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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Loudoun Geologic Bedrocks

    Metadata Updated: September 6, 2024

    More Metadata"Bedrock" is one of four layers which collectively describe the subsurface geologic formation, structural geology and surficial deposits. "Bedrock" is the subsurface expression of the geologic formations near the ground surface as mapped by outcrops and well borings. The geology of Loudoun County, Virginia, was mapped in 1988 through 1991 under a cooperative agreement between the U.S. Geological Survey (USGS) and the Loudoun County Department of Environmental Resources. This geologic map was compiled in 1993 from a series of detailed published and unpublished field investigations at scales of 1:12,000 and 1:24,000. Some of these same data were compiled as a digital geologic map at 1:100,000 scale (Burton and others, 1992a) and were the basis for a cost-benefit analysis of the societal value of geologic maps (Bernknopf and others, 1993). The data was later revised and published by USGS in the Open File Report, MAP OF-99-150, GEOLOGIC MAP OF LOUDOUN COUNTY, VIRGINIA By Scott Southworth, W.C. Burton, J.S. Schindler, and A.J. Froelich1 with contributions on the geology of the Piedmont province by A.A. Drake, Jr., and R.E. Weems and an aeromagnetic survey by D.L. Daniels, W.F. Hanna, and R.E. Bracken.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date September 2, 2022
    Metadata Updated Date September 6, 2024

    Metadata Source

    Harvested from Loudoun County Virginia Data Source

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 2, 2022
    Metadata Updated Date September 6, 2024
    Publisher Loudoun County GIS
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=f408de53c81044cea67d181a6dbde7e9&sublayer=4
    Data First Published 2017-09-11T14:04:33.000Z
    Data Last Modified 2020-11-24T15:36:55.000Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 62d228af-2ff1-4f3c-9bc3-83e3104bdc8e
    Harvest Source Id bc39e510-cff7-4263-8d5b-7c800dd08cd6
    Harvest Source Title Loudoun County Virginia Data Source
    Homepage URL https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-geologic-bedrocks
    License https://logis.loudoun.gov/loudoun/disclaimer.html
    Metadata Type geospatial
    Old Spatial -77.9634,38.8489,-77.3240,39.3216
    Source Datajson Identifier True
    Source Hash 318c7996234252804c6d35fcbe9a62e372d21d1ee47bfc3e92b08c436d44680c
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.9634, 38.8489, -77.9634, 39.3216, -77.3240, 39.3216, -77.3240, 38.8489, -77.9634, 38.8489}

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