You searched for: Author Beikman, Helen M. Remove constraint Author: Beikman, Helen M. Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Place Arizona Remove constraint Place: Arizona Format Shapefile Remove constraint Format: Shapefile Year 1994 Remove constraint Year: 1994
1994. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile represents the major fault lines in the United States. A fault is a fracture or fracture zone in the Earth's crust along which ... Geological Survey (U.S.).
1994. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This polygon shapefile shows the boundaries of geologic units within the United States. This layer is part of the Geologic Map of the United States... Geological Survey (U.S.).