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Provenance Of Pleistocene Sediments In The Andrill And-1b Drillcore: Clay And Heavy Mineral Data, Giovanna Giorgetti, Franco M. Talarico, Sonia Sandroni, Antonio Zeoli

ANDRILL Research and Publications

The cryosphere in the McMurdo Sound region has undergone significant modifications during the last 1 Ma. Consequently, the sedimentary sequences underlying the modern McMurdo Ice-Shelf provide geological data to reconstruct variations in transport and depositional mechanisms of terrigenous material due to variations in ice sheet extension, grounding line position and main icestream flow directions during glacial and interglacial periods. The present study aims to investigate the clay and heavy mineral assemblages of the late Pleistocene subglacial and glaciomarine sediments recovered during the ANDRILL-McMurdo Ice Shelf Project in Windless Bight (South of Ross Island). The analyses show that the sediments are …