You searched for: Author Schruben, Paul G. Remove constraint Author: Schruben, Paul G. Publisher Geological Survey (U.S.) Remove constraint Publisher: Geological Survey (U.S.) Access Public Remove constraint Access: Public Subject Impact craters Remove constraint Subject: Impact craters Subject Calderas Remove constraint Subject: Calderas Place New Jersey Remove constraint Place: New Jersey Place Maine Remove constraint Place: Maine Place Colorado Remove constraint Place: Colorado
1. 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.).