You searched for: Publisher Geological Survey (U.S.) Remove constraint Publisher: Geological Survey (U.S.) Place United States Remove constraint Place: United States Place Arkansas Remove constraint Place: Arkansas Place Delaware Remove constraint Place: Delaware Data type Line Remove constraint Data type: Line Format Shapefile Remove constraint Format: Shapefile
11. Outlines of Major Calderas and Impact Structures: Generalized Geologic Map of the Conterminous United States, 2005
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. A caldera is a large, generally circular depre... Geological Survey (U.S.).
2005. Geological Survey (U.S.). This line shapefile represents railroads in the conterminous United States and Alaska at 1:2,000,000. This is a replacement for the December 1998 m... Geological Survey (U.S.).