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Geology

Ancient Submarine Landscapes . . . by Denny Stevenson


Copyright (C) 2002-2009 Kenneth & Gabrielle Adelman, California Coastal Records Project

A leisurely tour along the beaches of the “California Riviera” in Southern Orange County tells a fascinating story of the earth’s history over the last 15 million years. While earthquakes, floods and landslides can be very frightening to man, they are the inevitable result of natural processes which are continuously at work reshaping t he surface of the earth.

Most of the exposures and landscapes of our present day coastline were created when sedimentary material, originally deposited in a marine setting, was uplifted and eroded over a very great length of time. Where today’s geologists often measure uplift and erosion of the land in hundredths of an inch per year, our coastline demonstrates that these same processes have taken place on a scale of hundreds and even thousands of feet over geological time.

Published by the Pendleton Coast Natural History Association
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