[SCG64-08] The Renaissance of the oldest oceanic plate: Perspective of REY-rich mud as a paleoceanographic archive in a pelagic realm of the Pacific Ocean
Keywords:REY-rich mud, Minamitorishima Island, paleoenvironmental change, pelagic clay
However, the piston cores do not cover all the sedimentary history of REY-rich mud because of the short length (~12 m each) . Meanwhile, previous DSDP and ODP cores drilled in the Minamitorishima area (e.g. DSDP Site 198, ODP Sites 800 and 801) captured no sedimentary layer comparable to the extremely REY-rich mud, which is most likely due to poor recovery of the sediment column [9,10].
Here we propose a new scientific drilling of pelagic clay in the western North Pacific Ocean. The purpose of the drilling is (1) to obtain the complete sedimentary sequence of pelagic clay from the late Cretaceous to the present day, (2) to complete the ichthyolith- and REY-enrichment layers lying in the area and (3) to elucidate environmental and ecological factors that related to the formation of REY-rich mud.
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