Antarctic Glacial History and Sea-Level Change

Barker, Peter F.; Camerlenghi, Angelo; Brachfeld, Stefanie Ann; Cowan, Ellen A.; Daniels, Jack; Domack, Eugene W.; Escutia, Carlota; Evans, Andrew; Eyles, Nicholas; Guyodo, Yohan; Iorio, Marina; Iwai, Masao; Kyte, Frank T.; Lauer, Christine; Maldonado, Andrés; Moerz, Tobias; Osterman, Lisa E.; Pudsey, Carol J.; Schuffert, Jeffrey D; Sjunneskog, Charlotte; Vigar, Kate; Weinheimer, Amy L.; Williams, Trevor; Winter, D.; Wolf-Welling, T. C. W.

doi:10.2973/odp.pr.178.1998

Cited by 11 publications

(17 citation statements)

References 5 publications

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“…These oozes contain a high-resolution millennial-and centuryscale record of variability in primary production and sea-ice extent (Domack et al, 2001;Barker et al, 2002). The periodicity observed in the Antarctic Peninsula Holocene records correlate with marine and continental records from other areas of the globe (Domack and Mayewski, 1999), which suggest a common driving mechanism for these changes.…”

Section: Continental Rise Sedimentation and Processesmentioning

confidence: 92%

“…Because the Antarctic Peninsula margin has experienced subsidence until recently, the climatic signal is complicated by the tectonic signal. This has resulted in two different interpretations regarding the depositional environment of the lower consolidated strata: one group considers the sediments recovered to represent deposition in a paleoshelf (topset), with the dip observed being caused by postdepositional subsidence (Barker et al, 2002), the other considers these deposits to form in an upper slope environment (Eyles et al, 2001).…”

Section: Oligocene To Pliocene Glacial Record From the Wilkes Land Comentioning

confidence: 98%

“…Leg 178 shelf drilling in the Antarctic Peninsula margin recovered Pliocene-Pleistocene unsorted and unconsolidated diamicts from the topset strata of a steep prograding wedge, which were interpreted as subglacial deposits (Barker et al, 1999(Barker et al, , 2002. With depth, glacial consolidated deposits were obtained from strata imaged in seismic profiles as seaward dipping.…”

Section: Oligocene To Pliocene Glacial Record From the Wilkes Land Comentioning

confidence: 99%

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Cenozoic ice sheet history from East Antarctic Wilkes Land continental margin sediments

Escutia

Santis

Donda

et al. 2005

Global and Planetary Change

117

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Section: Continental Rise Sedimentation and Processesmentioning

confidence: 92%

Section: Oligocene To Pliocene Glacial Record From the Wilkes Land Comentioning

confidence: 98%

Section: Oligocene To Pliocene Glacial Record From the Wilkes Land Comentioning

confidence: 99%

See 1 more Smart Citation

Cenozoic ice sheet history from East Antarctic Wilkes Land continental margin sediments

Escutia

Santis

Donda

et al. 2005

Global and Planetary Change

117

View full text Add to dashboard Cite

“…the Olympic Formation is constrained by competing 187 Re-187 Os maximum ages of 592 ± 14 Ma; Schaefer & Burgess (2003) and 658 ± 5.5 Ma; or the full details of the isotopic data remain to be published. Bart and Anderson (1995) and Barker et al (1998). Reprinted from Eyles (2002) with permission from Elsevier.…”

Section: Fig 12mentioning

confidence: 99%

Neoproterozoic Glaciated Basins: A Critical Review of the Snowball Earth Hypothesis by Comparison with Phanerozoic Glaciations

Etienne¹,

Allen

Rieu

et al. 2007

Glacial Sedimentary Processes and Products

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The Neoproterozoic is widely considered to have experienced some of the most severe climatic perturbations recorded in Earth history, with extensive glaciations often referred to as 'Snowball Earth' events. The Snowball Earth and competing hypotheses seek to explain a wide range of geological data on Neoproterozoic pre-, syn-and post-glacial successions including glacial sedimentology, chemostratigraphy, palaeoceanography, geochronology, palaeomagnetism and palaeogeography, geodynamics, tectonics, palaeontology and palaeobiogeochemistry. However, our understanding of the Phanerozoic and particularly the Cenozoic and contemporary glacial geological record is often relatively neglected when evaluating the evidence for apparent severe and prolonged periods of globally synchronous glaciation. This paper presents a review of the available geological data for Neoproterozoic glacial successions in the light of what we know about the Cenozoic and recent glacial record. Most Neoproterozoic successions are shown to exhibit spatial and temporal variability, with sediment stacking patterns and facies associations indicative of dynamic ice masses. These characteristics are typical of sedimentary sequences deposited along glaciated continental margins throughout Earth history, without the need for global synchroneity or necessarily severe climatic excursions. Although recurrent very widespread glaciation is envisaged in the Neoproterozoic, the presence of analogous glacigenic and interglacial successions in the Neoproterozoic and Cenozoic suggest the operation of a similar set of processes across a similar range of depositional environments. Consequently, an unambiguous sedimentary record of hydrological shutdown during a prolonged global glaciation appears to be lacking. This indicates either a preservational bias in Neoproterozoic successions of the advance and recessional stages of glacial epochs, or the occurrence of dynamic, non-global glaciations during the Neoproterozoic.

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“…About 4000 km of multichannel seismic reflection data (Rebesco et al, 1996) and three ODP Leg 178 site (Barker et al, 1999) allow a detailed investigation of the different sedimentary units. I will discuss the distribution of the seismic units of Drift 7, which was sampled at ODP Leg 178 Sites 1095 and 1096 and present a model for the interplay of down-slope and along-slope sediment transport.…”

Section: Introductionmentioning

confidence: 99%

Depositional patterns at Drift 7, Antarctic Peninsula: Along-slope versus down-slope sediment transport as indicators for oceanic currents and climatic conditions

Uenzelmann-Neben

2006

Marine Geology

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Understanding the processes and phases of deep-sea sediment drift formation is essential for a reconstruction of their evolution. This leads to a better understanding of the properties of oceanographic currents active during drift formation and in turn to information on the climatic conditions. A system of sediment drifts at the Antarctic Peninsula Pacific rise has been chosen to learn more about the Neogene evolution of both current systems and palaeo-climate in that area. Drift 7 was extensively surveyed (seismic and sampling), and two ODP Leg 178 sites were drilled there. Using this information, maps of reflectors depth and seismic unit thickness were compiled and interpreted regarding the controlling depositional processes. The depositional model shows an initially major along-slope sediment transport by a SW-setting bottom current (25-15 Ma), which deflected sediment supplied from the continental shelf. Between 15 Ma and 9.5 Ma down-slope transport took over as a result of the growth of the Antarctic Peninsula ice sheet. The SW setting bottom current appears to have broken down. Down-slope transport has decreased since 9.5 Ma, but a re-onset of the bottom current can only be observed since 5.3 Ma. The analysis has further shown that the nucleus of the drift is connected to a basement ridge. It is hence inferred that basement topography played a major role in the formation of this sediment drift.

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Antarctic Glacial History and Sea-Level Change

Cited by 11 publications

References 5 publications

Cenozoic ice sheet history from East Antarctic Wilkes Land continental margin sediments

Cenozoic ice sheet history from East Antarctic Wilkes Land continental margin sediments

Neoproterozoic Glaciated Basins: A Critical Review of the Snowball Earth Hypothesis by Comparison with Phanerozoic Glaciations

Depositional patterns at Drift 7, Antarctic Peninsula: Along-slope versus down-slope sediment transport as indicators for oceanic currents and climatic conditions

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