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1:250,000 Geology of Tennessee
From the site: "This data set is a digital representation of the printed 1:250,000 geologic maps from the Tennessee Department of Environment and Conservation, Division of...-
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Karst in the United States: A Digital Map Compilation and Database
From the site: "This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential...-
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USGS NGMDB: Bondurant quadrangle
USGS geologic map of an area covering Fulton County, Kentucky and New Madrid and Mississippi Counties, Missouri.-
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Map of Surficial Deposits and Materials in the Eastern and Central United Sta...
USGS map of surficial deposits across the eastern half of the United States. Various downloadable versions of the map are available.-
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USGS Water Resources: 1:250,000-scale Hydrologic Units of the United States
From the site: "The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of...-
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USGS Water Resources: Principal Aquifers of the 48 Conterminous United States...
From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...-
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Pennsylvania Spatial Data: USGS Geopdfs
From the site: "Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and...-
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USGS Mineral Resources: Indiana geologic map data
From the site: "A GIS database of geologic units and structural features in Indiana, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: Illinois geologic map data
From the site: "A GIS database of geologic units and structural features in Illinois, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: South Carolina geologic map data
From the site: "A GIS database of geologic units and structural features in South Carolina, with lithology, age, data structure, and format written and arranged just like the...-
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USGS Mineral Resources: Delaware geologic map data
From the site: "A GIS database of geologic units and structural features in Delaware, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: West Virginia geologic map data
From the site: "A GIS database of geologic units and structural features in West Virginia, with lithology, age, data structure, and format written and arranged just like the...-
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USGS Mineral Resources: Virginia geologic map data
From the site: "A GIS database of geologic units and structural features in Virginia, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: Kentucky geologic map data
From the site: "A GIS database of geologic units and structural features in Kentucky, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: Alabama geologic map data
From the site: "A GIS database of geologic units and structural features in Alabama, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: Georgia geologic map data
From the site: "A GIS database of geologic units and structural features in Georgia, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: Maryland geologic map data
From the site: "A GIS database of geologic units and structural features in Maryland, with lithology, age, data structure, and format written and arranged just like the other...-
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USGS Mineral Resources: North Carolina geologic map data
From the site: "A GIS database of geologic units and structural features in North Carolina, with lithology, age, data structure, and format written and arranged just like the...-
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USGS Mineral Resources: Ohio geologic map data
From the site: "A GIS database of geologic units and structural features in Ohio, with lithology, age, data structure, and format written and arranged just like the other states."-
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USGS Mineral Resources: New York geologic map data
From the site: "A GIS database of geologic units and structural features in New York, with lithology, age, data structure, and format written and arranged just like the other...-
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