Paleomagnetic properties of ODP Hole 178-1101A, 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

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 depo...

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Bibliographic Details
Main Authors: Hassold, Noralynn J C, Rea, David K, van der Pluijm, Ben A, Parés, Josep M
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2009
Subjects:
Drilling/drill rig
Leg178
Joides Resolution
Ocean Drilling Program ODP
Antarctic
Antarctic Peninsula
Pacific
The Antarctic
Weddell
Weddell Sea
Antarc*
Ice cap
Ice Sheet
Online Access:https://dx.doi.org/10.1594/pangaea.777736
https://doi.pangaea.de/10.1594/PANGAEA.777736
Description
Summary: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.

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