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

Frequently anticipated questions:

• What does this data set describe?
  1. How might 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?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
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  2. How were the data generated, processed, and modified?
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• Who wrote the metadata?

What does this data set describe?

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:

   • http://pubs.usgs.gov/of/2005/1325/

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: 2005

   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?

   PA_geol.pat

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

   ORIG_LABEL

   unmodified map unit symbol from source cover.

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

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

   SGMC_LABEL

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

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

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

   unit_link

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

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

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

   source

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

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

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

   unit_age

   The geologic age from the source map used.

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

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

   rocktype1

   The predominant lithology found in the formation.

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

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

   rocktype2

   The second most predominant lithology in the formation.

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

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

   PA_geol.aat

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

   arc-code

   Unique identifier for the line feature

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

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

   arc-para1

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

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

   Value	Definition
   0	no additional information

   arc-para2

   "Scratch" field used mostly in Alaska.

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

   Value	Definition
   0	no additional information

   source

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

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

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

   Entity_and_Attribute_Overview:

   Coding for polygon attributes:

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

   Coding for arc attributes:

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

   Coding for point attributes:

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

   Coding for dikes (special arcs) attributes:

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

   Entity_and_Attribute_Detail_Citation: ESRI
   

Who produced the data set?

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

   • http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx

   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?
   • Availability in digital form:

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

   • Cost to order the data: none

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)