(Table 1) Geochemistry of Cocos Plate hemipelagic-pelagic sediments in DSDP Hole 66-487@en
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The sedimentary sequence recovered from Hole 487 documents northeast seafloor spreading on the Cocos Plate. A basal 65-meter unit of upper Miocene-Pliocene brown clay was deposited on the subsiding east flank of the East Pacific Rise. The overlying 105-meter unit of gray hemipelagic silt and mud was deposited when Site 487 drifted within reach of terrigenous sediment derived from the Mexican continental margin. […]
创建时间：
2026-04-08
