Radiolarians from the Northwest Pacific, Deep Sea Drilling Project Leg 86

Abstract

Radiolarians occur in sediments from all northwest Pacific sites drilled on DSDP Leg 86. The oldest radiolarian-bearing sediment was recovered at Site 581, where middle Miocene radiolarians were found. Site 578 recovered late Mio-cene through Pleistocene radiolarians, while an early Pliocene through Pleistocene radiolarian assemblage was present in sediments at Sites 577 and 579. Site 580 contained radiolarians ranging in age from late Pliocene to Pleistocene. Only Pleistocene radiolarians were preserved in sediments from Site 576.