Late Miocene to Recent planktonic foraminifers from the North Atlantic: Deep Sea Drilling Project Leg 94.

Abstract

The main objective of DSDP Leg 94 was to study North Atlantic late Neogene environments. The 6 drill sites underlie a range of present-day environments from subtropical to subpolar, and all except one are characterized by high sedimentation rates and minimal reworking. A good record back to at least 2.5Ma has been obtained. At Sites 606 and 607, the subtropical stratigraphic zonation of Berggren (1973) can be applied. At Site 608 some of the species employed in this zonation are rare or absent, and at Sites 609, 610, and 611 the zonation is inadequate. Previous high-latitude zonations have suffered from poor core recovery and a lack of paleomagnetic control, so that stratigraphic ranges were not always accurately quoted. An informal high-latitude stratigraphy which may be of more value is outlined.-from Author