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Map showing upper Cenozoic rocks and deposits and Quaternary faults, Rio Grande rift, south-central Colorado
Steven M. Colman, James P. McCalpin, Dean A. Ostenaa, Robert M. Kirkham
1985, IMAP 1594
This map shows the faults and faulted rocks and deposits in the tectonically active part of the Rio Grande rift in Colorado, with particular emphasis on faults and deposits of Quaternary age. The Rio Grande rift in Colorado has been the subject of considerable recent geologic investigation. General compilations of...
Seismotectonic map of the Puget Sound region, Washington
H. D. Gower, J. C. Yount, R. S. Crosson
1985, IMAP 1613
The Puget Sound region is a seismically active area with hundreds of earthquakes occurring each year (Crosson, 1974, 1975, Crosson and Millard, 1975, Crosson and Noson, 1978a, 1978b, 1979). Most of the earthquakes are so small that they can be detected only by sensitive seismographs such as those operated by...