Radiolarians from the western margin of the Rockall Plateau: Deep Sea Drilling Project Leg 81.

Abstract

Radiolarians occur at all Leg 81 sites in Neogene to Quaternary sediments and at Sites 552 and 553 in Eocene cores. Upper Pliocene through Pleistocene glacial sediments are barren of siliceous fossils, and the lowest part of the upper Miocene is barren of radiolarians at all but Site 555. Their presence at Site 555 is probably due to more rapid burial resulting from lateral influx of current-borne sediment. Radiolarians at each site are recorded in percent abundance for 95 Neogene counting groups and 31 Eocene groups. -Authors