Planktonic foraminiferal biostratigraphy, Deep Sea Drilling Project Leg 81.

Abstract

At the southwest margin of the Rockall Plateau, a Tertiary section can be divided into three parts: a lower, neritic, sedimentary-volcanogenic sequence in the upper Paleocene and lower Eocene; thin and discontinuous, deep-water, glauconitic chalks from the late Eocene through the early Miocene; and thicker, more continuous sections in the middle Miocene through Holocene. Thirteen biostratigraphic intervals are described, five from the upper Paleocene through early Miocene, and eight from the middle Miocene through Holocene. Three lineages of planktonic foraminifers are described that have moderately continuous representation in the Rockall Plateau area during the periods of their rapid differentiation.-from Author