Entry_ID: (required)
Entry_Title: Digital Geologic Map and Database of the Frederick 30 X 60 Minute Quadrangle, Maryland, Virginia, and West Virginia
Group: Data_Set_Citation
  Originator(s): Scott Southworth; David K. Brezinski; Avery Ala Drake, Jr.; William C. Burton; Randall C. Orndorff; Albert J. Froelich; David L. Daniels; James E. Reddy; Danielle Denenny
  Title: Digital Geologic Map and Database of the Frederick 30 X 60 Minute Quadrangle, Maryland, Virginia, and West Virginia
  Publication: Open-File Report
  Publication_Date: 2002
  Publication_Place: Reston, Virginia
  Publisher: U.S. Geological Survey
  Edition: 1.0
  Data_Presentation_Form: Vector digital data and map
  URL: http://pubs.usgs.gov/of/2002/of02-437
End_Group
Keyword: Geology
Keyword: Geologic
Keyword: Bedrock
Keyword: Surficial
Keyword: Fault
Keyword: Structure
Keyword: Dike
Keyword: Lakebed
Keyword: Sinkhole
Keyword: Map
Group: Temporal_Coverage
  Start_date: 1997
  Stop_date: 2002
End_Group
Data_Set_Progress: Complete
Group: Spatial_Coverage
  Southernmost_Latitude: 39.00
  Northernmost_Latitude: 39.50
  Westernmost_Longitude: -78.00
  Easternmost_Longitude: -77.00
End_Group
Location: Frederick
Location: Maryland
Location: Virginia
Location: West Virginia
Group: Data_Resolution
  Latitude_Resolution: 0.001
  Longitude_Resolution: 0.001
End_Group
  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.
Originating_Center: (required)
Group: Data_Center
  Data_Center_Name: U.S. Geological Survey
  Dataset_ID: USGS Open-File Report 02-437
Group: Data_Center_Contact
  Last_name: U.S. Geological Survey
  First_name: N/A
  Email: ssouthwo@usgs.gov
  Phone: 703-648-6385
  Group: Address
    National Center, MS926A
    Reston, Virginia 20192
    USA
  End_Group
End_Group
End_Group
Group: Distribution
  Distribution_Media: online
  Distribution_Format : Arc/Info export-interchange
  Distribution_Size: 99.9 megabytes
  Fees: None
End_Group
Group: Multimedia_Sample
  URL: http://pubs.usgs.gov/of/2002/of02-437/02437p1p.gif
  Format: GIF
  Group: Description
    Reduced-size image showing the general layout of map sheet. 864x640 pixels, 24-bit color.
  End_Group
End_Group
Group: Multimedia_Sample
  URL: http://pubs.usgs.gov/of/2002/of02-437/02437p2p.gif
  Format: GIF
  Group: Description
    Reduced-size image showing the general layout of map sheet. 864x640 pixels, 24-bit color.
  End_Group
End_Group
Group: Reference
End_Group
Group: Summary
  The geologic map and database are intended for application to land use decisions, soil mapping, groundwater availability and quality, aggregate resources, and engineering and environmental studies. For site specific studies, the detailed 1:24,000-scale geologic maps should be consulted.
  
  The geology of the Frederick 30 by 60 minute quadrangle, Maryland, Virginia, and West Virginia, was mapped on 1:24,000-scale base maps from 1989 to 1994. The geologic data were manually compiled at 1:100,000-scale in 1997 and were digitized and converted to Arc/Info GIS coverages from 1998 to 1999.
  
  Geologic data are stored in eleven GIS themes: A-A' and B-B' cross sections, bedrock, dikes, faults, lakebeds, thermally metamorphosed rocks, map neat line, sinkholes, structural, and surficial.  Base data are stored in five GIS themes: hydrology, land cover, political boundaries, roads, and elevation contours.
End_Group
Group: DIF_Author
  Last_name: U.S. Geological Survey
  First_name: N/A
  Email: ssouthwo@usgs.gov
  Phone: 703-648-6385
  Group: Address
    National Center, MS926A
    Reston, Virginia 20192
    USA
  End_Group
End_Group
DIF_Revision_Date: 20030813
Science_Review_Date: