Sedimentology and Lead and Strontium isotope ratios of Miocene sediments from the Kerguelen Plateau, supplement to: Joseph, Leah H; Rea, David K; van der Pluijm, Ben A; Gleason, James D (2002): Antarctic environmental variability since the late Miocene: ODP Site 745, the East Kerguelen sediment drift. Earth and Planetary Science Letters, 201(1), 127-142

Characterization of sediment from Ocean Drilling Program Site 745, representing the East Kerguelen Ridge sediment drift, addresses important issues surrounding the timing of Miocene to present East Antarctic ice sheet stability and oceanic environmental change. Our results show three periods of grea...

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Bibliographic Details
Main Authors: Joseph, Leah H, Rea, David K, van der Pluijm, Ben A, Gleason, James D
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2002
Subjects:
Composite Core
Drilling/drill rig
Leg119
Joides Resolution
Ocean Drilling Program ODP
Antarctic
East Antarctic Ice Sheet
Kerguelen
Kerguelen Ridge
Antarc*
Ice Sheet
Online Access:https://dx.doi.org/10.1594/pangaea.713614
https://doi.pangaea.de/10.1594/PANGAEA.713614
Description
Summary:Characterization of sediment from Ocean Drilling Program Site 745, representing the East Kerguelen Ridge sediment drift, addresses important issues surrounding the timing of Miocene to present East Antarctic ice sheet stability and oceanic environmental change. Our results show three periods of greatly enhanced accumulation of Antarctic-derived sediment, at 6.4-5.9 Ma, 4.9-4.4 Ma and 1.1-0.8 Ma, potentially indicative of warmer, less stable ice sheets at these times. Conversely, the accumulation of Antarctic-derived material is comparatively less during the middle of the Pliocene warm epoch (4.8-3.2 Ma). The deep flow forming the Kerguelen drift was stronger during the latest Miocene and earliest Pliocene and has decreased in intensity continuously since then.

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