Loudoun Geologic Bedrocks

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 This geologic map was compiled in 1993 from a series of detailed published and unpublished field investigations at scales of 1:12,000 and 1:24,000.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.

Data and Resources

Field	Value
accessLevel	public
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier	https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-geologic-bedrocks
issued	2017-09-11T14:04:33.000Z
landingPage	https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-geologic-bedrocks
license	https://logis.loudoun.gov/loudoun/disclaimer.html
metadata_type	geospatial
modified	2020-11-24T15:36:55.000Z
old-spatial	-77.9634,38.8489,-77.3240,39.3216
publisher	Loudoun GIS
resource-type	Dataset
source_datajson_identifier	true
source_hash	20016abef62e54573b8577396eb2ad0cd9542097
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]]]}
theme	{geospatial}
Groups	AmeriGEOSS National Provider North America
Tags	amerigeo amerigeoss ckan environment environmental geo geologic-bedrocks geoss loudoun-county national north-america open-data united-states
isopen	False
license_id	other-license-specified
license_title	other-license-specified
maintainer	LoudounCounty
maintainer_email	mapping@loudoun.gov
metadata_created	2025-11-21T01:22:42.878991
metadata_modified	2025-11-21T01:22:42.878995
notes	<div><a href='https://logis.loudoun.gov/metadata/Geologic%20bedrock.htm' target='_blank'>More Metadata</a><br /></div>"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.
num_resources	6
num_tags	13
title	Loudoun Geologic Bedrocks