You searched for: Author Beikman, Helen M. Remove constraint Author: Beikman, Helen M. Author Bawiec, Walter J. Remove constraint Author: Bawiec, Walter J. Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Place Colorado Remove constraint Place: Colorado Place Georgia Remove constraint Place: Georgia Place Michigan Remove constraint Place: Michigan Data type Polygon Remove constraint Data type: Polygon Format Shapefile Remove constraint Format: Shapefile
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. This layer is part of the Geologic Map of the ... Geological Survey (U.S.).