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doi:10.2204/iodp.proc.330.201.2014

Summary

Drilling at six sites during Expedition 330 recovered sediments from the Upper Cretaceous (upper Maastrichtian) to Pleistocene. Pelagic sediment was recovered at four of the six sites, although calcareous nannofossils are present at all sites. Sediments recovered at Site U1372 are Pliocene to Pleistocene in age. At Site U1373, a small amount of disturbed pelagic sediment of early Pleistocene age was recovered within the core catcher. Site U1374 has an early Pleistocene pelagic cap overlying older sediment, including sandstone that contains nannofossils of late Maastrichtian (latest Cretaceous) age. Indurated sediments sampled from Site U1375 contain nannofossils indicative of the early Paleocene, whereas the overlying pelagic sediments are Pliocene to Pleistocene in age. At Site U1376, three distinct chalks were recovered; each chalk contains a unique assemblage of nannofossils. Sample 330-U1376A-1R-1, 1 cm, contains a mixed Neogene assemblage. Sample 1R-1, 41 cm, contains a late Miocene assemblage, whereas Sample 1R-1, 76 cm, contains S. hetermorphus, indicative of the early to middle Miocene. At Site U1377, a small amount of disturbed sediment was recovered within the core catcher of Hole U1377A, which contains a mixed assemblage that is likely Pleistocene in age. In Hole U1377B, Sample 330-U1377B-1R-2, 0–1 cm, contains a middle Eocene assemblage that includes D. barbadiensis, D. binodosus, D. saipanensis, E. formosa, and C. grandis.

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