Glacial-interglacial variations in sediment organic carbon accumulation and benthic foraminiferal assemblages on the Bermuda Rise (ODP Site 1063) during MIS 13 to 10
作者： Maria Serena Poli , Philip A. Meyers , Robert C. Thunell , Marco Capodivacca
DOI: 10.1029/2012PA002314
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摘要: glacial times. Organic d 13 C values are less negative during MIS 12 and 10 than 11, which is consistent with greater glacial-stage marine productivity. High relative abundances of Oridorsalis umbonatus intervals probably records a low but sustained flux highly degraded organic material. Large, recurrent fluctuations in the abundance Epistominella exigua at beginnings glaciations suggest marked increase local phytoplankton blooms these times consequent delivery phytodetritus to seafloor. The most likely causes variations changes position strength Gulf Stream its associated cold-ring eddies, combined increased advection terrigenous sediments from northerly locations lowstands.
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