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You searched for: Author Beikman, Helen M. Remove constraint Author: Beikman, Helen M. Place South Dakota Remove constraint Place: South Dakota Data type Point Remove constraint Data type: Point
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1. Impact Structure Locations: Geology of the Conterminous United States, 2005

2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This point shapefile shows the locations of impact structures in the United States. An impact structure is a crater formed by the impact of a meteo... Geological Survey (U.S.).