Abstract

Th230/U234 dating of corals shows that the Nestor Terrace in the San Diego area was formed 120,000 ± 10,000 yr ago. This terrace appears to be correlative with marine terraces at other places on the California coast and with shoreline features formed in many parts of the world during a late Pleistocene eustatic high sea stand. The difference between the original and present elevations of the Nestor Terrace on the west side of Point Loma in San Diego indicates an average rate of uplift, since the terrace formed, of 11 to 14 cm per 1,000 yr. Dating of mollusks from the Nestor Terrace and from a topographically lower terrace has given apparently unreliable results.

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