You searched for: Author Beikman, Helen M. Remove constraint Author: Beikman, Helen M. Publisher Geological Survey (U.S.) Remove constraint Publisher: Geological Survey (U.S.) Subject Impact craters Remove constraint Subject: Impact craters Place New Jersey Remove constraint Place: New Jersey Data type Line Remove constraint Data type: Line
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.).