Contribution à l'étude du nannoplâncton du Leg 12, "sites" 118-119 (Ocean Atlantique)

Abstract

Key-words: Chronostratigraphy - Micropaleontology - Biscaye Golf - Miocene - Coccolithophorids - Calcareous nannoplankton This paper reports a Scanning Electron Microscopy study of sorne samples from the leg 12, Deep Sea Drilling Project, sites 118 and 119. The chronostratigraphic distribution, the frequency of the species identified and the datation of the samples studied are presented. In accordance with the calcareous nannofossil zonation proposed by E. MARTINI (1971) the samples from site Ils are ascribed to the Upper Miocene while the samples from site 119 are located between the Lower (NN1) and the Upper Miocene (NNIO).