Figure 2. Adopted time framework and middle Miocene-Pleistocene calcareous nannofossil events and zonations proposed for the California margin compared with standard zonation of Okada and Bukry (1980) and Bukry (1991) and Mediterranean zonations (Rio, Raffi, et al., 1990; Fornaciari et al., 1996). At left: geomagnetic polarity time scale (GPTS) after Cande and Kent (1995). CN = Neogene coccolith, MNN = Mediterranean Neogene Nannoplankton. * = emended zones and subzones. FO = first occurrence, LO = last occurrence, FCO = first common and continuous occurrence, LCO = last common and continuous occurrence. AB = acme beginning, PB = paracme beginning, PE = paracme end.

Figure 2. Adopted time framework and middle Miocene-Pleistocene calcareous nannofossil events and zonations proposed for the California margin compared with standard zonation of Okada and Bukry (1980) and Bukry (1991) and Mediterranean zonations (Rio, Raffi, et al., 1990; Fornaciari et al., 1996). At left: geomagnetic polarity time scale (GPTS) after Cande and Kent (1995). CN = Neogene coccolith, MNN = Mediterranean Neogene Nannoplankton. * = emended zones and subzones. FO = first occurrence, LO = last occurrence, FCO = first common and continuous occurrence, LCO = last common and continuous occurrence. AB = acme beginning, PB = paracme beginning, PE = paracme end.