2026-05-08T11:46:54Z

Outlines of Major Calderas and Impact Structures: Generalized Geologic Map of the Conterminous United States, 2005

Gbl Index Year Im:

2005

Dct Creator Sm:

King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M.

Dct Description Sm:

This line shapefile shows the outlines of major calderas and impact structures in the United States. A caldera is a large, generally circular depre...

Dct Publisher Sm:

Geological Survey (U.S.) and National Atlas of the United States