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From the site: "Karst regions derived from 1968 geological map of West Virginia. In 1968 the West Virginia Geological and Economic Survey (WVGES) published a State Geologic...
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Links to Delaware geologic map datasets and water-table datasets; includes GIS-readable formats.
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Map layers associated with the Marcellus Shale in the interactive mapping system include various Onondaga map layers. This is confusing to many users--i.e., why don't we use...
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From the site: "Geologic map of the Higginsport quadrangle, Ohio-Kentucky and part of the Russellville quadrangle, Mason County, Kentucky"
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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From the site: "Major geologic units in the West Virginia region including metamorphic provinces, major faults, calderas, impact structures, and the limits of continental...
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From the National Geologic Map Database site: "Geology of the Whitley City quadrangle, Kentucky and the Kentucky part of the Winfield quadrangle"
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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A Digital Raster Graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. An unclipped scanned image includes all marginal information, while a...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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Map layers associated with the Marcellus Shale in the interactive mapping system include various Onondaga map layers. This is confusing to many users--i.e., why don't we use...
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From the site: “The Geologic Atlas of the United States is a set of 227 folios published by the U.S. Geological Survey between 1894 and 1945. Each folio includes both...
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In 2001, the Bureau of Topographic and Geologic Survey (the Bureau) released the Digital Bedrock Geology of Pennsylvania. This dataset was based on Map 1, Geologic Map of...
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From the site: "This raster dataset has been created using the "Floodplains from the PA Explorer CD-ROM edition" for each county in the study area as originated by the Office of...
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From the site: "Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production, and...
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