| Résumé: | Data from an analysis of deep-sea cores from beneath the California Current indicate that five faunal changes occur at or slightly above the lithologic Pleistocene-Holocene boundary off San Francisco and Los Angeles, California, but generally below this boundary near Cedros Island, Baja California. The mean temperature increase at the end of the Pleistocene, based upon the present relationship between sea-surface temperature ranges and their modern planktonic foraminiferal indices, was 5°C near Cedros Island, 9°C off Los Angeles, and 5°C off San Francisco. A period of seasonal warming during the early Wisconsin has been identified off Los Angeles. Warming is indicated by all faunal criteria except the radiolarian number and the coiling direction of Globorotalia (Turborotalia) pachyderma which appear to characterize the southward flowing California Current, whereas the other criteria are more strongly influenced by the northward flowing Davidson Current.
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