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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 46 (1962)

Issue: 2. (February)

First Page: 265

Last Page: 265

Title: Exploring the Continental Crust of Western United States: ABSTRACT

Author(s): J. P. Eaton, L. C. Pakiser, W. H. Jackson, S. W. Stewart, D. J. Stuart

Article Type: Meeting abstract

Abstract:

Seismic-refraction measurements have been made by the U. S. Geological Survey along 10 profiles, each 300 km. long or more, in California and adjacent Nevada, and Colorado and adjacent New Mexico, as a part of the Vela Uniform program of the Advanced Research Projects Agency, Department of Defense. Initial interpretation of results along a line from Fallon to Eureka, Nevada, defines an intermediate crustal layer at a depth of about 22 km. with a velocity of 7.2 km. per sec., and the Mohorovicic discontinuity at a depth of about 40 km., below which the velocity is 8.0 km. per sec. Interpretation of the first profile completed in Colorado defines an intermediate crustal layer at a depth of about 31 km. with a velocity of 6.9 km. per sec., and the Mohorovicic discontinuity a a depth of about 48 km., below which the velocity is 8.0 km. per sec. The velocity in the upper crustal layer, below the near-surface rocks, is 6.1 km. per sec. along both profiles.

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Copyright 1997 American Association of Petroleum Geologists