Coccoliths recovered at 69 localities from the northwest coast of San Miguel Island provide definitive biostratigraphic criteria for subdivision of more than 1,425 m of submarine fan strata of the Mirounga formation of Late Cretaceous age. The seven coccolith zones recognized from the stratigraphic distribution of 38 species suggest that San Miguel Island has one of the most complete sequences of Upper Cretaceous strata in southern California. The zones are, from oldest to youngest: Quadrum gartneri, Eiffellithus eximius, Marthasterites furcatus, Micula staurophora, Broinsonia parca, Quadrum trifidum, and Arkhangelskiella cymbiformis zones. These coccolith zones are known elsewhere in the world....

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.