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Book Chapter

Evolution of the offshore central California margin

By
David S. McCulloch
David S. McCulloch
U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025
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Published:
January 01, 1989

Abstract

The geology of offshore central California records a history of accretion and subduction modified by the presently active transform motion between the Pacific and North American Plates. Understanding the older accretionary history lies in establishing the identity and boundaries of basement blocks or terrains. The younger history is recorded in the stratigraphy and deformation of the late Tertiary basins that lie on the continental shelf and slope. The geologic history is complicated by overprinting of old structures during younger tectonic events and by slivering and redistribution during transform motion. The major tectonic events appear to be related both in their timing and sense (transtension and transpression) to changes in relative motion between the Pacific and North American Plates as inferred from changes in the hot-spot trends.

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Contents

DNAG, Geology of North America

The Eastern Pacific Ocean and Hawaii

E. L. Winterer
E. L. Winterer
Scripps Institution of Oceanography La Jolla, California 92093
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Donald M. Hussong
Donald M. Hussong
University of Hawaii Department of Geology and Geophysics Honolulu, Hawaii 96822
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Robert W. Decker
Robert W. Decker
4087 Silver Bar Road Mariposa, California 95338
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Geological Society of America
Volume
N
ISBN electronic:
9780813754659
Publication date:
January 01, 1989

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