Unknown
PANGAEA
In:
Supplement to: Hassold, Noralynn J C; Rea, David K; van der Pluijm, Ben A; Parés, Josep M (2009): Mid-Pliocene to Recent abyssal current flow along the Antarctic Peninsula: Results from ODP Leg 178, Site 1101. Palaeogeography, Palaeoclimatology, Palaeoecology, 284(3-4), 120-128, https://doi.org/10.1016/j.palaeo.2009.09.011
Publication Date:
2024-01-09
Description:
Sediments recovered from a drift deposit located on the Pacific side of the Antarctic Peninsula (ODP Leg 178, Site 1101) give a physical record of a bottom current, sourced from the Weddell Sea Deep Water, for the past 3 Ma. Sediment grain size and magnetic fabric analyses indicate a contourite depositional environment and little change in the average intensity of this current. Terrigenous fluxes decreased around the time of the onset of Northern Hemisphere Glaciation, which we interpret as a freezing of the base of the Antarctic Peninsula Ice Cap. Terrigenous fluxes have increased since 1.7 Ma implying a possible return of the Antarctic Peninsula Ice Cap to a more wet-based ice sheet.
Keywords:
178-1101A; DRILL; Drilling/drill rig; Joides Resolution; Leg178; Ocean Drilling Program; ODP; South Pacific Ocean
Type:
Dataset
Format:
application/zip, 4 datasets
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