Fault patterns by space remote sensing and the rotation of western Oregon during Cenozoic times

Details Fault patterns by space remote sensing and the rotation of western Oregon during Cenozoic times Fault patterns by space remote sensing and the rotation of western Oregon during Cenozoic times

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..81..425c&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 81, no. 4, Feb. 1987, p. 425-433.

Mathematics

Logic

Geological Faults, Landsat Satellites, Photogeology, Remote Sensing, Structural Properties (Geology), Cascade Range (Ca-Or-Wa), Multispectral Band Scanners, Oregon, Photointerpretation, Tectonics

Scientific paper

MSS-Landsat images (bands 6 and 7) as well as previous studies were used to interpret fault patterns in western Oregon in terms of the rotations detected by paleomagnetism. These fault zones show a great concentration between the Cascade Range and the Idaho Batholite and have several distinct trends. The north-south striking structures are attributed to the Basin and Range province, while the large NW-SE right-lateral fault zones are interpreted as resulting from an extension between the Cascades Arc and the Olympic-Wallowa lineament. The latter was a paleoplate boundary during pre-Eocene times. This extension, beginning during Late Eocene/Oligocene times and continuing through recent times, is accompanied by a migration of the rotation pole from southeast to northwest, and by a clockwise rotation of the Coast Range-Klamath Mountain-Cascde Range block, induced by the subduction of the Farallon plate.

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