Metadata: Identification_Information: Citation: Citation_Information: Originator: Adam M. Davis Originator: C. Scott Southworth Originator: J. Stephen Schindler Originator: James E. Reddy Publication_Date: 2001 Title: Geologic Map Database of the Washington DC Area Featuring Data From Three 30 X 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg Edition: 1.0 Geospatial_Data_Presentation_Form: Tabular digital data and map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 01-227 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2001/of01-227/ Description: Abstract: The Washington DC Area geologic map database (DCDB) provides geologic map information of areas to the NW, W, and SW of Washington, DC to various professionals and private citizens who have uses for geologic data. Digital, geographically referenced, geologic data is more versatile than traditional hard copy maps, and facilitates the examination of relationships between numerous aspects of the geology and other types of data such as: land-use data, vegetation characteristics, surface water flow and chemistry, and various types of remotely sensed images. The DCDB was created by combining Arc/Info coverages, designing a Microsoft (MS) Access database, and populating this database. Proposed improvements to the DCDB include the addition of more geochemical, structural, and hydrologic data. Purpose: Geology was researched and compiled for use in studies of ecosystem health, environmental impact, soils, groundwater, land use, tectonics, crustal genesis, sedimentary provenance, and any others that could benefit from geographically referenced geological data. Supplemental_Information: Data are provided in several common GIS formats and MS Access database files. The geologic data themes included are bedrock, surficial, faults and fold axes, neat line, structural data, and sinkholes; the base themes are political boundaries, roads, elevation contours, and hydrography. 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 large format color maps, 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: 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: BEDROCK Part_Description: Polygon coverage for the contacts of bedrock geologic map units Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: FAULT Part_Description: Line coverage for the geologic faults and folds Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: NEAT Part_Description: Line coverage of the map neatline Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: SINK Part_Description: Point coverage of sinkhole locations Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: STRUCTURE Part_Description: Point coverage of geologic structure Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: SURFICIAL Part_Description: Polygon coverage for the contacts of surficial geologic map units Data_Set_Part: Part_Type: Arc/Info coverages and their export-interchange file equivalents (files with *.e00 extensions) Part_Name: 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 state and county boundaries Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: ROADS Part_Description: Line coverage of major highways Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: TOPO Part_Description: Line coverage of elevation contours Data_Set_Part: Part_Type: Arc/Info coverage Part_Name: HYDRO Part_Description: Polygon coverage of major water bodies Data_Set_Part: Part_Type: ArcView shapefiles (*.dbf, *.shp, *.shx) and related DBF tables Part_Name: Geologic map data Part_Description: These shapefiles and DBF tables provide the scientific content of the mapped data Data_Set_Part: Part_Type: ArcView shapefile Part_Name: BEDROCK.* Part_Description: Shapefiles for the contacts of bedrock geologic map units Data_Set_Part: Part_Type: ArcView shapefile Part_Name: FAULT.* Part_Description: Shapefiles for the geologic faults and folds Data_Set_Part: Part_Type: ArcView shapefile Part_Name: NEAT.* Part_Description: Shapefiles for the map neatline Data_Set_Part: Part_Type: ArcView shapefile Part_Name: SINK.* Part_Description: Shapefiles for sinkhole locations Data_Set_Part: Part_Type: ArcView shapefile Part_Name: STRUCTURE.* Part_Description: Shapefiles for geologic structure Data_Set_Part: Part_Type: ArcView shapefile Part_Name: SURFICIAL.* Part_Description: Shapefiles for the contacts of surficial geologic map units Data_Set_Part: Part_Type: ArcView shapefile (*.dbf, *.shp, *.shx) Part_Name: 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 shapefile Part_Name: POLBND.* Part_Description: Shapefiles for state and county boundaries Data_Set_Part: Part_Type: ArcView shapefile Part_Name: ROADS.* Part_Description: Shapefiles for major highways Data_Set_Part: Part_Type: ArcView shapefile Part_Name: TOPO.* Part_Description: Shapefiles for elevation contours Data_Set_Part: Part_Type: ArcView shapefile Part_Name: HYDRO.* Part_Description: Shapefiles for major water bodies Data_Set_Part: Part_Type: Spatial Data Transfer Standard (SDTS) data exchange files Part_Name: Geologic map data Part_Description: These SDTS files provide the scientific content of the mapped data Data_Set_Part: Part_Type: SDTS files Part_Name: BEDR*.* Part_Description: SDTS files for the contacts of bedrock geologic map units Data_Set_Part: Part_Type: SDTS files Part_Name: FAUL*.* Part_Description: SDTS files for the geologic faults and folds Data_Set_Part: Part_Type: SDTS files Part_Name: NEAT*.* Part_Description: SDTS files for the map neatline Data_Set_Part: Part_Type: SDTS files Part_Name: SINK*.* Part_Description: SDTS files for sinkhole locations Data_Set_Part: Part_Type: SDTS files Part_Name: STRU*.* Part_Description: SDTS files for the geologic structure Data_Set_Part: Part_Type: SDTS files Part_Name: SURF*.* Part_Description: SDTS files for the contacts of surficial geologic map units Data_Set_Part: Part_Type: Spatial Data Transfer Standard (SDTS) data exchange files Part_Name: Base map data Part_Description: These SDTS files provide the base map to which the geologic information is geographically registered Data_Set_Part: Part_Type: SDTS files Part_Name: POLB*.* Part_Description: SDTS files for state and county boundaries Data_Set_Part: Part_Type: SDTS files Part_Name: ROAD*.* Part_Description: SDTS files for major highways Data_Set_Part: Part_Type: SDTS files Part_Name: TOPO*.* Part_Description: SDTS files for elevation contours Data_Set_Part: Part_Type: SDTS files Part_Name: HYDR*.* Part_Description: SDTS files for major water bodies Data_Set_Part: Part_Type: Microsoft Access databases and their ASCII text file equivalents (files in the 'text_tables' folder with *.txt extensions) Part_Name: Geologic database Part_Description: These databases contain attribute information that can be used as supplements to the GIS layers Data_Set_Part: Part_Type: Microsoft Access database Part_Name: DCDB_EESP.MDB Part_Description: Database designed by the Eastern Region's Earth Surface Processes Team (EESPT) of the U.S. Geological Survey Data_Set_Part: Part_Type: Microsoft Access database Part_Name: DCDB_DM.MDB Part_Description: Database resulting from the conversion of the DCDB_EESP.MDB database to a format compatible with the North American Data Model Standard for Geologic Map Data Version 4.3 (NADM) of Johnson et al. (1988) Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1988 Ending_Date: 2001 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -78.00 East_Bounding_Coordinate: -77.00 North_Bounding_Coordinate: 39.50 South_Bounding_Coordinate: 38.00 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geologic maps Theme_Keyword: bedrock geologic units Theme_Keyword: surficial geologic units Theme_Keyword: faulting (geologic) Theme_Keyword: geologic structure Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: none Place_Keyword: Frederick Place_Keyword: Maryland Place_Keyword: Washington Place_Keyword: DC Place_Keyword: Fredericksburg Place_Keyword: Virginia Place_Keyword: West Virginia Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: US11 = District of Columbia Place_Keyword: f24013 = Carroll Place_Keyword: f24021 = Frederick Place_Keyword: f24027 = Howard Place_Keyword: f24031 = Montgomery Place_Keyword: f24043 = Washington Place_Keyword: f51043 = Clarke Place_Keyword: f51059 = Fairfax Place_Keyword: f51061 = Fauquier Place_Keyword: f51107 = Loudoun Place_Keyword: f54003 = Berkeley Place_Keyword: f54037 = Jefferson Place_Keyword: f24017 = Charles Place_Keyword: f24033 = Prince George's Place_Keyword: f51013 = Arlington Place_Keyword: f51047 = Culpeper Place_Keyword: f51153 = Prince William Place_Keyword: f51157 = Rappahannock Place_Keyword: f51179 = Stafford Place_Keyword: f51033 = Caroline Place_Keyword: f51057 = Essex Place_Keyword: f51085 = Hanover Place_Keyword: f51099 = King George Place_Keyword: f51109 = Louisa Place_Keyword: f51137 = Orange Place_Keyword: f51177 = Spotsylvania Place_Keyword: f51193 = Westmoreland 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: C. Scott Southworth 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: 703-648-6385 Contact_Facsimile_Telephone: 703-648-6953 Contact_Electronic_Mail_Address: ssouthwo@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2001/of01-227/01227p1p.gif Browse_Graphic_File_Description: Reduced-size image showing the general layout of map sheet. 640x864 pixels, 24-bit color. Browse_Graphic_File_Type: GIF Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2001/of01-227/01227p2p.gif Browse_Graphic_File_Description: Reduced-size image showing the general layout of map sheet. 640x864 pixels, 24-bit color. Browse_Graphic_File_Type: GIF Data_Quality_Information: Logical_Consistency_Report: Polygon and chain-node topology present Completeness_Report: DCDB Version 1.0 - subsequent versions may contain more data and/or a greater diversity of data types. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Mixon, R.B. Originator: Pavlides, Louis Originator: Powars, D.S. Originator: Froelich, A.J. Originator: Weems, R.E. Originator: Schindler, J.S. Originator: Newell, W.L. Originator: Edwards, L.E. Originator: Ward, L.W. Title: Geologic map of the Fredericksburg 30' X 60' quadrangle, Virginia and Maryland Publication_Date: 2000 Series_Information: Series_Name: U.S. Geological Survey, Geologic Investigations Series Map Issue_Identification: I-2607 Other_Citation_Details: Source_Scale_Denominator: 100000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Mixon and others (2000) Source_Contribution: These geologic data were compiled at the scale 1:100,000 from a series of detailed published and unpublished field investigations at scales ranging from 1:24000 to 1:100000. Source_Information: Source_Citation: Citation_Information: Originator: Lyttle, P.T. Originator: Aleinikoff, J.N. Originator: Drake, A.A., Jr. Originator: Froelich, A.J. Originator: Horton, J.W., Jr. Originator: Kasselas, G. Originator: McCartan, L. Originator: Mixon, R.B. Originator: Nelson, A.E. Originator: Pavlides, L. Originator: Weems, R.E. Title: Geologic Map of the Washington West 30' X 60' Quadrangle, District of Columbia, Virginia, Maryland Publication_Date: in press Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Map Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: in press Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Lyttle and others (in press) Source_Contribution: These geologic data were compiled at the scale 1:100,000 from a series of detailed published and unpublished field investigations at scales ranging from 1:24000 to 1:100000. Source_Information: Source_Citation: Citation_Information: Originator: Southworth, S. Originator: Brezinski, D.K. Originator: Drake, A.A.,Jr. Originator: Burton, W.C. Originator: Orndorff, R.C. Originator: Froelich, A.J. Originator: Reddy, J. Originator: Daniels, D.L. Title: Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland and Virginia Publication_Date: in press Series_Information: Series_Name: U.S. Geological Survey Geologic Investigations Series Map Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: in press Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Southworth and others (in press) Source_Contribution: These geologic data were compiled at the scale 1:100,000 from a series of detailed published and unpublished field investigations at scales ranging from 1:24000 to 1:100000. Process_Step: Process_Description: The geologic map data was digitized from mylar scribe sheets used to prepare the published or in press Geologic Maps of the Fredericksburg (Mixon and others, 2000), Washington West (Lyttle and others, in press), and Frederick (Southworth and others, in press) 30 X 60 Minute Quadrangles at a map scale of 1:100,000. Mylar scribe sheets were scannned, vectorized and then imported into Arc/Info software. Frederick and Washington West were digitized by the Eastern Earth Surface Processes Team of the U.S. Geological Survey. Fredericksburg was digitized by Geologic Data Systems, Inc., 1600 Emerson Street, Denver, CO 80218 Process_Date: 1999 Process_Step: Process_Description: Polygons, lines, and points for each of the three 30 X 60 minute quadrangles were combined into a single polygon coverage (i.e., bedrock and surficial map units), a single line coverage (i.e., faults and fold axes) and two point coverages (sinkholes and structural measurements). This process involved edgematching of linework and making the map unit symbols uniform across quadrangle boundaries. Process_Date: 19991221 Process_Step: Process_Description: Surficial geology polygons were separated from the bedrock map units into a surficial polygon coverage. The result is two map unit coverages: one that contains bedrock geology units and one that contains surficial geology units. Process_Date: 20001031 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: 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: >BEDROCK - Polygon data layer of bedrock geologic map units > BEDROCK.PAT items: > MAPUNIT - Bedrock geologic map unit code > COA_ID - Compound object archive identifier, map unit names and descriptions - > a data linkage hub in North American Data Model (NADM) 4.3 > >FAULT - Line data layer of geologic faults and folds > FAULT.AAT items: > SYMBOL - Symbol number from FAULT.LIN or ALCNEW61.LIN linesets, used for plotting > SYMBOL-ARC - Symbol number from GDS1.LIN lineset, used for plotting > FEATURE - Geologic Data Systems (GDS) assigned feature description > ELEVATION - GDS assigned attribute > TYPE - Type of fault > TYPE Code Description > AC Anticline > AF Antiform > ARO Arrow showing movement along strike-slip fault > FZ Fault zone > N Normal fault > NT Normal fault re-activated as thrust fault > OT Overturned thrust fault > SC Syncline > SF Synform > SS Strike-slip fault > T Thrust fault > TA Thermal aureole > UF Unclassified fault > ULF Unclassified linear feature > CODE - Identifies fault segments which are overlaid by surficial deposits > (CODE = 2). Used for plotting. Relevant only for those faults which > lie within the boundary of the USGS Frederick 1:100000-scale map. > QUAD - Identifies the USGS 1:100000-scale map to which the feature belongs > QUAD > Code Description > FB - Fredericksburg > FK - Frederick > WW - Washington West > >NEAT - Line data layer of map neatline > >SINK - Point data layer of sinkhole locations > SINK.PAT items: > MAPUNIT - Set to 'Sinkhole' > >STRUCTURE - Point data layer of geologic structure > STRUCTURE.PAT items: > DIP - Dip value (planar data) or plunge value (linear data) > STRIKE_ANG - GDS assigned angle measured from North > AZIMUTH - Angle measured from North in right-hand rule (planar data). > Routines used to digitize the geologic structure symbols that > lie within the boundaries of the USGS Frederick and Washington > West 1:100000-scale maps (item QUAD equal to 'FK' and 'WW', > respectively) resulted in the azimuth value for those symbols to > be calculated based on a northern trend (270<=azimuth<=90). > Southern trending azimuth values (90 symbols associated with the Frederick and Washington West maps > were translated to their northern trend equivalents. If necessary, > the southern trending azimuth values for these symbols can be > restored using the item SYMB_ANG and the following equations: > For 180 azimuth = AZIMUTH + 180 > For 270 azimuth = AZIMUTH - 180 > TYPE - Type of geologic structure. Relevant for geologic structure data > that lies within the boundaries of the USGS Frederick and Washington West > 1:100000-scale maps (item QUAD equal to 'FK' and 'WW') > TYPE Code Description > AGE Sample site for U-Pb isotopic technique for age date > HB Horizontal bed > I1C Inclined first-generation Paleozoic cleavage and (or) schistosity > I2C Inclined second-generation Paleozoic cleavage and (or) schistosity > IEF Inclined early foliation > IB Inclined bed > IF Inclined Middle Proterozoic foliation > IMP Inclined mylonitic and phyllonitic foliations > IPF Inclined phyllonitic foliation > MA Minor antiform > OB Overturned bed > QM Quarry or mine > RAD Greater than 200 pCi/L of soil gas radon > V1C Vertical first-generation Paleozoic cleavage and (or) schistosity > V2C Vertical second-generation Paleozoic cleavage and (or) schistosity > VB Vertical bed > VEF Vertical early foliation > VF Vertical Middle Proterozoic foliation > VMP Vertical mylonitic and phyllonitic foliations > SUB_TYPE - Type of quarry mine > SUB_TYPE > Code Description > Ag Silver > Au Gold > C Chromite > Cu Copper > D Diabase > F Hematite, limonite, and iron-ore > L Limestone > M Marble > Mg Magnetite > Mn Manganese > Pb Lead > S Building stone > Sl Slate > Zn Zinc > SYMB_ANG - Standard Cartesian angle measured from East. Used for plotting. > DIPDIR - Direction of dip (planar data) or trend (linear data) measured from North > SYMBOL - Symbol number from the LOUDOUN_AP.MRK markerset or the MPLY.LIN lineset, > used for plotting > FEATURE - Type of geologic structure. Relevant for geologic structure data that > lies within the boundary of the USGS Fredericksburg 1:100000-scale > map (item QUAD equal to 'FB') > GROUP - GDS assigned attribute > METHOD - GDS assigned attribute > SOURCE - GDS assigned attribute > DIP_DIR - GDS assigned attribute > SYMB_ARC - Symbol number from the GDS1.MRK markerset, used for plotting > QUAD - Identifies the USGS 1:100000-scale map to which the structure data belongs > QUAD > Code Description > FB - Fredericksburg > FK - Frederick > WW - Washington West > >SURFICIAL - - Polygon data layer of surficial geologic map units > SURFICIAL.PAT items: > MAPUNIT - Surficial geologic map unit code > COA_ID - Compound object archive identifier, map unit names and descriptions - > a data linkage hub in North American Data Model (NADM) 4.3 > >BASE DATA: >POLBND - Net data layer of state and county boundaries: > POLBND.AAT items: > POLBND-ID > TYPE - State or county boundary > POLBND.PAT items: > STATE_NAME - State in which county resides > CNTY_NAME - County name > STATE_FIPS - State FIPS code (character field) > CNTY_FIPS - County FIPS code (character field) > FIPS - FIPS code for state/county (character field) > MAJOR# - DLG code > MINOR# - DLG code > Major DLG Minor DLG > Code Code Description > 91 --- State FIPS code (integer field) > 92 --- County FIPS code (integer field) > >ROADS - Line data layer of major highways > ROADS.AAT items: > MAJOR# - DLG code > MINOR# - DLG code > Major DLG Minor DLG > Code Code Description > 170 201 Primary route, class 1, undivided > 170 203 Primary route, class 1, divided > 170 204 Primary route, class 1, one way > 170 205 Secondary route, class 2, undivided > 170 207 Secondary route, class 2, divided > 170 209 Road or street, class 3 > 170 210 Road or street, class 4 > 170 401 Traffic circle > 170 402 Cloverleaf or interchange > 170 607 Underpassing > 170 617 Business route > 172 --- Interstate route number > 173 --- U.S. route number > 174 --- State route number > >TOPO - Line data layer of elevation contours > TOPO.AAT items: > MAJOR# - DLG code > MINOR# - DLG code > Major DLG Minor DLG > Code Code Description > 20 20O Contour (index or intermediate) > 20 201 Carrying contour > 20 204 Amended contour > 20 208 Closure line > 20 611 Depression > 24 --- Elevation in whole meters > TYPE - Type of contour: index (Index) or intermediate (Inter), > used for plotting > >HYDRO - Polygon data layer of major water bodies > HYDRO.PAT items: > RINGS_OK - Attribute assigned by the Chesapeake Bay Program > RINGS_NOK - Attribute assigned by the Chesapeake Bay Program > FEATURE - Type of hydrologic feature (stream, pond, marsh, etc.) Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/of/2001/of01-227/of01227.pdf Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: C. Scott Southworth Contact_Address: Address_Type: Mailing address Address: National Center, MS926A City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6385 Contact_Facsimile_Telephone: 703-648-6953 Contact_Electronic_Mail_Address: ssouthwo@usgs.gov Hours_of_Service: Monday - Friday 9:00 - 5:00 EST Resource_Description: USGS Open-File Report 01-227 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: ARCE Format_Version_Number: 8.0.2 Format_Information_Content: Bedrock and surficial geologic map units, fault and fold axes, structural geology, political boundaries, elevation contours, and major highways and water bodies. File_Decompression_Technique: WinZip, gzip and tar Transfer_Size: 37.0 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2001/of01-227/of01227.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20160613 Metadata_Review_Date: 20020505 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