Rotation of stress and blocks in the Lake Mead, Nevada, Fault System

Details Rotation of stress and blocks in the Lake Mead, Nevada, Fault System Rotation of stress and blocks in the Lake Mead, Nevada, Fault System

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1703r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 16, p. 1703-1706.

Mathematics

Logic

1

Geological Faults, Shear Stress, Stress Distribution, Structural Basins, Tectonics, Coefficient Of Friction, Earth Crust, Nevada

Scientific paper

The combined effects of stress field rotation and material rotation were found in the Lake Mead, Nevada Fault System (LMFS). Fault inversion results imply an apparent 60 deg clockwise (CW) rotation of the stress field since mid-Miocene time. In contrast, structural data from the Great Basin suggest only a 30 deg CW stress field rotation. By incorporating paleomagnetic declination anomalies, it is inferred that slip on faults caused a local 30 deg counterclockwise rotation of blocks and faults in the Lake Mead area, so that the inferred 60 deg CW rotation of the stress field in the LMFS is actually only 30 deg.

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