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Author
Beikman, Helen M.
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Author
Arndt, Raymond E.
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Publisher
Geological Survey (U.S.)
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Access
Public
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Subject
Plate tectonics
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Place
Massachusetts
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Place
Colorado
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Place
Delaware
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Format
Shapefile
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Year
1994
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1. Geologic Units (Polygons): Geology of the Conterminous United States, 2005
1994. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This polygon shapefile shows the boundaries of geologic units within the United States. This layer is part of the Geologic Map of the United States... Geological Survey (U.S.).