2026-10-15T14:43:15Z https://oai.datacite.org/oai

doi:10.1594/pangaea.713614 2024-07-20T20:15:58Z PANGAEA PANGAEA.REPOSITORY

Sedimentology and Lead and Strontium isotope ratios of Miocene sediments from the Kerguelen Plateau Joseph, Leah H Rea, David K van der Pluijm, Ben A Gleason, James D PANGAEA 2002 Issued: 2002 doi:10.1016/s0012-821x(02)00661-1 Composite Core Drilling/drill rig Leg119 Joides Resolution Ocean Drilling Program (ODP) 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. 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 en Collection Supplementary Publication Series of Datasets application/zip Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode