Sediment and physical record of ODP Site 178-1095

Sediments recovered from a drift deposit lying along the Pacific margin of the Antarctic Peninsula, (ODP Leg 178, Site 1095) provide a physical record of the Antarctic Circumpolar Current since late Miocene time. Determination of the strength of the magnetic fabric, anisotropy of magnetic susceptibi...

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Bibliographic Details
Main Authors: Hassold, Noralynn J C, Rea, David K, van der Pluijm, Ben A, Parés, Josep M
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2009
Subjects:
178-1095
178-1095A
178-1095B
178-1101A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg178
Ocean Drilling Program
ODP
South Pacific Ocean
Antarc*
Antarctic
Antarctic Peninsula
Ice cap
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.775979
https://doi.org/10.1594/PANGAEA.775979
Description
Summary:Sediments recovered from a drift deposit lying along the Pacific margin of the Antarctic Peninsula, (ODP Leg 178, Site 1095) provide a physical record of the Antarctic Circumpolar Current since late Miocene time. Determination of the strength of the magnetic fabric, anisotropy of magnetic susceptibility, provides a proxy for current strength. Fabric strength declines throughout the record from high values in the late Miocene; a pronounced step occurs between 5.0 and 5.5 Ma, and values decrease more gradually since about 3.0 Ma. The mass accumulation rate of terrigenous sediment derived from the Antarctic Peninsula indicates stabilization of the Antarctic Peninsula Ice Cap prior to about 8.5 Ma.

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