Metadata: Identification_Information: Citation: Citation_Information: Originator: John D. Peper Originator: Lucy B. McCartan Originator: J. Wright Horton, Jr. Originator: James E. Reddy Publication_Date: 2001 Title: Preliminary Lithogeochemical Map Showing Near-Surface Rock Types in the Chesapeake Bay Watershed, Virginia and Maryland Edition: 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 01-187 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/openfile/of01-187/ Description: Abstract: This preliminary experimental lithogeochemical map shows the distribution of rock types in the Virginia and Maryland parts of the Chesapeake Bay watershed. The map was produced digitally by classifying geologic-map units according to composition, mineralogy, and texture; rather than by age and stratigraphic relationships as shown on traditional geologic maps. This map differs from most lithologic maps in that the lithogeochemical unit classification distinguishes those rock units having key water-reactive minerals that may induce acid neutralization, or reduction, of hosted water at the weathering interface. The validity of these rock units, however, is independent of water chemistry, because the rock units are derived from geologic maps and rock descriptions. Areas of high soil carbon content, and sulfide metal deposits are also shown. Water-reactive minerals and their weathering reactions yield five lithogeochemical unit classes: 1) carbonate rock and calcareous rocks and sediments, the most acid-neutralizing; 2)carbonaceous-sulfidic rocks and sediments, oxygen-depleting and reducing; 3) quartzofeldspathic rocks and siliciclastic sediments, relatively weakly reactive with water; 4) mafic silicate rocks/sediments, oxygen consuming and high solute-load delivering; and, 5) the rarer calcareous-sulfidic (carbonaceous) rocks, neutralizing and reducing. Earlier studies in some parts of the map area have related solute loads in ground and stream waters to some aspects of bedrock lithology. More recent preliminary tests of relationships between four of the classes of mapped lithogeochemical units and ground water chemistry, in the Mid-Atlantic area using this map, have focused on and verified the nitrate-reducing and acid-neutralizing properties of some bedrock and unconsolidated aquifer rock types. Sulfide mineral deposits and their mine-tailings effects on waters are beginning to be studied by others. Additional testing of relationships among the lithogeochemical units and aspects of ground and surface water chemistry could help to refine the lithogeochemical classification, and this map. The testing could also improve the usefulness of the map for assessing aquifer reactivity and the transport properties of reactive contaminants such as acid rain, and nitrate from agricultural sources, in the Chesapeake Bay watershed. Purpose: The purpose of this preliminary digital map is to provide a geographically referenced data base showing regional patterns in the distribution of rock types in the Virginia and Maryland parts of the Chesapeake Bay watershed. The map may be used to evaluate the hypothesis that lithology of rocks and sediments significantly influences the chemistry and quality of waters traveling over and through them on a regional scale. Supplemental_Information: Data were originally collected in UTM coordinates, zone 18, NAD 1927, and projected to geographic coordinates (Lat/Long), NAD 1983. The data base is accompanied by a large format color map, a readme.txt file, and a explanatory PDF pamphlet. Data_Set_Structure: Data_Set_Part: Part_Type: Arc/Info coverages, INFO tables, and their export-interchange file equivalents (files with *.e00 extensions) Part_Name: Maryland and Virginia geologic map data Part_Description: These coverages and INFO tables provide the scientific content of the mapped data Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: GEOLOGY Part_Description: Polygon coverage for the contacts of geologic map units Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: LITHOGEO Part_Description: Polygon coverage for the contacts of lithogeochemical map units Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: CARBON Part_Description: Polygon coverage of the carbon-rich soils Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: SULFIDE Part_Description: Point coverage of sulfide deposits Data_Set_Part: Part_Type: INFO table Part_Name: GEOLLITH Part_Description: INFO table that relates the items GEOL_CODE and LITH_CODE Data_Set_Part: Part_Type: INFO table Part_Name: LITHTBL Part_Description: INFO table that relates the item LITH_CODE to the following items: ROCK_TYPE_GROUP, SUB_GROUP, MAP_UNIT, ROCK_TYPE_CLASS, MINERALOGY, and WATER_CHEMISTRY Data_Set_Part: Part_Type: INFO table Part_Name: TBL_REL Part_Description: INFO table that stores the relate environments for the INFO tables GEOLLITH and LITHTBL Data_Set_Part: Part_Type: Arc/Info coverages and their export-interchange file equivalents (files with *.e00 extensions) Part_Name: Maryland and Virginia base map data Part_Description: These coverages provide the base map to which the geologic information is geographically registered Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: POLBND Part_Description: Polygon coverage of county boundaries Data_Set_Part: Part_Type: ArcView shapefiles (*.dbf, *.shp, *.shx) and related DBF tables Part_Name: Maryland and Virginia geologic map data Part_Description: These shapefiles and DBF tables provide the scientific content of the mapped data Data_Set_Part: Part_Type: ArcView shapefiles Part_Name: GEOLOGY.* Part_Description: Shapefiles for the contacts of geologic map units Data_Set_Part: Part_Type: ArcView shapefiles Part_Name: LITHOGEO.* Part_Description: Shapefiles for the contacts of lithogeochemical map units Data_Set_Part: Part_Type: ArcView shapefiles Part_Name: CARBON.* Part_Description: Shapefiles for the carbon-rich soils Data_Set_Part: Part_Type: ArcView shapefiles Part_Name: SULFIDE.* Part_Description: Shapefiles for the sulfide deposits Data_Set_Part: Part_Type: DBF table Part_Name: GEOLLITH.DBF Part_Description: DBF table that relates the items GEOL_CODE and LITH_CODE Data_Set_Part: Part_Type: DBF table Part_Name: LITHTBL.DBF Part_Description: DBF table that relates the item LITH_CODE to the following items: ROCK_GROUP, SUB_GROUP, MAP_UNIT, ROCK_CLASS, MINERALOGY, and WATER_CHEM Data_Set_Part: Part_Type: ArcView shapefiles (*.dbf, *.shp, *.shx) Part_Name: Maryland and Virginia base map data Part_Description: These shapefiles provide the base map to which the geologic information is geographically registered Data_Set_Part: Part_Type: ArcView shapefiles Part_Name: POLBND.* Part_Description: Shapefiles for the county boundaries Data_Set_Part: Part_Type: Abicas delimited ASCII files (*.def, *.pfa, *.pxy, *.un, *.xfa) and related delimited ASCII tables (*.txt) Part_Name: Maryland and Virginia geologic map data Part_Description: These Abicas ASCII files provide the scientific content of the mapped data Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: GEOLOGY.* Part_Description: Abicas files for the contacts of geologic map units Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: LITHOGEO.* Part_Description: Abicas files for the contacts of lithogeochemical map units Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: CARBON.* Part_Description: Abicas files for the carbon-rich soils Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: SULFIDE.* Part_Description: Abicas files for the sulfide deposits Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: GEOLLITH.* Part_Description: Table that relates the items GEOL_CODE and LITH_CODE Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: LITHTBL.* Part_Description: Table that relates the item LITH_CODE to the following items: ROCK_TYPE_GROUP, SUB_GROUP, MAP_UNIT, ROCK_TYPE_CLASS, MINERALOGY, and WATER_CHEMISTRY Data_Set_Part: Part_Type: Abicas delimited ASCII files (*.def, *.pfa, *.pxy, *.un, *.xfa) Part_Name: Maryland and Virginia base map data Part_Description: These Abicas ASCII files provide the base map to which the geologic information is geographically registered Data_Set_Part: Part_Type: Abicas ASCII files Part_Name: POLBND.* Part_Description: Abicas files for the county boundaries Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1995 Ending_Date: 2001 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -80.75 East_Bounding_Coordinate: -75.00 North_Bounding_Coordinate: 39.75 South_Bounding_Coordinate: 36.50 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Virginia Theme_Keyword: Maryland Theme_Keyword: Chesapeake Theme_Keyword: Bay Theme_Keyword: Watershed Theme_Keyword: Lithogeochemical Theme_Keyword: Geologic Theme_Keyword: Geology Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: None Place_Keyword: Virginia Place_Keyword: Maryland Place_Keyword: Chesapeake Place_Keyword: Bay Place_Keyword: Watershed Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0 Place_Keyword: US24 = Maryland Place_Keyword: 51001 = Accomack Place_Keyword: 51003 = Albemarle Place_Keyword: 51005 = Alleghany Place_Keyword: 51007 = Amelia Place_Keyword: 51009 = Amherst Place_Keyword: 51011 = Appomattox Place_Keyword: 51013 = Arlington Place_Keyword: 51015 = Augusta Place_Keyword: 51017 = Bath Place_Keyword: 51019 = Bedford Place_Keyword: 51023 = Botetourt Place_Keyword: 51029 = Buckingham Place_Keyword: 51031 = Campbell Place_Keyword: 51033 = Caroline Place_Keyword: 51036 = Charles City Place_Keyword: 51041 = Chesterfield Place_Keyword: 51043 = Clarke Place_Keyword: 51045 = Craig Place_Keyword: 51047 = Culpeper Place_Keyword: 51049 = Cumberland Place_Keyword: 51053 = Dinwiddie Place_Keyword: 51057 = Essex Place_Keyword: 51059 = Fairfax Place_Keyword: 51061 = Fauquier Place_Keyword: 51065 = Fluvanna Place_Keyword: 51069 = Frederick Place_Keyword: 51071 = Giles Place_Keyword: 51073 = Gloucester Place_Keyword: 51075 = Goochland Place_Keyword: 51079 = Greene Place_Keyword: 51085 = Hanover Place_Keyword: 51087 = Henrico Place_Keyword: 51091 = Highland Place_Keyword: 51093 = Isle of Wight Place_Keyword: 51095 = James City Place_Keyword: 51099 = King George Place_Keyword: 51101 = King William Place_Keyword: 51097 = King and Queen Place_Keyword: 51103 = Lancaster Place_Keyword: 51107 = Loudoun Place_Keyword: 51109 = Louisa Place_Keyword: 51113 = Madison Place_Keyword: 51115 = Mathews Place_Keyword: 51119 = Middlesex Place_Keyword: 51121 = Montgomery Place_Keyword: 51125 = Nelson Place_Keyword: 51127 = New Kent Place_Keyword: 51131 = Northampton Place_Keyword: 51133 = Northumberland Place_Keyword: 51135 = Nottoway Place_Keyword: 51137 = Orange Place_Keyword: 51139 = Page Place_Keyword: 51145 = Powhatan Place_Keyword: 51147 = Prince Edward Place_Keyword: 51149 = Prince George Place_Keyword: 51153 = Prince William Place_Keyword: 51157 = Rappahannock Place_Keyword: 51159 = Richmond Place_Keyword: 51161 = Roanoke Place_Keyword: 51163 = Rockbridge Place_Keyword: 51165 = Rockingham Place_Keyword: 51171 = Shenandoah Place_Keyword: 51177 = Spotsylvania Place_Keyword: 51179 = Stafford Place_Keyword: 51181 = Surry Place_Keyword: 51187 = Warren Place_Keyword: 51193 = Westmoreland Place_Keyword: 51199 = York Access_Constraints: None Use_Constraints: Although all data released in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: J. Wright Horton, Jr. Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing address Address: National Center, MS926A City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6933 Contact_Facsimile_Telephone: 703-648-6953 Contact_Electronic_Mail_Address: whorton@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Reduced-size image showing the general layout of map sheet. 864x597 pixels, 24-bit color. Browse_Graphic_File_Type: GIF Data_Quality_Information: Logical_Consistency_Report: Polygon and chain-node topology present Completeness_Report: All lithogeochemical polygons in this report were derived from digitized Maryland and Virginia state geologic maps. Digital compilation of the Virginia geologic data was completed in 1998. Subsequent to the beginning of this study, the Virginia Division of Mineral Resources completed a revision of the data set. However, the Virginia geologic data used to prepare this report was taken from the earlier data set. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Cleaves and others Publication_Date: 1968 Title: Geologic Map of Maryland Online_Linkage: http://www.mgs.md.gov/index.html Source_Scale_Denominator: 250000 Type_of_Source_Media: Paper map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1968 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Cleaves (1968) Source_Contribution: Provided geology for Maryland. Used to produce digital polygon data of Maryland geology. Process_Step: Process_Description: Geology was mapped by Cleaves and others and published in 1968. The geologic map was scanned using an Anatech Eagle 4080T scanner. The raster files were then converted to Abicas map image format and the geologic information was digitized as 30' x 60' tiles. The Abicas files were converted to Arc/Info format. Arc/Info versions 7.2.1 and 8.0.2 were used to assemble the individual tiles into a statewide geologic coverage containing geologic and lithogeochemical attributes. The statewide coverage was clipped to the Chesapeake Bay Watershed boundary. Digital compilation was completed in 2001. The Arc/Info coverage was converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 2001 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Maryland Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 2300 St. Paul Street City: Baltimore State_or_Province: MD Postal_Code: 21218 Contact_Voice_Telephone: (410) 554-5500 Source_Information: Source_Citation: Citation_Information: Originator: Virginia Division of Mineral Resources Publication_Date: 1993 Title: Geologic Map of Virginia Other_Citation_Details: Online_Linkage: http://www.mme.state.va.us/DMR/home.dmr.html Source_Scale_Denominator: 500000 Type_of_Source_Media: Paper map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1993 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: Virginia Division of Mineral Resources (1993) Source_Contribution: Provided geology for Virginia. Used to produce digital polygon data of Virginia geology. Process_Step: Process_Description: Geology was mapped by the Virginia Division of Mineral Resources and published in 1993. The geologic map was scanned using an Anatech Eagle 4080T scanner. The raster files were then converted to Abicas map image format and the geologic information was digitized as 30' x 60' tiles. The Abicas files were converted to Arc/Info format. Arc/Info versions 7.2.1 and 8.0.2 were used to assemble the individual tiles into a statewide geologic coverage containing geologic and lithogeochemical attributes. The statewide coverage was clipped to the Chesapeake Bay Watershed boundary. Digital compilation was completed in 2001. The Arc/Info coverage was converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 2001 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Virginia Department of Mines, Minerals and Energy; Division of Mineral Resources Contact_Address: Address_Type: mailing address Address: P.O. Box 3667 City: Charlottesville State_or_Province: VA Postal_Code: 22903 Contact_Voice_Telephone: (804) 951-6340 Source_Information: Source_Citation: Citation_Information: Originator: U.S. Department of Agriculture, Soil Conservation Service Publication_Date: 1994 Title: State Soil Geographic (STATSGO) data base for Maryland Source_Scale_Denominator: 250000 Type_of_Source_Media: Digital general soil association map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: STATSGO Maryland (1994) Source_Contribution: Provided soil data for Maryland. Used to produce digital polygon data of Maryland carbon-rich soils. Process_Step: Process_Description: STATSGO data base was compiled by the U.S. Department of Agriculture, Soil Conservation Service and published in 1994. Arc/Info version 7.1.2 was used to create an INFO table named OC13MAPUNIT from the data base. The table OC13MAPUNIT contains, for each soil map unit (MUID) in Maryland, a value of the soil organic carbon in the total soil profile. This value is stored in an item named OC.M.G.M2 (for organic carbon, mapunit, grams, meters squared). The Arc/Info command JOINITEM was used to add the item OC.M.G.M2 to the .pat table for the CARBON coverage. The Arc/Info coverage was converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 1998 Source_Information: Source_Citation: Citation_Information: Originator: U.S. Department of Agriculture, Soil Conservation Service Publication_Date: 1994 Title: State Soil Geographic (STATSGO) data base for Virginia Source_Scale_Denominator: 250000 Type_of_Source_Media: Digital general soil association map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: STATSGO Virginia (1994) Source_Contribution: Provided soil data for Virginia. Used to produce digital polygon data of Virginia carbon-rich soils. Process_Step: Process_Description: STATSGO data base was compiled by the U.S. Department of Agriculture, Soil Conservation Service and published in 1994. Arc/Info version 7.1.2 was used to create an INFO table named OC13MAPUNIT from the data base. The table OC13MAPUNIT contains, for each soil map unit (MUID) in Virginia, a value of the soil organic carbon in the total soil profile. This value is stored in an item named OC.M.G.M2 (for organic carbon, mapunit, grams, meters squared). The Arc/Info command JOINITEM was used to add the item OC.M.G.M2 to the .pat table for the CARBON coverage. The Arc/Info coverage was converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 1998 Source_Information: Source_Citation: Citation_Information: Originator: Lipin, B. Originator: Mason, Jr., George T. Originator: McFaul, E.J. Publication_Date: 1998 Title: Mineral Resources Data System (MRDS) Release-2 Series_Information: Series_Name: U.S. Geological Survey Digital Data Series Issue_Identification: DDS-20 Release-2 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Type_of_Source_Media: Digital records of metallic and nonmetallic mineral resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1972 Ending_Date: 1998 Source_Currentness_Reference: Period in which information was added to the MRDS Source_Citation_Abbreviation: MRDS (1998) Source_Contribution: Provided sulfide data for Maryland and Virginia. Used to produce digital point data of Maryland and Virginia sulfide deposits. Process_Step: Process_Description: MRDS data base was compiled by the U.S. Geological Survey between 1972 and 1998 and published in 1998. Arc/Info version 7.1.2 was used to create Maryland and Virginia statewide point coverages from the MRDS data base. The statewide coverages were clipped to the Chesapeake Bay Watershed boundary to create the SULFIDE coverages. The Arc/Info coverages were converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 1998 Source_Information: Source_Citation: Citation_Information: Originator: Chesapeake Bay Program Publication_Date: 1998 Title: Mid-Atlantic States County Boundaries Source_Scale_Denominator: 100000 Type_of_Source_Media: Arc/Info coverage Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Publication date Source_Citation_Abbreviation: CBP Source_Contribution: Provided base map data. Used to produce polygon coverages of county boundaries for Maryland and Virginia Process_Step: Process_Description: Digital Line Graph (DLG) files of county boundaries at 1:100,000-scale were created by the U.S. Geological Survey as 15' x 15' tiles. The Chesapeake Bay Program used the USGS DLG files to create a Mid-Atlantic States County Boundaries data layer in Arc/Info coverage format. The Mid-Atlantic regional coverage was obtained from http://www.chesapeakebay.net/data/index.htm and clipped to the Chesapeake Bay Watershed boundary to create the POLBND coverages for Maryland and Virginia. The Arc/Info coverages were converted to Abicas, Arc/Info export-interchange, and ArcView shapefile formats. Process_Date: 1998 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.001 Longitude_Resolution: 0.001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: >The following is a brief description of the data layers, tables, and their associated attributes that are used in this report. > >GEOLOGIC DATA: >CARBON - polygon data layer of carbon-rich soils: > MUID - map unit identifier derived from STATSGO data base > OC.M.G.M2 - value for soil organic carbon in square meters > >GEOLOGY - polygon data layer of the contacts of geologic map units: > GEOL_CODE - geologic map unit code > >LITHOGEO - polygon data layer of the contacts of lithogeochemical map units: > LITH_CODE - lithogeochemical map unit code > >SULFIDE - point data layer of sulfide deposits: > STATE_CODE - state code > SITE - deposit name > LAT - latitude > LONG - longitude > COMMOD - commodities present > MAJOR - major products > MINOR - minor products > TRACE - trace or occurrence commodity > DEP_TYPE - deposit types > MODEL - USGS model name > DEP_SIZE - size of deposit > >GEOLLITH - data table that relates GEOL_CODE to LITH_CODE: > GEOL_CODE - geologic map unit code > LITH_CODE - lithogeochemical map unit code > >LITHTBL - data table that relates LITH_CODE to ROCK_TYPE_GROUP, SUB_GROUP, MAP_UNIT, ROCK_TYPE_CLASS, MINERALOGY, and WATER_CHEMISTRY: > LITH_CODE - lithogeochemical map unit code > ROCK_TYPE_GROUP - rock type; e.g., sedimentary rocks and their metamorphic equivalents > SUB_GROUP - rock type sub group; e.g., carbonate-rich rock > MAP_UNIT - map unit; e.g., limestone > ROCK_TYPE_CLASS - rock class; e.g., carbonate-bearing rock > MINERALOGY - mineralogical properties; e.g., quartz-, and feldspar-rich rock > WATER_CHEMISTRY - suggested water chemistry; e.g., low acid-neutralizing capacity > >BASE DATA: >POLBND - polygon data layer of county boundaries: > STATECTY - map unit identifier derived from the Chesapeake Bay Program data > ST - state identifier > CNTYNAME - county name > POLYTYPE - feature identifier derived from the Chesapeake Bay Program data Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/openfile/of01-187/of01187.pdf Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: J. Wright Horton, Jr. Contact_Address: Address_Type: Mailing address Address: National Center, MS926A City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6933 Contact_Facsimile_Telephone: 703-648-6953 Contact_Electronic_Mail_Address: whorton@usgs.gov Hours_of_Service: Monday - Friday 9:00 - 5:00 EST Resource_Description: USGS Open-File Report 01-187 Distribution_Liability: These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed in this report, and represents that its use would not infringe privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data or related materials. Reference therein to any specific commercial product, process, or related service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Arc/Info export-interchange Format_Version_Number: 8.0.2 Format_Information_Content: Geologic and lithogeochemical contacts, carbon-rich soils, sulfide deposits, and county boundaries File_Decompression_Technique: WinZip, gzip and tar Transfer_Size: 7.0 megabytes Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/openfile/of01-187/ Fees: None Metadata_Reference_Information: Metadata_Date: 20010830 Metadata_Review_Date: 20011121 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: James E. Reddy Contact_Address: Address_Type: Mailing address Address: 30 Brown Road City: Ithaca State_or_Province: New York Postal_Code: 14850 Country: USA Contact_Voice_Telephone: 607-266-0217, x3014 Contact_Facsimile_Telephone: 607-266-0521 Contact_Electronic_Mail_Address: jreddy@usgs.gov Hours_of_Service: Monday - Friday 9:00 - 5:00 EST Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Extensions: Online_Linkage: http://geology.usgs.gov/tools/metadata/tools/ext/parts.ext