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Data report: Pleistocene radiolarian biostratigraphy, IODP Expedition 346 Site U1427

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Proceedings of the IODP

Integrated Ocean Drilling Program

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      Abstract

      Quantitative analysis of radiolarian assemblages was conducted on sediment cores collected from the seafloor during Integrated Ocean Drilling Program Expedition 346. During Expedition 346, Site U1427 was cored in the shelf region of the Yamato Basin, southern Japan Sea, to 570 m core composite depth below seafloor (CCSF-A) in Hole U1427A. Radiolarian biostratigraphy conducted for this site identified four datum levels: last occurrence (LO) of Lychnocanomma sakaii (0.054 Ma), LO of Amphimelissa setosa (0.085 Ma), LO of Schizodiscus japonicus (0.29 Ma), and first occurrence (FO) of Amphimelissa setosa (~1.48 Ma). In addition, the abundance maxima of subtropical water species, which indicate migration of the Tsushima Warm Current from the East China Sea associated with eustatic sea level rise during interglacial periods, are most likely correlated with the marine isotope stages during the past 1.5 My.

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      A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records

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          Late Quaternary paleoceanographic changes in the Bering Sea and the western subarctic Pacific based on radiolarian assemblages

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            Author and article information

            Journal
            10.2204/iodp.proc.346.2015
            Proceedings of the IODP
            Integrated Ocean Drilling Program
            1930-1014
            02 May 2018
            10.2204/iodp.proc.346.202.2018

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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            Self URI (journal page): http://publications.iodp.org/

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