Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences
The distribution and internal architecture of seismostratigraphic sequences observed on the Antarctic continental slope and rise are results of sediment transport and deposition by bottom currents and ice sheets. Low energy input of detritus via a palaeo-delta originating in an area of the Amundsen...
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Flanders Marine Institute (VLIZ)
2014
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ftawi:oai:epic.awi.de:36247 2023-05-15T13:23:35+02:00 Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences Uenzelmann-Neben, Gabriele Gohl, Karsten Van Rooij, David Rueggeberg, Anders 2014-09-10 application/pdf https://epic.awi.de/id/eprint/36247/ https://epic.awi.de/id/eprint/36247/1/Uenzelmann-neben_Gohl-revised.pdf http://www.vliz.be/imisdocs/publications/264062.pdf https://hdl.handle.net/10013/epic.44111 https://hdl.handle.net/10013/epic.44111.d001 unknown Flanders Marine Institute (VLIZ) https://epic.awi.de/id/eprint/36247/1/Uenzelmann-neben_Gohl-revised.pdf https://hdl.handle.net/10013/epic.44111.d001 Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Gohl, K. orcid:0000-0002-9558-2116 (2014) Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences / D. Van Rooij and A. Rueggeberg (editors) , In: Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014., (VLIZ Special Publication 69), Oostende, Belgium, Flanders Marine Institute (VLIZ), 152 p., ISBN: 1377-0950 . hdl:10013/epic.44111 EPIC3Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014., (VLIZ Special Publication 69), Oostende, Belgium, Flanders Marine Institute (VLIZ), 152 p., pp. 81-82, ISBN: 1377-0950 Inbook peerRev 2014 ftawi 2021-12-24T15:39:49Z The distribution and internal architecture of seismostratigraphic sequences observed on the Antarctic continental slope and rise are results of sediment transport and deposition by bottom currents and ice sheets. Low energy input of detritus via a palaeo-delta originating in an area of the Amundsen Sea shelf and deposition of this material on the continental rise under sea ice coverage (60-21 Ma) was followed by glacial erosion in the hinterland of this part of West Antarctica (21-14.1 Ma), resulting in a larger depocentre and an increase in mass transport deposits. A higher sediment supply along a broad front with a focus via two palaeo-ice stream troughs resulted from a polythermal ice sheet. In the eastern Amundsen Sea rise the glaciogenic debris was shaped into levee-drifts by a re-circulating bottom current. A reduced sediment accumulation in the deep-sea subsequent indicates a reduced sediment supply probably in response to a colder and drier ice sheet (14.1-4 Ma). A dynamic ice sheet since 4 Ma delivered material offshore mainly via Abbott Trough and Pine Island Trough West. Interaction of this glaciogenic detritus with a west-setting bottom current resulted in the continued formation of levee-drifts in the eastern and central Amundsen Sea. Book Part Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Pine Island Sea ice West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic West Antarctica Amundsen Sea Pacific Abbott ENVELOPE(-62.133,-62.133,-64.100,-64.100) Pine Island Trough ENVELOPE(-101.841,-101.841,-75.011,-75.011) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The distribution and internal architecture of seismostratigraphic sequences observed on the Antarctic continental slope and rise are results of sediment transport and deposition by bottom currents and ice sheets. Low energy input of detritus via a palaeo-delta originating in an area of the Amundsen Sea shelf and deposition of this material on the continental rise under sea ice coverage (60-21 Ma) was followed by glacial erosion in the hinterland of this part of West Antarctica (21-14.1 Ma), resulting in a larger depocentre and an increase in mass transport deposits. A higher sediment supply along a broad front with a focus via two palaeo-ice stream troughs resulted from a polythermal ice sheet. In the eastern Amundsen Sea rise the glaciogenic debris was shaped into levee-drifts by a re-circulating bottom current. A reduced sediment accumulation in the deep-sea subsequent indicates a reduced sediment supply probably in response to a colder and drier ice sheet (14.1-4 Ma). A dynamic ice sheet since 4 Ma delivered material offshore mainly via Abbott Trough and Pine Island Trough West. Interaction of this glaciogenic detritus with a west-setting bottom current resulted in the continued formation of levee-drifts in the eastern and central Amundsen Sea. |
author2 |
Van Rooij, David Rueggeberg, Anders |
format |
Book Part |
author |
Uenzelmann-Neben, Gabriele Gohl, Karsten |
spellingShingle |
Uenzelmann-Neben, Gabriele Gohl, Karsten Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
author_facet |
Uenzelmann-Neben, Gabriele Gohl, Karsten |
author_sort |
Uenzelmann-Neben, Gabriele |
title |
Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
title_short |
Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
title_full |
Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
title_fullStr |
Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
title_full_unstemmed |
Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences |
title_sort |
early miocene glaciation in the amundsen sea, southern pacific: a study of the distribution of sedimentary sequences |
publisher |
Flanders Marine Institute (VLIZ) |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/36247/ https://epic.awi.de/id/eprint/36247/1/Uenzelmann-neben_Gohl-revised.pdf http://www.vliz.be/imisdocs/publications/264062.pdf https://hdl.handle.net/10013/epic.44111 https://hdl.handle.net/10013/epic.44111.d001 |
long_lat |
ENVELOPE(-62.133,-62.133,-64.100,-64.100) ENVELOPE(-101.841,-101.841,-75.011,-75.011) |
geographic |
Antarctic The Antarctic West Antarctica Amundsen Sea Pacific Abbott Pine Island Trough |
geographic_facet |
Antarctic The Antarctic West Antarctica Amundsen Sea Pacific Abbott Pine Island Trough |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Pine Island Sea ice West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Pine Island Sea ice West Antarctica |
op_source |
EPIC3Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014., (VLIZ Special Publication 69), Oostende, Belgium, Flanders Marine Institute (VLIZ), 152 p., pp. 81-82, ISBN: 1377-0950 |
op_relation |
https://epic.awi.de/id/eprint/36247/1/Uenzelmann-neben_Gohl-revised.pdf https://hdl.handle.net/10013/epic.44111.d001 Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Gohl, K. orcid:0000-0002-9558-2116 (2014) Early Miocene glaciation in the Amundsen Sea, Southern Pacific: a Study of the distribution of sedimentary sequences / D. Van Rooij and A. Rueggeberg (editors) , In: Book of Abstracts. 2nd Deep-Water Circulation Congress: The Contourite Log-book. Ghent, Belgium, 10-12 September 2014., (VLIZ Special Publication 69), Oostende, Belgium, Flanders Marine Institute (VLIZ), 152 p., ISBN: 1377-0950 . hdl:10013/epic.44111 |
_version_ |
1766373297008672768 |