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

• 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

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.