Quaternary radiolarian biostratigraphy in the subarctic northeastern Pacific (IODP Expedition 341 Site U1417) and synchroneity of bioevents across the North Pacific
Geological Survey of Japan, AIST, Marine Geology Research Group/Institute of Geology and Geoinformation, Tsukuba Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
Department of Earth and Planetary Science, Graduate School of Science, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Noritoshi Suzuki
Department of Earth Science, Graduate School of Science, Tohoku University, Aramaki Aza Aoba 6-3, Aoba-ku, Sendai 980-8578, Japan
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The Integrated Ocean Drilling Program Expedition 341 retrieved deep-sea sediment (e.g., U1417) for determining the linkage between climate and tectonism change in the Neogene at several sites. It is crucial to constrain the age of the collected sediments. In this context we define the biostratigraphy of radiolarians, which are a good proxy for constraining the age of deep-sea sediments. We defined the upper 200 m of the core sediments collected at Site U1417 as covering the past 1.7 Mky.
The Integrated Ocean Drilling Program Expedition 341 retrieved deep-sea sediment (e.g., U1417)...