20240307 10590300 1.0 FALSE MapUnitPolys2021 002 -373530.872300 380257.703300 60036.491200 385297.679200 1 Projected GCS_NAD_1983_2011 Linear Unit: Meter (1.000000) NAD_1983_2011_Virginia_Lambert <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>PROJCS[&quot;NAD_1983_2011_Virginia_Lambert&quot;,GEOGCS[&quot;GCS_NAD_1983_2011&quot;,DATUM[&quot;D_NAD_1983_2011&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Lambert_Conformal_Conic&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-79.5],PARAMETER[&quot;Standard_Parallel_1&quot;,37.0],PARAMETER[&quot;Standard_Parallel_2&quot;,39.5],PARAMETER[&quot;Latitude_Of_Origin&quot;,36.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,6591]]</WKT><XOrigin>-37232800</XOrigin><YOrigin>-28884600</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>6591</WKID><LatestWKID>6591</LatestWKID></ProjectedCoordinateSystem> 20240307 16215600 20240307 16215600 Anne Carter Witt Virginia Department of Energy, Geology and Mineral Resources Program Geologist 434-951-6319 900 Natural Resources Drive, Suite 500 Charlottesville VA 22903 anne.witt@energy.virginia.gov 20211127 ArcGIS Metadata 1.0 Enterprise Geodatabase Feature Class Feature class MapUnitPolys, part of Statewide Geologic Map Database of Virginia: Virginia Department of Energy, Geology and Mineral Resources Program, Open-file Report 2021-12, scale 1:250,000. 2021-11-30 1.0 Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. Jr., and Prince, P.S., editors Virginia Department of Energy Virginia vector digital data This digital map database represents the general distribution of surficial and bedrock geologic units mapped in the Commonwealth of Virginia and compiled at a nominal scale of 1:250,000. New and modified geologic contacts were digitized on screen by geologists at approximately 1:24,000 from maps that ranged from 1:24,000 to 1:250,000-scale. The database delineates map units that are identified by general age and lithology, generally following the stratigraphic nomenclature of the U.S. Geological Survey (USGS). This metadata report provides an overview of the data content of this GeMS geodatabase and associated files. This digital map database represents an update to the contact lines, geologic map units, and map unit descriptions found on the 1993 Geologic Map of Virginia and is intended to show the generalized geology of the state. The database also provides surficial geologic units derived from 10-meter LIDAR and new geologic mapping (where available) as a separate feature class. It is recommended that users not use the data beyond the recommended scale range of 1:100,000. Users requiring more detailed geologic mapping should refer to the original geologic map citation found the "DataSources" field of the various feature classes and non-spatial tables. This digital database was prepared and edited by Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. Jr. and Prince, P.S. Anne Carter Witt Virginia Department of Energy, Geology and Mineral Resources Program Geologist 434-951-6319 900 Natural Resources Drive, Suite 500 Charlottesville VA 22903 anne.witt@energy.virginia.gov Blue Ridge Appalachian Plateau Valley and Ridge Piedmont Virginia Coastal Plain geoscientificInformation ISO 19115 Topic Category geologic geologic contacts geologic mapping surficial geologic units geologic maps geomorphology surficial geologic maps geological map geologic faulting geologic formations geoscientificInformation geologic geologic contacts geologic mapping surficial geologic units geologic maps geomorphology surficial geologic maps geological map geologic faulting geologic formations Blue Ridge Appalachian Plateau Valley and Ridge Piedmont Virginia Coastal Plain This dataset is not precise beyond 1:100,000-scale and is not for use at scales larger than 1:100,000. Any derivative products utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these datasets, nor to imply that changes they made were approved by the Virginia Department of Energy. The Virginia Department of Energy (Virginia Energy) provides these geographic data "as is." Virginia Energy makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. Virginia Energy further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at Virginia Energy, no warranty, expressed or implied, is made by Virginia Energy regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall Virginia Energy have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of delivery, installation, operation, or support by Virginia Energy. Esri ArcGIS 10.5 (Build 6491) Service Pack N/A (Build N/A) true -83.6754 -75.1664 39.466 36.5409 0.000000 0.000000 publication date 1993-01-01 2021-11-30 0.000000 0.000000 Feature class MapUnitPolys is part of VAStateGeologicMap.gdb, a composite dataset that conforms to "GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps", available at http://ngmdb.usgs.gov/Info/standards/GeMS/. 1 -83.837803 -75.084196 39.471571 36.462301 The accuracy of the geologic data varies depending on the compiled map. In general, contact lines were digitized on screen at 1:24,000-scale. The accuracy of the line work (and generated map unit polygons) is reflected in the LocationConfidenceMeters field in the ContactsAndFaults feature class. Surficial units were interpreted primarily using 10-meter LIDAR or from geologic maps, if available. All line work (bedrock and surficial) was given a corresponding data source citation, identifying the original map source for the line work or the geologist who made the contact line interpretation. Database topology, geometric, and logical errors were identified and fixed iteratively using the "Check Topology" tool and the "Validate Database" tool in the ArcGIS GeMS Database Toolbox (available at https://github.com/usgs/gems-tools-arcmap). The geologic bedrock data and geologic descriptions include information from published geologic maps up to 2021 and is considered to be an update to the geologic map line work originally compiled in 1993. Surficial data was digitized from 10-meter LIDAR flown between 2010 and 2019. Only surficial features that were large enough to identify at 1:24,000-scale were added to MapUnitOverlayPolys. A personal geodatabase of the 1993 map (including contacts and map unit polygons) was imported to a GeMS format geodatabase. Original geologic map descriptions from the 1993 Expanded Explanation were copied from a Word document into the DescriptionOfMapUnits table. Citations were added from the Expanded Explanation into the DataSources table. This data was then loaded onto an ArcSDE server so that multiple editors could update and edit geologic contacts. 2019-01-01 Geologic contact lines were used to build geologic map unit polygons using the ArcGIS Feature to Polygon tool. A temporary annotation feature class was used to label the map unit polygons and symbolize (color) them. 2021-01-01 Geologic contacts where compiled and updated by geologists from various map sources. Geologists digitized contacts at a nominal scale of 1:24,000. Edge match issues were resolved by the individual geologist. Citations for the source for individual contact lines were added to the DataSources table. Surficial units were also digitized and added to the MapUnitOverlayPolys feature class. 2021-01-01 The GeMS ArcToolbox was used to validate the database, update metadata, and automate field completion. 2021-01-01 Map unit descriptions were updated for each geologic unit using the best available geologic data in an Excel spreadsheet. Citations are provided in the DataSources table and fields. Colors were chosen for each map unit. These colors were then used to symbolize the map units built in Step 3. 2021-01-01 7825 withheld Polygons that record distribution of map units (including water, snowfields, glaciers, and unmapped area) on the particular map horizon. GeMS Feature Class 7825 OBJECTID Internal feature number. Esri Unrepresentable domain. Shape The geometry data type. ESRI Unrepresentable domain. MapUnit Short plain-text identifier of the map unit. Foreign key to DescriptionOfMapUnits table. GeMS OCsm Shores Complex, metagraywacke this report, table DescriptionOfMapUnits gs exotic blocks within melange units, actinolite schist metabasalt this report, table DescriptionOfMapUnits gr exotic blocks within melange units, granitoid rocks this report, table DescriptionOfMapUnits OCsc Shores Complex, metagraywacke, schist, and gneiss this report, table DescriptionOfMapUnits gn exotic blocks within melange units, gneiss this report, table DescriptionOfMapUnits OCf Falls Church Intrusive Suite this report, table DescriptionOfMapUnits Olgr Shelton Igneous Suite, granitoid gneiss this report, table DescriptionOfMapUnits sch exotic blocks within melange units, schist this report, table DescriptionOfMapUnits Oms metasedimentary rocks, undivided this report, table DescriptionOfMapUnits OZIII Mine Run Complex, melange zone III this report, table DescriptionOfMapUnits Ypom Peaks of Otter metagranitoid this report, table DescriptionOfMapUnits td terrace deposits, undifferentiated this report, table DescriptionOfMapUnits Pzlcg foliated granite of Little Lickinghole Creek this report, table DescriptionOfMapUnits mpg migmatitic paragneiss this report, table DescriptionOfMapUnits Zht hornblende-biotite quartz diorite or tonalite this report, table DescriptionOfMapUnits Zhv Hyco Formation, phyllitic volcaniclastic rock and mudflow breccia this report, table DescriptionOfMapUnits Zhc Hyco Formation, felsic crystal metatuff this report, table DescriptionOfMapUnits Zhb Catoctin Formation, Metabasalt breccia (high-titanium) this report, table DescriptionOfMapUnits Zhf Hyco Formation, phyllite and metatuff this report, table DescriptionOfMapUnits Pzfbgr foliated biotite granite this report, table DescriptionOfMapUnits Ygg layered leucocratic granite gneiss this report, table DescriptionOfMapUnits Ygd Megacrystic alkali-feldspar metagranite and metagranidiorite this report, table DescriptionOfMapUnits Ygb layered biotite granulite and gneiss this report, table DescriptionOfMapUnits Zcc Country Line Complex, biotite hornblende gneiss of Cluster Springs this report, table DescriptionOfMapUnits Ygn leucocratic granulite and gneiss this report, table DescriptionOfMapUnits Ygl Granitic gneiss this report, table DescriptionOfMapUnits Pzms muscovite schist and gneiss this report, table DescriptionOfMapUnits Ygh hornblende gneiss this report, table DescriptionOfMapUnits Pzmm Maidens Gneiss, garnet-muscovite quartzofeldspathic gneiss this report, table DescriptionOfMapUnits p Peridotite this report, table DescriptionOfMapUnits Ygt garnetiferous leucocratic metagranite this report, table DescriptionOfMapUnits Spl Pegmatite belt, layered biotite gneiss this report, table DescriptionOfMapUnits Ygr biotite granite gneiss this report, table DescriptionOfMapUnits Zcr Catoctin Formation, Metarhyolite this report, table DescriptionOfMapUnits Zcs Catoctin Formation, Metasedimentary rocks this report, table DescriptionOfMapUnits Cnhk Nolichucky and Honaker Formations this report, table DescriptionOfMapUnits Pzmg streaky metagranite to metatonalite this report, table DescriptionOfMapUnits Pzma Maidens Gneiss, amphibolite and amphibole gneiss this report, table DescriptionOfMapUnits Pzmb Maidens Gneiss, quartz-rich, magnetite-bearing biotite gneiss this report, table DescriptionOfMapUnits Zvk Gneiss of Kenbridge this report, table DescriptionOfMapUnits Zvh metamorphosed hornblende granodiorite to quartz monzonite this report, table DescriptionOfMapUnits Zvb metamorphosed granodiorite to leucogranite this report, table DescriptionOfMapUnits Pzbg foliated biotite granite this report, table DescriptionOfMapUnits Zvg Virgilina Formation, greenstone this report, table DescriptionOfMapUnits Cf Frederick Limestone this report, table DescriptionOfMapUnits Zvs Virgilina Formation, metasedimentary upper unit this report, table DescriptionOfMapUnits Cwbt Waynesboro Formation and Tomstown Dolomite, undivided this report, table DescriptionOfMapUnits Ora Rich Acres Formation this report, table DescriptionOfMapUnits Mg Greenbrier Limestone this report, table DescriptionOfMapUnits mvsb metavolcanic rocks and mica schist at Bear Creek Lake this report, table DescriptionOfMapUnits Mb Bluefield Formation this report, table DescriptionOfMapUnits Mm Maccrady Shale this report, table DescriptionOfMapUnits Cs Shady Dolomite this report, table DescriptionOfMapUnits Mp Pennington Group this report, table DescriptionOfMapUnits Cnmrr Nolichucky and Maryville Formations, Rogersville Shale, and Rutledge Formation this report, table DescriptionOfMapUnits DSbf Buffards Formation this report, table DescriptionOfMapUnits Zm Marble this report, table DescriptionOfMapUnits SObg granodiorite of Elk Creek and environs this report, table DescriptionOfMapUnits PzZbk Buckingham Complex, metamorphosed mafic and ultramafic rocks this report, table DescriptionOfMapUnits DSx Lower Devonian and Upper Silurian formations this report, table DescriptionOfMapUnits Skrt Keefer Sandstone, Rose Hill and Tuscarora Formations this report, table DescriptionOfMapUnits Zf fine-grained felsite this report, table DescriptionOfMapUnits Zg granite this report, table DescriptionOfMapUnits PzZbc granite and gneiss of the Boscobel complex this report, table DescriptionOfMapUnits Za Aaron Formation, phyllite and slate this report, table DescriptionOfMapUnits DSq Quantico Formation, slate and porphyroblastic schist this report, table DescriptionOfMapUnits Zv mafic and felsic metavolcanic rocks this report, table DescriptionOfMapUnits Zp garnet-graphite paragneiss this report, table DescriptionOfMapUnits PzZbq Buckingham Complex, quartz diorite this report, table DescriptionOfMapUnits DSa Arvonia Formation, slate and porphyroblastic schist this report, table DescriptionOfMapUnits Zmi mafic igneous complex this report, table DescriptionOfMapUnits Zml Mount Rogers Formation: Graywacke conglomerate, graywacke, tuffaceous sandstone, laminated siltstone, shale, and minor greenstone and rhyolite this report, table DescriptionOfMapUnits OZII Mine Run Complex, melange zone II this report, table DescriptionOfMapUnits Zma Abbeyville metagabbro this report, table DescriptionOfMapUnits Zmf Mount Rogers Formation: Porphyritic felsite this report, table DescriptionOfMapUnits Zmg Moneta Gneiss this report, table DescriptionOfMapUnits Zmd metagabbro this report, table DescriptionOfMapUnits Zme Mechum River Formation this report, table DescriptionOfMapUnits Dfk Foreknobs Formation this report, table DescriptionOfMapUnits Zmr Mount Rogers Formation: phenocryst-poor rhyolite this report, table DescriptionOfMapUnits Zmp Mount Rogers Formation: porphyritic rhyolite this report, table DescriptionOfMapUnits Zmt tonalite at Mayo Reservoir this report, table DescriptionOfMapUnits MDu Mississippian and Devonian formations undivided this report, table DescriptionOfMapUnits Pnr New River Formation this report, table DescriptionOfMapUnits mss exotic blocks within melange units, metasandstone and metasiltstone this report, table DescriptionOfMapUnits DOz Lower Devonian and Silurian, and Upper Ordovician formations undivided this report, table DescriptionOfMapUnits msg Miocene sand and gravel this report, table DescriptionOfMapUnits Dto biotite metatonalite this report, table DescriptionOfMapUnits Ybp porphyroblastic granite gneiss this report, table DescriptionOfMapUnits Ybr border gneiss this report, table DescriptionOfMapUnits PMgf biotite granite of Farmers Lake this report, table DescriptionOfMapUnits Ybm megacrystic biotite monzogranite this report, table DescriptionOfMapUnits Ybn nelsonite this report, table DescriptionOfMapUnits Cmv Interlayered mafic and felsic metavolcanic rocks- amphibolite, hornblende-biotite gneiss and schist this report, table DescriptionOfMapUnits Zdg hornblende diorite and gabbro this report, table DescriptionOfMapUnits Ybc Bottom Creek metagranitoid and gneiss this report, table DescriptionOfMapUnits Ybd Charnockitic diorite to orthopyroxenite this report, table DescriptionOfMapUnits Sf Falls Run Granite Gneiss this report, table DescriptionOfMapUnits Ybg porphyroblastic biotite-plagioclase augen gneiss this report, table DescriptionOfMapUnits Pzhdw hornblende diorite at Whiteville this report, table DescriptionOfMapUnits mf exotic blocks within melange units, mafic plutonic rocks this report, table DescriptionOfMapUnits Shrc Hancock, Rose Hill, and Clinch Formations this report, table DescriptionOfMapUnits Oun Juniata, Oswego, Martinsburg (Reedsville and Dolly Ridge), and Eggleston Formations this report, table DescriptionOfMapUnits Ous Juniata Formation, Reedsville Shale, Trenton Limestone, Eggleston Formation this report, table DescriptionOfMapUnits my mylonite this report, table DescriptionOfMapUnits Zrb Robertson River Igneous Suite, Battle Mountain alkali feldspar granite this report, table DescriptionOfMapUnits Zrw Robertson River Igneous Suite, White Oak Alkali Feldspar Granite this report, table DescriptionOfMapUnits Ypp layered porphyroblastic pyroxene granulite this report, table DescriptionOfMapUnits DSas Arvonia Formation, porphyroblastic garnet-biotite schist this report, table DescriptionOfMapUnits Zrr Robertson River Igneous Suite, Rivanna Granite this report, table DescriptionOfMapUnits Ypb Megacrystic quartz monzonite this report, table DescriptionOfMapUnits Ypc porphyritic leucocharnockite this report, table DescriptionOfMapUnits DSab Arvonia Formation, Bremo quartzite this report, table DescriptionOfMapUnits Zrc Robertson River Igneous Suite, Cobbler Mountain Alkali Feldspar Quartz Syenite this report, table DescriptionOfMapUnits Ypg layered pyroxene granulite this report, table DescriptionOfMapUnits Zra Robertson River Igneous Suite, Amissville Alkali Feldspar Granite this report, table DescriptionOfMapUnits Zrl Robertson River Igneous Suite, Laurel Mills Granite this report, table DescriptionOfMapUnits Zrh Robertson River Igneous Suite, Hitt Mountain Alkali Feldspar Syenite this report, table DescriptionOfMapUnits PzZgd biotite granodiorite this report, table DescriptionOfMapUnits Ypi Pilot gneiss this report, table DescriptionOfMapUnits Sm Massanutten Sandstone this report, table DescriptionOfMapUnits Yl leucocharnockite this report, table DescriptionOfMapUnits Yn metanorite and metadiorite this report, table DescriptionOfMapUnits Yc charnockite this report, table DescriptionOfMapUnits Jsh Newark Supergroup, siltstone and shale, interbedded this report, table DescriptionOfMapUnits Yg leucocratic metagranite this report, table DescriptionOfMapUnits PzZgq Green Springs pluton, quartz diorite and granite this report, table DescriptionOfMapUnits Jss Newark Supergroup, sandstone and siltstone, interbedded this report, table DescriptionOfMapUnits Yq quartzite and quartz-sericite tectonite this report, table DescriptionOfMapUnits Yp garnet graphite gneiss this report, table DescriptionOfMapUnits Yt metatrondhjemite this report, table DescriptionOfMapUnits Qbc Bacons Castle Formation this report, table DescriptionOfMapUnits fg gneissic granite and granodiorite this report, table DescriptionOfMapUnits Cfvs Interlayered felsic and mafic metavolcanic and metasedimentary rocks- felsic metatuff, mica schist, and gneiss this report, table DescriptionOfMapUnits Zgdp Pollywright Cove granite this report, table DescriptionOfMapUnits Zgds Stewartsville granite this report, table DescriptionOfMapUnits sp swamp deposits this report, table DescriptionOfMapUnits MDcw Chattanooga Shale and Wildcat Valley Sandstone this report, table DescriptionOfMapUnits Zgdw White Oak Creek granite this report, table DescriptionOfMapUnits Zgdm Mobley Mountain granite this report, table DescriptionOfMapUnits sb sand this report, table DescriptionOfMapUnits Mmpr Maccrady Shale and Price Formation, undivided this report, table DescriptionOfMapUnits Zgdd Dillons Mill granite this report, table DescriptionOfMapUnits Och Chopawamsic Formation, undivided this report, table DescriptionOfMapUnits Oco Columbia pluton this report, table DescriptionOfMapUnits Oca Carysbrook pluton this report, table DescriptionOfMapUnits Yma layered quartzofeldspathic augen gneiss and flaser gneiss this report, table DescriptionOfMapUnits Qmsm Moorings unit, sandy mud this report, table DescriptionOfMapUnits Ymg Crozet granite, megacrystic granitoid this report, table DescriptionOfMapUnits Ymm Marshall Metagranite, medium grained biotite metagranite this report, table DescriptionOfMapUnits Yml porphyroclastic metagranitoid this report, table DescriptionOfMapUnits Yfh Flint Hill Gneiss this report, table DescriptionOfMapUnits Mgn metagranite this report, table DescriptionOfMapUnits Mgp granite, pegmatite, and alaskite this report, table DescriptionOfMapUnits PzZgs Green Springs pluton, diorite and hornblendite this report, table DescriptionOfMapUnits Pzeh metavolcanic and metasedimentary rocks of Elk Hill complex this report, table DescriptionOfMapUnits PPsm biotite-muscovite granite of Stones Mill pluton this report, table DescriptionOfMapUnits Cevp Evington Group: phyllite and schist this report, table DescriptionOfMapUnits Cevm Evington Group: metacarbonate this report, table DescriptionOfMapUnits Zgns gneiss and schist this report, table DescriptionOfMapUnits Zgnv granite of the North View pluton this report, table DescriptionOfMapUnits PzZdm Diana Mills complex this report, table DescriptionOfMapUnits Zadg altered diorite and gabbro this report, table DescriptionOfMapUnits Csv Sykesville Formation this report, table DescriptionOfMapUnits Omb Martinsburg and Oranda Formation this report, table DescriptionOfMapUnits OCk Knox Group this report, table DescriptionOfMapUnits Omg biotite metagranite and fine-grained felsic gneiss this report, table DescriptionOfMapUnits Omf Cunningham complex, gneiss of Conner Lake this report, table DescriptionOfMapUnits OCo Occoquan granite this report, table DescriptionOfMapUnits Omk Mascot and Kingsport Dolomites this report, table DescriptionOfMapUnits Omi amphibolitic metagrabbro this report, table DescriptionOfMapUnits Omh biotite-hornblende gneiss of Ellis Creek this report, table DescriptionOfMapUnits OCd Dalecarlia Intrusive Suite this report, table DescriptionOfMapUnits Omm biotite gneiss and schist of Cedar Grove this report, table DescriptionOfMapUnits Oml Hardy Creek, Ben Hur, Woodway, Hurricane Bridge, Martin Creek, Rob Camp, Poteet, and Dot Limestones (Lee County) this report, table DescriptionOfMapUnits Pzdgn quartz diorite gneiss this report, table DescriptionOfMapUnits PzZbgr biotite granite this report, table DescriptionOfMapUnits OCp phyllite this report, table DescriptionOfMapUnits Pzmh Maidens Gneiss, biotite-hornblende gneiss this report, table DescriptionOfMapUnits Yscg Sandy Creek gneiss this report, table DescriptionOfMapUnits OCpo Popes Head Formation, Old Mill Branch Metasiltstone this report, table DescriptionOfMapUnits OCpg plagiogranite tonalite this report, table DescriptionOfMapUnits CZu Unicoi Formation this report, table DescriptionOfMapUnits OCz Ordovician and Cambrian Formations undivided this report, table DescriptionOfMapUnits CZl Annadale Group, Lake Barcroft Metasandstone this report, table DescriptionOfMapUnits OCps Popes Head Formation, Station Hills Phyllite this report, table DescriptionOfMapUnits CZa Annadale Group, Accotink Schist this report, table DescriptionOfMapUnits CZg Garrisonville Mafic Complex this report, table DescriptionOfMapUnits Qtlp Tabb Formation, Lynnhaven and Poquoson Allomembers, undifferentiated this report, table DescriptionOfMapUnits Ochf Chopawamsic Formation, felsic metavolcanic rocks this report, table DescriptionOfMapUnits Dbg Buffalo granite this report, table DescriptionOfMapUnits Ochm Chopawamsic Formation, mafic metavolcanic rocks this report, table DescriptionOfMapUnits Mro Red Oak pluton this report, table DescriptionOfMapUnits Qoa Omar Formation, Accomack Member this report, table DescriptionOfMapUnits Pzsy syenite intrusive into Chopawamsic Formation this report, table DescriptionOfMapUnits Spg Pegmatite belt, pegmatitic gneiss this report, table DescriptionOfMapUnits QTu Quaternary and Tertiary deposits, undifferentiated this report, table DescriptionOfMapUnits CZum ultramafic rocks this report, table DescriptionOfMapUnits Pzplg plagiogranite this report, table DescriptionOfMapUnits Yal alkali-feldspar leucogranite this report, table DescriptionOfMapUnits Yan Montpelier metanorthosite this report, table DescriptionOfMapUnits PPsh muscovite-biotite granite of South Hill pluton this report, table DescriptionOfMapUnits Zvgs Virgilina Formation, greenstone and chlorite-sericite phyllite this report, table DescriptionOfMapUnits Otj trondhjemite this report, table DescriptionOfMapUnits Trsh Newark Supergroup, shale and siltstone, interbedded this report, table DescriptionOfMapUnits Mcf Cove Creek Limestone and Fido Sandstone this report, table DescriptionOfMapUnits Qsh Shirley Alloformation this report, table DescriptionOfMapUnits Trsc Chatham Group, pebbly sandstone this report, table DescriptionOfMapUnits Ceh Erwin and Hampton Formations this report, table DescriptionOfMapUnits Zfcm Fine Creek Mills granite this report, table DescriptionOfMapUnits Trss Newark Supergroup, sandstone, siltstone and shale, interbedded this report, table DescriptionOfMapUnits Ysh Schaeffer Hollow granite this report, table DescriptionOfMapUnits Ysc Stuart Creek Gneiss this report, table DescriptionOfMapUnits Ysf State Farm Gneiss this report, table DescriptionOfMapUnits Kp Potomac Formation this report, table DescriptionOfMapUnits CZabm Alligator Back Formation, banded marble this report, table DescriptionOfMapUnits CZaba Alligator Back Formation, actinolite schist this report, table DescriptionOfMapUnits CZabg Alligator Back Formation, feldspathic metagraywacke this report, table DescriptionOfMapUnits b Basalt this report, table DescriptionOfMapUnits Qts Tabb Formation, Sedgefield Allomember this report, table DescriptionOfMapUnits Qtp Tabb Formation, Poquoson Allomember this report, table DescriptionOfMapUnits Zhst Hyco Formation, layered metasiltstone and metatuff this report, table DescriptionOfMapUnits Oeln Edinburg Formation, and Lincolnshire and New Market Limestones (northeast of Roanoke County) this report, table DescriptionOfMapUnits Qtl Tabb Formation, Lynnhaven Allomember this report, table DescriptionOfMapUnits Trs1 Newark Supergroup, sandstone, arkosic this report, table DescriptionOfMapUnits Zgdr Rockfish River pluton this report, table DescriptionOfMapUnits Zram Robertson River Igneous Suite, Arrington Mountain Alkali Feldspar Granite this report, table DescriptionOfMapUnits Cwb Waynesboro Formation this report, table DescriptionOfMapUnits Dh Hampshire Formation this report, table DescriptionOfMapUnits Db Brallier Formation this report, table DescriptionOfMapUnits Dx Millboro Shale, Huntersville Chert, and Rocky Gap Sandstone this report, table DescriptionOfMapUnits Qw Windsor Formation this report, table DescriptionOfMapUnits Yhm biotite granitoid this report, table DescriptionOfMapUnits Yhd biotite-hornblende granodiorite this report, table DescriptionOfMapUnits Qc Chuckatuck Alloformation this report, table DescriptionOfMapUnits Ofv Interlayered mafic and felsic metavolcanic rocks, foliated felsite this report, table DescriptionOfMapUnits Qk Kent Island Formation this report, table DescriptionOfMapUnits Qj Joynes Neck Sand this report, table DescriptionOfMapUnits m marsh and intertidal mud deposits this report, table DescriptionOfMapUnits ks kyanite schist this report, table DescriptionOfMapUnits DSkq Arvonia Formation, kyanite quartzite and schist this report, table DescriptionOfMapUnits Zrss sillimanite-mica schist of Great Creek this report, table DescriptionOfMapUnits Qwa Wachapreague Formation this report, table DescriptionOfMapUnits Zrbmg biotite-muscovite gneiss this report, table DescriptionOfMapUnits Zrsg biotite-muscovite schist and gneiss this report, table DescriptionOfMapUnits Jd diabase this report, table DescriptionOfMapUnits Jb basalt this report, table DescriptionOfMapUnits Jc Newark Supergroup, conglomerate this report, table DescriptionOfMapUnits mgb exotic blocks within melange units, metagabbro this report, table DescriptionOfMapUnits Zsr Swift Run Formation this report, table DescriptionOfMapUnits Trbr1 Newark Supergroup, breccia, mudstone clasts this report, table DescriptionOfMapUnits OCco Conococheague Formation this report, table DescriptionOfMapUnits mgr exotic blocks within melange units, metagraywacke this report, table DescriptionOfMapUnits Zsg Sabot gneiss this report, table DescriptionOfMapUnits OCcc Chepultepec, Copper Ridge, and Maynardville Formations this report, table DescriptionOfMapUnits ds dune sand this report, table DescriptionOfMapUnits Omlf fine-grained felsic gneiss this report, table DescriptionOfMapUnits Ymc Marshall Metagranite, coarse-grained metagranite this report, table DescriptionOfMapUnits Pzm Maidens Gneiss, porphyroblastic garnet-biotite gneiss this report, table DescriptionOfMapUnits Pw Wise Formation this report, table DescriptionOfMapUnits Pz Norton, New River, Lee, Pocahontas Formations undivided this report, table DescriptionOfMapUnits Pzmgr muscovite granite this report, table DescriptionOfMapUnits Okpl Knobs Formation, Fincastle Conglomerate Member of the Martinsburg Formation, Paperville Shale, and Lenoir and Mosheim Limestones this report, table DescriptionOfMapUnits Pg Wise Formation and Gladesville Sandstone this report, table DescriptionOfMapUnits Pk Kanawha Formation this report, table DescriptionOfMapUnits Ph Harlan Formation this report, table DescriptionOfMapUnits Pn Norton Formation this report, table DescriptionOfMapUnits Pzpm quartzofeldspathic gneiss this report, table DescriptionOfMapUnits Pzpg Petersburg Granite this report, table DescriptionOfMapUnits CZwra Willis Ridge Formation, amphibolite this report, table DescriptionOfMapUnits Trbr Newark Supergroup, breccia, mixed clasts this report, table DescriptionOfMapUnits Water Water this report, table DescriptionOfMapUnits Qnb Nassawadox Formation, Butlers Bluff Member this report, table DescriptionOfMapUnits Obgm Cunningham complex, biotite gneiss of Halifax this report, table DescriptionOfMapUnits Qno Nassawadox Formation, Occohannock Member this report, table DescriptionOfMapUnits Ylr Little River Gneiss this report, table DescriptionOfMapUnits Obi Bear Island Granodiorite this report, table DescriptionOfMapUnits Zfs Fauquier Formation, meta-arkose and metasiltstone this report, table DescriptionOfMapUnits Zfr Flat Rock granite this report, table DescriptionOfMapUnits CZfm Fork Mountain Formation this report, table DescriptionOfMapUnits Ylg Leucogranite gneiss this report, table DescriptionOfMapUnits Zfl Fauquier Formation, laminated metasiltstone and phyllite this report, table DescriptionOfMapUnits Zfc Fauquier Formation, metaconglomerate this report, table DescriptionOfMapUnits Yll lineated leucogranite gneiss this report, table DescriptionOfMapUnits Zfg felsic gneiss this report, table DescriptionOfMapUnits Zam Ashe Formation, biotite gneiss this report, table DescriptionOfMapUnits Zag Aaron Formation, mafic metatuff this report, table DescriptionOfMapUnits Yec Elk Park Plutonic Group, quartz monzonite, quartz monzonite flaser gneiss, quartz monzonite gneiss this report, table DescriptionOfMapUnits Zaa Ashe Formation, amphibolite this report, table DescriptionOfMapUnits Tch Cold Harbor Formation this report, table DescriptionOfMapUnits Zav felsic volcanic and volcaniclastic rocks this report, table DescriptionOfMapUnits Yep Elk Park Plutonic Group, augen gneiss and porphyritic gneiss this report, table DescriptionOfMapUnits Zau Ashe Metamorphic Suite this report, table DescriptionOfMapUnits CZpb Piney Branch Complex this report, table DescriptionOfMapUnits Zap Aaron Formation, phyllitic metasiltstone this report, table DescriptionOfMapUnits Zto metatonalite at Dry Creek this report, table DescriptionOfMapUnits cm polygenetic melange this report, table DescriptionOfMapUnits Yra Roseland anorthosite this report, table DescriptionOfMapUnits CZms Mather Gorge Formation - schist and lesser gneiss, mafic and ultramafic rock debris this report, table DescriptionOfMapUnits Ymgm Massive metagranitoid this report, table DescriptionOfMapUnits Zfa Fauquier Formation, arkosic metasandstone this report, table DescriptionOfMapUnits CZmg Mather Gorge Formation - metagraywacke and schist this report, table DescriptionOfMapUnits Zgdsm Suck Mountain granite this report, table DescriptionOfMapUnits OCgg Goldvein pluton this report, table DescriptionOfMapUnits Zhph Hyco Formation, phyllitic volcantic metasiltstone and metatuff this report, table DescriptionOfMapUnits CZbg Bassett Formation, biotite granitoid gneiss this report, table DescriptionOfMapUnits CZba Bassett Formation, amphibolite this report, table DescriptionOfMapUnits Zrbr Robertson River Igneous Suite, Battle Mountain rhyolite and conglomerate this report, table DescriptionOfMapUnits Mz Mississippian formations undivided this report, table DescriptionOfMapUnits Zgdsr Striped Rock granite this report, table DescriptionOfMapUnits Dma Mahantango Formation this report, table DescriptionOfMapUnits Dmn Millboro Shale and Needmore Formation this report, table DescriptionOfMapUnits OZpm metagraywacke, quartzose schist, and melange this report, table DescriptionOfMapUnits DSz Lower Devonian and Silurian formations undivided this report, table DescriptionOfMapUnits Ola Lahore Complex, amphibole monzonite this report, table DescriptionOfMapUnits Ci Indian Run Formation this report, table DescriptionOfMapUnits Cm Melrose granite this report, table DescriptionOfMapUnits Cl Lunga Reservoir Formation this report, table DescriptionOfMapUnits Cc Conasauga Shale this report, table DescriptionOfMapUnits Oli phyllite and metagraywacke in the Long Island syncline this report, table DescriptionOfMapUnits Olm Lahore Complex, mafic and ultramafic rocks this report, table DescriptionOfMapUnits Ce Elbrook Formation this report, table DescriptionOfMapUnits Olp Lahore Complex, pyroxene monzonite this report, table DescriptionOfMapUnits Cy Yorkshire Formation this report, table DescriptionOfMapUnits Ols Moccasin Formation, Bays Formation, Unit C, Unit B, and Unit A this report, table DescriptionOfMapUnits Olw Leatherwood Granite this report, table DescriptionOfMapUnits rbg biotite gneiss this report, table DescriptionOfMapUnits Cr Pumpkin Valley Shale and Rome Formation this report, table DescriptionOfMapUnits Cp Purcell Branch Formation this report, table DescriptionOfMapUnits Zrms muscovite schist and biotite-muscovite schist this report, table DescriptionOfMapUnits k Kimberlite this report, table DescriptionOfMapUnits Yon Orthopyroxene syenogranite and monzogranite gneiss this report, table DescriptionOfMapUnits Yom orthopyroxene monzogranite-quartz monzodiorite this report, table DescriptionOfMapUnits DSu Ridgeley Sandstone, Helderberg and Cayugan Groups this report, table DescriptionOfMapUnits SOe Ellisville biotite granodiorite this report, table DescriptionOfMapUnits DSxm Devonian and Silurian formations, undivided this report, table DescriptionOfMapUnits Yog Orthopyroxene granite-monzogranite (foliated) this report, table DescriptionOfMapUnits Yod Orthopyroxene granodiorite gneiss this report, table DescriptionOfMapUnits vl exotic blocks within melange units, metavolcanic and metavolcanic clastic phyllite this report, table DescriptionOfMapUnits vo exotic blocks within melange units, felsic/mafic volcanic rocks this report, table DescriptionOfMapUnits PPw muscovite-biotite granite of Wise pluton this report, table DescriptionOfMapUnits SOz Silurian to Middle Ordovician formations undivided this report, table DescriptionOfMapUnits Yor Old Rag granite this report, table DescriptionOfMapUnits Zkr Konnarock Formation this report, table DescriptionOfMapUnits PzZh Holly Corner Gneiss this report, table DescriptionOfMapUnits DSqq Quantico Formation, micaceous quartzite this report, table DescriptionOfMapUnits Ob Beekmantown Group this report, table DescriptionOfMapUnits Pzgm two-mica Alleghanian granite at Moran this report, table DescriptionOfMapUnits Zh Hyco Formation, undivided this report, table DescriptionOfMapUnits Pzgg gneissic metagrantoid east of Kenbridge this report, table DescriptionOfMapUnits psg Pliocene sand and gravel this report, table DescriptionOfMapUnits Pzgr Maidens Gneiss, granite gneiss this report, table DescriptionOfMapUnits Ybmg biotite monzogranite - quartz monzodiorite this report, table DescriptionOfMapUnits Zlas Lynchburg Group: actonilite schist this report, table DescriptionOfMapUnits Otc biotite felsic gneiss of Turnip Creek this report, table DescriptionOfMapUnits Zpm phyllitic metasiltstone this report, table DescriptionOfMapUnits Ou Sequatchie Formation, Reedsville Shale, Trenton Limestone, and Eggleston Formation this report, table DescriptionOfMapUnits Zrbg biotite-quartz-felspar gneiss with minor layers and pods of calcsilicate gneiss this report, table DescriptionOfMapUnits Mpo Pocono Formation this report, table DescriptionOfMapUnits Mpr Price Formation this report, table DescriptionOfMapUnits CZmq Micaceous quartzite this report, table DescriptionOfMapUnits Osgr Shelton Igneous Suite, metagranite and mica gneiss undivided this report, table DescriptionOfMapUnits Ol Lake Jackson pluton this report, table DescriptionOfMapUnits Cevs Evington Group: slate and metasiltstone this report, table DescriptionOfMapUnits Og amphibole metagabbro this report, table DescriptionOfMapUnits Trc Newark Supergroup, conglomerate, mixed clasts this report, table DescriptionOfMapUnits Zclg Country Line Complex, layered gneiss of South Boston this report, table DescriptionOfMapUnits Oz Ordovician formations undivided this report, table DescriptionOfMapUnits Dmrn Marcellus Shale and Needmore Formation this report, table DescriptionOfMapUnits Trs Newark Supergroup, sandstone, undifferentiated this report, table DescriptionOfMapUnits Ot metatonalite this report, table DescriptionOfMapUnits Pbi Buggs Island pluton this report, table DescriptionOfMapUnits Qeg Elsing Green Alloformation this report, table DescriptionOfMapUnits Yoq Orthopyroxene quartz diorite gneiss this report, table DescriptionOfMapUnits Pzhd hornblende diorite this report, table DescriptionOfMapUnits Zgp greenstone and chloritic phyllite this report, table DescriptionOfMapUnits PzZsr metagranite and metaporphyry at Sandy River this report, table DescriptionOfMapUnits Zgs Mount Rogers Formation: Greenstone and interbedded metasedimentary rocks this report, table DescriptionOfMapUnits Zgh hornblende gabbro this report, table DescriptionOfMapUnits Pzwg coarse-grained leucogranite of Westview this report, table DescriptionOfMapUnits Ycm charnockite gneiss this report, table DescriptionOfMapUnits Zgd biotite granodiorite or biotite granite this report, table DescriptionOfMapUnits DSms quartz muscovite biotite gneiss and quartz muscovite schist this report, table DescriptionOfMapUnits Ydg Dioritic gneiss this report, table DescriptionOfMapUnits Cch Chilhowee Group this report, table DescriptionOfMapUnits br microbreccia this report, table DescriptionOfMapUnits Ost Shelton Igneous Suite, biotite granite orthogneiss this report, table DescriptionOfMapUnits CZab Alligator Back Metamorphic Suite this report, table DescriptionOfMapUnits bgp porphyroblastic biotite gneiss this report, table DescriptionOfMapUnits bgr Burkeville pluton this report, table DescriptionOfMapUnits Cmvs Interlayered felsic and mafic metavolcanic and metasedimentary rocks- greenstone or amphibole gneiss this report, table DescriptionOfMapUnits PMp Pocahontas Formation this report, table DescriptionOfMapUnits Zc Catoctin Formation, Metabasalt this report, table DescriptionOfMapUnits Qcc Charles City Alloformation this report, table DescriptionOfMapUnits PMf Falmouth Intrusive Suite this report, table DescriptionOfMapUnits PMl Lee Formation this report, table DescriptionOfMapUnits Pzlgn lineated biotite granite gneiss this report, table DescriptionOfMapUnits Zlg Lynchburg Group, graphitic phyllite and metasiltstone this report, table DescriptionOfMapUnits Zlb Catoctin Formation, Metabasalt breccia (low-titanium) this report, table DescriptionOfMapUnits Zll Lynchburg Group, metagraywacke this report, table DescriptionOfMapUnits Zlu Lynchburg Group, upper part this report, table DescriptionOfMapUnits Qms Moorings unit, muddy sand this report, table DescriptionOfMapUnits Trcs Newark Supergroup, sandstone, siltstone, shale, and coal, interbedded this report, table DescriptionOfMapUnits OZI Mine Run Complex, melange zone I this report, table DescriptionOfMapUnits um exotic blocks within melange units, ultramafic rocks this report, table DescriptionOfMapUnits Trcm conglomerate in Randolph basin this report, table DescriptionOfMapUnits af artificial fill this report, table DescriptionOfMapUnits am amphibolite this report, table DescriptionOfMapUnits al alluvium this report, table DescriptionOfMapUnits Tl Lower Tertiary deposits this report, table DescriptionOfMapUnits CZwr Willis Ridge Formation this report, table DescriptionOfMapUnits Tc Chesapeake Group this report, table DescriptionOfMapUnits Cgi Georgetown Intrusive Suite this report, table DescriptionOfMapUnits Yblg biotite-muscovite leucogranite gneiss this report, table DescriptionOfMapUnits Zgrd metagranite and metagranodiorite at Snail Creek this report, table DescriptionOfMapUnits PzZgn mica gneiss and metagranite, undivided this report, table DescriptionOfMapUnits Zbgo metagranite of Orgainsville this report, table DescriptionOfMapUnits Zcmb Catoctin Formation, Metabasalt this report, table DescriptionOfMapUnits Zum ultramafic rocks this report, table DescriptionOfMapUnits Pzga2 hornblende-plagioclase gabbro, Carolina Terrain this report, table DescriptionOfMapUnits Pzga1 hornblende-plagioclase gabbro, Chopawamsic Terrain this report, table DescriptionOfMapUnits IdentityConfidence Confidence that feature is correctly identified. GeMS certain Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema)—A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p. Label Plain-text equivalent of the desired annotation for a feature: for example "14 Ma", or "^c" which (when used with the FGDC GeoAge font) results in the geologic map-unit label TRc (with TR run together to make the Triassic symbol). GeMS Unrepresentable domain. Symbol Reference to a point marker, line symbol, or area-fill symbol that is used on the map graphic to denote the feature: perhaps a star for a K-Ar age locality, or a heavy black line for a fault. GeMS Unrepresentable domain. DataSourceID Source of data; foreign key to table DataSources. GeMS DAS309 Henika, W.S., 2011, Geologic map of the Hardy quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 2011-3, Map Scale 1:24,000. this report, table DataSources DAS308 Henika, W.S., 2011, Geologic map of the Garden City quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 2011-2, 1:24,000-scale geologic map. this report, table DataSources DAS762 Witt, A.C., Heller, M.J., Occhi, M.E., Spears, D.B., Lang, K.E., Berquist, C.R. Jr., and Prince, P.S., editors, 2021, Statewide Geologic Map Database of Virginia: Virginia Department of Energy, Geology and Mineral Resources Program, Open-file Report 2021-12, scale 1:250,000. this report, table DataSources DAS258 Gilmer, A.K. and Berquist C.R., Jr., 2015, Geologic map of the Tunstall quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Publication 182, 1:24,000-scale geologic map. this report, table DataSources DAS107 Carter, M.W., 2008, Bedrock geologic map of the Amherst quadrangle, Virginia: Virginia Department of Mines, Minerals and Energy, Division of Geology and Mineral Resources Open-File Report 08-02, 1:24,000-scale geologic map. this report, table DataSources DAS764 Owens, B.E., 2010, Geology in the Heart of Virginia: the central Piedmont: 40th Annual Virginia Geological Field Conference Guidebook, 28 p. this report, table DataSources DAS578 Spears, D.B., 2011, Geologic map of the Lakeside Village quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Publication 177, 1:24,000-scale geologic map and report. this report, table DataSources DAS223 Evans, N.H., 2017, Geology of the Zion Crossroads quadrangle, Virginia: Virginia Division of Geology and Mineral Resources, Open-File Report 17-04, 1:24,000-scale geologic map. this report, table DataSources DAS704 Henika, W.S., 2002, Geologic map of the Virginia portion of the Danville 30- x 60-minute quadrangle, Virginia Division of Mineral Resources Publication 166, 1:100,000-scale map. this report, table DataSources DAS679 Mixon, R.B., Pavlides, L., Powars, D.S., Froelich, A.J., Weems, R.E., Schindler, J.S., Newell, W.L., Edwards, L.E., and Ward, L.W., 2000, Geologic Map of the Fredericksburg 30’ x 60’ Quadrangle, Virginia and Maryland: U.S. Geological Survey Geologic Investigation Series Map I-2607, scale 1:24,000. this report, table DataSources DAS700 Southworth, C.S., Aleinikoff, J.N., Bailey, C.M., Burton, W.C., Crider, E.A., Hackley, P.A., Smoot, J.P. and Tollo, R.P., Geologic map of the Shenandoah National Park Region, Virginia: U.S. Geological Survey Open-file Report 2009-1153, 1:100,000-scale map. this report, table DataSources DAS703 Henika, W.S., 1997, Geologic map of the Roanoke 30- x 60-minute quadrangle, Virginia Division of Mineral Resources Publication 148, 1:100,000-scale map. this report, table DataSources DAS745 Horton, J.W., Jr., Peper, J.D., Burton, W.C., Weems, R.E., and Sacks, P.E., in press, Geologic map of the South Boston 30' x 60' quadrangle, Virginia and North Carolina: U.S. Geological Survey Scientific Investigations Map. this report, table DataSources DAS709 Carter, M.W., Burton, W.C., McAleer, R.J., DiGiacomo-Cohen, M.L., and Sauer, R.T., 2019, Geology of the Mineral and Lake Anna West quadrangles, Virginia: Virginia Division of Geology and Mineral Resources Publication 189. this report, table DataSources DAS476 Pavlides, L., 1990, Geology of part of the northern Virginia Piedmont: U.S. Geological Survey, Open File Report 90-548. this report, table DataSources DAS312 Henika, W.S., 2014, Interstate 81 Corridor Digital Geologic Compilation: Pilot quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 14-04, 1:24,000-scale geologic map. this report, table DataSources DAS313 Henika, W.S., 2015, Interstate 81 Corridor Digital Geologic Compilation: Check quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 15-01, 1:24,000-scale geologic map. this report, table DataSources DAS311 Henika, W.S., 2013, Interstate 81 Corridor Digital Geologic Compilation: Riner quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 13-05, 1:24,000-scale geologic map. this report, table DataSources DAS314 Henika, W.S., 2016, Geologic map of Callaway quadrangle, Virginia: Virginia Division of Geology and Mineral Resources, Open-File Report 16-04, 1:24,000-scale geologic map. this report, table DataSources DAS692 Carter, M.W., Crider, E.A., Southworth, C.S., and Aleinikoff, J.N., 2016, Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7DN434F this report, table DataSources DAS716 Spears, D.B. and Evans, N.H., 2019, Geologic map of the Cartersville quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open-file Report 2019-06, 1:24,000-scale map. this report, table DataSources DAS717 Spears, D.B. and Occhi, M.E., 2020, Geologic map of the Midlothian quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open-file Report 2020-05, 1:24,000-scale map. this report, table DataSources DAS686 U.S. Geological Survey, 2012, National Hydrography Dataset Best Resolution (NHD). Available online: https://www.usgs.gov/core-science-systems/ngp/national-hydrography this report, table DataSources DAS759 Rader, E.K. and Evans, N.H., editors, 1993, Geologic map of Virginia - expanded explanation: Virginia Division of Mineral Resources, 80 p. this report, table DataSources DAS695 Heller, M.J. and Smith, M.S., Geologic map of the Peaks of Otter quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open-file Report 2018-07, 1:24,000-scale map. this report, table DataSources DAS710 Bailey, C.M., Flansburg, M.E., Lang, K.E., and Biggs, T.H., in preparation, Geologic Map of Albemarle County, Virginia, Colllege of William and Mary, approximately 1:50,000-scale map. this report, table DataSources DAS420 Miller, R.L. and Fuller, J.O., 1947, Geologic and structure contour map of the Rose Hill oilfield, Lee County, Va.: U.S. Geological Survey Oil and Gas Investigations Series Preliminary Map 76. this report, table DataSources DAS014 Bailey, C.M., Koteas, G.C., Relyea, J.A., Weikel, E.O., Dubose, J., and Goodman, M.C., 2005, Geologic map of the Columbia 7.5-minute quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open-File Report 05-02, 1:24,000-scale geologic map. this report, table DataSources DAS134 Cooper, B.N. and Cooper, G.A., 1946, Lower Middle Ordovician stratigraphy of the Shenandoah Valley, Virginia: Geological Society of America Bulletin, v. 57, p. 57-92. this report, table DataSources DAS760 Bailey, C.M. and Tollo, R.P., 1998, Late Neoproterozoic extension-related emplacement in the Central Appalachians: An example from the Polly Wright Cove pluton: Journal of Geology, v. 106, n. 3, pp. 347-360. this report, table DataSources DAS482 Peper, J.D. and Hackley, P.C., 2006, Geologic map of the Green Bay 7.5-minute quadrangle, Prince Edward County, Virginia: U.S. Geological Survey Open-File Report 99-423, 1:24,000-scale geologic map. this report, table DataSources DAS580 Spears, D.B., Evans, N.H., and Gilmer, A.K., 2013, Geologic map of the Pendleton quadrangle, Virginia: Virginia Division of Geology and Mineral Resources Open File Report 13-04, 1:24,000-scale geologic map. this report, table DataSources Notes Additional information specific to a particular feature or table entry. GeMS Unrepresentable domain. Free text. Values of <null> or #null indicate no entry. MapUnitPolys_ID Primary key. GeMS Arbitrary string. Values should be unique within this database. created_user An ArcGIS-generated editor tracking field. GeMS ESRI created_date An ArcGIS-generated editor tracking field. GeMS ESRI last_edited_user An ArcGIS-generated editor tracking field. GeMS ESRI last_edited_date An ArcGIS-generated editor tracking field. GeMS ESRI RuleID Indicates the corresponding symbology rule in Cartographic Representations. For each feature class, values of either the Symbol attribute or the RuleID attribute should be non-null. GeMS ESRI Override Indicates exceptions to the corresponding symbology rule in Cartographic Representations. GeMS ESRI AdditionalNotes Additional information specific to a particular feature or table entry. GeMS this report Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 dataset EPSG 8.2.10(10.3.1) Simple FALSE 7825 TRUE FALSE