Harpers Formation
    CAha;23Hardyston Formation
    CAhm;24Montalto Member of Harpers Formation
    CAk;22Kinzers Formation
    CAl;22Ledger Formation
    CAlv;23Leithsville Formation
    CAm;22Millbach Formation
    CAms;22Winooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
    CAph;15Pleasant Hill Formation
    CAr;22Richland Formation
    CAsb;22Snitz Creek and Buffalo Springs Formations, undivided
    CAsc;22Snitz Creek Formation
    CAsg;24Shadygrove Formation
    CAt;24Tomstown Formation
    CAul;22Lower (Middle?) Cambrian rocks, undivided
    CAv;22Vintage Formation
    CAw;15Warrior Formation
    CAwb;15Waynesboro Formation
    CAwb;24Waynesboro Formation
    CAwl;24Weverton and Loudoun Formations, undivided
    CAz;24Zullinger Formation
    CAzc;22Zooks Corner Formation
    Dbe;14Buttermilk Falls Limestone through Esopus Formation, undivided
    Dbh;12Brallier and Harrell Formations, undivided
    Dbr;8Berea Sandstone through Riceville Formation, undivided
    Dbv;8Berea Sandstone through Venango Formation, undivided
    Dcb;17Buddys Run Member of Catskill Formation
    Dcbr;18Beaverdam Run Member of Catskill Formation
    Dcbs;18Berry Run and Sawmill Run Members of Catskill Formation, undivided
    Dccf;17Clarks Ferry Member of Catskill Formation
    Dccf;18Clarks Ferry Member of Catskill Formation
    Dcd;17Duncannon Member of Catskill Formation
    Dcd;18Duncannon Member of Catskill Formation
    Dch;8Chadakoin Formation
    Dciv;17Irish Valley Member of Catskill Formation
    Dck;12Catskill Formation
    Dck;15Catskill Formation
    Dck;16Catskill Formation
    Dclr;18Long Run Member of Catskill Formation
    Dclw;18Long Run and Walcksville Members of Catskill Formation, undivided
    Dcp;18Packerton Member of Catskill Formation
    Dcpg;18Poplar Gap Member of Catskill Formation
    Dcpp;18Poplar Gap and Packerton Members of Catskill Formation, undivided
    Dcr;8Corry Sandstone through Riceville Formation, undivided
    Dcsc;17Sherman Creek Member of Catskill Formation
    Dct;18Towamensing Member of Catskill Formation
    Dcw;18Walcksville Member of Catskill Formation
    Dcwt;18Walcksville and Towamensing Members of Catskill Formation, undivided
    Df;12Foreknobs Formation
    Dg;8Girard Shale
    Dh;0Hamilton Group
    Dlh;15Lock Haven Formation
    Dm;0Marcellus Formation
    Dmh;0Mahantango Formation
    Dne;8Northeast Shale
    Don;19Onondaga Formation
    Doo;19Onondaga and Old Port Formations, undivided
    Dor;19Ridgeley Member of Old Port Formation
    Dosn;19Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
    Drc;14Ridgeley Formation through Coeymans Formation, undivided
    Ds;12Scherr Formation
    DSkc;19Keyser Formation through Clinton Group, undivided
    DSkm;19Keyser Formation through Mifflintown Formation, undivided
    DSkt;19Keyser and Tonoloway Formations, undivided
    DSop;14Onondaga Formation through Poxono Island Formation, undivided
    Dtr;16Trimmers Rock Formation
    Dv;8Venango Formation
    Jd;0Diabase
    Js;0Sedimentary strata at Jacksonwald and Aspers
    Kp;0Patapsco(?) Formation
    Mb;10Burgoon Sandstone
    Mbc;9Burgoon Sandstone through Cuyahoga Group, undifferentiated
    Mc;8Cuyahoga Group
    MDhm;13Huntley Mountain Formation
    MDpr;12Pocono and Rockwell Formations, undivided
    MDr;12Rockwell Formation
    MDsk;14Spechty Kopf Formation
    MDso;8Shenango Formation through Oswayo Formation, undivided
    MDsr;8Shenango Formation through Riceville Formation, undivided
    Mmc;7Mauch Chunk Formation
    Mp;11Pocono Formation
    Ms;8Shenango Formation
    Msc;8Shenango Formation through Cuyahoga Group, undivided
    Oa;15Axemann Formation
    Oan;22Annville Formation
    Ob;20Beekmantown Group
    Ob;23Beekmantown Group
    Oba;15Bellefonte and Axemann Formations, undivided
    Obe;15Bald 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)
    ValueDefinition
    PACAa;22Antietam Formation
    PACAa;24Antietam Formation
    PACAah;22Antietam and Harpers Formations, undivided
    PACAal;23Allentown Formation
    PACAbs;22Buffalo Springs Formation
    PACAch;22Chickies Formation
    PACAe;22Elbrook Formation
    PACAe;24Elbrook Formation
    PACAg;15Gatesburg Formation
    PACAgl;15Lower members of Gatesburg Formation, undivided
    PACAgm;15Mines Member of Gatesburg Formation
    PACAh;22Harpers Formation
    PACAh;24Harpers Formation
    PACAha;23Hardyston Formation
    PACAhm;24Montalto Member of Harpers Formation
    PACAk;22Kinzers Formation
    PACAl;22Ledger Formation
    PACAlv;23Leithsville Formation
    PACAm;22Millbach Formation
    PACAms;22Winooski Dolostone, Monkton Quartzite, and Dunham (Rutland) Dolostone
    PACAph;15Pleasant Hill Formation
    PACAr;22Richland Formation
    PACAsb;22Snitz Creek and Buffalo Springs Formations, undivided
    PACAsc;22Snitz Creek Formation
    PACAsg;24Shadygrove Formation
    PACAt;24Tomstown Formation
    PACAul;22Lower (Middle?) Cambrian rocks, undivided
    PACAv;22Vintage Formation
    PACAw;15Warrior Formation
    PACAwb;15Waynesboro Formation
    PACAwb;24Waynesboro Formation
    PACAwl;24Weverton and Loudoun Formations, undivided
    PACAz;24Zullinger Formation
    PACAzc;22Zooks Corner Formation
    PADbe;14Buttermilk Falls Limestone through Esopus Formation, undivided
    PADbh;12Brallier and Harrell Formations, undivided
    PADbr;8Berea Sandstone through Riceville Formation, undivided
    PADbv;8Berea Sandstone through Venango Formation, undivided
    PADcb;17Buddys Run Member of Catskill Formation
    PADcbr;18Beaverdam Run Member of Catskill Formation
    PADcbs;18Berry Run and Sawmill Run Members of Catskill Formation, undivided
    PADccf;17Clarks Ferry Member of Catskill Formation
    PADccf;18Clarks Ferry Member of Catskill Formation
    PADcd;17Duncannon Member of Catskill Formation
    PADcd;18Duncannon Member of Catskill Formation
    PADch;8Chadakoin Formation
    PADciv;17Irish Valley Member of Catskill Formation
    PADck;12Catskill Formation
    PADck;15Catskill Formation
    PADck;16Catskill Formation
    PADclr;18Long Run Member of Catskill Formation
    PADclw;18Long Run and Walcksville Members of Catskill Formation, undivided
    PADcp;18Packerton Member of Catskill Formation
    PADcpg;18Poplar Gap Member of Catskill Formation
    PADcpp;18Poplar Gap and Packerton Members of Catskill Formation, undivided
    PADcr;8Corry Sandstone through Riceville Formation, undivided
    PADcsc;17Sherman Creek Member of Catskill Formation
    PADct;18Towamensing Member of Catskill Formation
    PADcw;18Walcksville Member of Catskill Formation
    PADcwt;18Walcksville and Towamensing Members of Catskill Formation, undivided
    PADf;12Foreknobs Formation
    PADg;8Girard Shale
    PADh;0Hamilton Group
    PADlh;15Lock Haven Formation
    PADm;0Marcellus Formation
    PADmh;0Mahantango Formation
    PADne;8Northeast Shale
    PADon;19Onondaga Formation
    PADoo;19Onondaga and Old Port Formations, undivided
    PADor;19Ridgeley Member of Old Port Formation
    PADosn;19Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided
    PADrc;14Ridgeley Formation through Coeymans Formation, undivided
    PADs;12Scherr Formation
    PADSkc;19Keyser Formation through Clinton Group, undivided
    PADSkm;19Keyser Formation through Mifflintown Formation, undivided
    PADSkt;19Keyser and Tonoloway Formations, undivided
    PADSop;14Onondaga Formation through Poxono Island Formation, undivided
    PADtr;16Trimmers Rock Formation
    PADv;8Venango Formation
    PAJd;0Diabase
    PAJs;0Sedimentary strata at Jacksonwald and Aspers
    PAKp;0Patapsco(?) Formation
    PAMb;10Burgoon Sandstone
    PAMbc;9Burgoon Sandstone through Cuyahoga Group, undifferentiated
    PAMc;8Cuyahoga Group
    PAMDhm;13Huntley Mountain Formation
    PAMDpr;12Pocono and Rockwell Formations, undivided
    PAMDr;12Rockwell Formation
    PAMDsk;14Spechty Kopf Formation
    PAMDso;8Shenango Formation through Oswayo Formation, undivided
    PAMDsr;8Shenango Formation through Riceville Formation, undivided
    PAMmc;7Mauch Chunk Formation
    PAMp;11Pocono Formation
    PAMs;8Shenango Formation
    PAMsc;8Shenango Formation through Cuyahoga Group, undivided
    PAOa;15Axemann Formation
    PAOan;22Annville Formation
    PAOb;20Beekmantown Group
    PAOb;23Beekmantown Group
    PAOba;15Bellefonte and Axemann Formations, undivided
    PAObe;15Bald 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)
    ValueDefinition
    PA002Pennsylvania 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
    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, Chapter A)
    unit_age
    The geologic age from the source map used.

    type: character width: 60 output width: 60 (Source: Doug Stoeser)
    ValueDefinition
    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)
    ValueDefinition
    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)
    ValueDefinition
    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)
    ValueDefinition
    1contact, location certain
    7shoreline or riverbank
    30fault, sense of displacement unknown or undefined, location certain.
    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
    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
    PA002Pennsylvania 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
    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, 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?

  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 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?

  1. 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:

    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: 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 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.
  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://www.nadm-geo.org/dmdt/index.html
  2. 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.
  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: 12-Sep-2005
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/pa.faq.html>

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