To the sea in fragments

Abstract

Abundant evidence prevails along the western border of California that the relation of land to sea has undergone many changes in past geologic time. The ceaseless onslaught of the continental margin by the Pacific Ocean, accompanied by a restlessness on the part of the land, has been largely instrumental in bringing about extensive invasions of the sea during the long periods of the geologic past. Commonplace though the evidence may be to the geologist, the facts that point to the former presence of the sea where now exists only dry land are sometimes startling in their revelation to the layman.

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