Calcareous nannofossil biostratigraphy, Leg 64.

Abstract

To investigate the sedimentology and the spreading history of the Gulf of California, holes were drilled in two different areas of the Gulf. In most holes, calcareous nannofossils could be used to establish stratigraphy. Stratigraphic, paleoceanographic and sedimentological results from sites in two areas of the Gulf are described; 1) a transect from oceanic to continental basement off the S tip of Baja California (sites 474-476); and 2) in the Guaymas Basin (sites 477-481). Pleistocene and Pliocene sequences are described.-Author