Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes
The presented sedimentological, geochemical and paleoceanographical work is intended to improve the understanding of the regional influence of West Antarctic Ice Sheet dynamics and changes in oceanographic conditions on (1) sedimentary processes and (2) the preservation of proxies in the sedimentary...
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Language: | English |
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Universität Bremen
2007
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/2531 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110981 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2531 2023-05-15T13:42:31+02:00 Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes Untersuchungen zur glazialen Zyklizität des Spätmiozäns und Pliozäns an einem Sedimentkern aus einer Tiefseedrift am Kontinentalhang der westantarktischen Halbinsel:Sedimentäre und diagenetische Prozesse Hepp, Daniel A. Mörz, Tobias Stein, Rüdiger 2007-07-22 application/pdf https://media.suub.uni-bremen.de/handle/elib/2531 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110981 eng eng Universität Bremen FB5 Geowissenschaften https://media.suub.uni-bremen.de/handle/elib/2531 urn:nbn:de:gbv:46-diss000110981 info:eu-repo/semantics/openAccess Early diagenesis early Pliocene ice sheet dynamic magnetic susceptibility minima zone ODP Site 1095 Pliocene warming sedimentary processes Sedimentdrift slope failure frequency West Antarctic Peninsula 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2007 ftsubbremen 2022-11-09T07:09:50Z The presented sedimentological, geochemical and paleoceanographical work is intended to improve the understanding of the regional influence of West Antarctic Ice Sheet dynamics and changes in oceanographic conditions on (1) sedimentary processes and (2) the preservation of proxies in the sedimentary record. A crucial feature for interpreting ice sheet dynamics is the understanding of the glacial driven sedimentary transport system across the shelf to the slope and subsequently to deep-sea sediment bodies. Sediment physical and geochemical records, and X-ray images derived from ODP Site 1095 (West Antarctic Peninsula) were used to identify pattern in glacial-interglacial cyclicity and associated sedimentary and diagenetic processes of the late Miocene and Pliocene. A prominent feature is the cyclic loss of the magnetic susceptibility signal at the glacial-to-interglacial transitions, which is related to ice sheet collapses, meltwater formations, high fluxes of organic matter, and temporary suboxic to anoxic near surface sediment conditions at the end of the deglaciation phases. A quantification of the slope failure frequency reflects short and rapid but cyclic ice advances every ~375 yrs. Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctic Peninsula Ice Sheet Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic Antarctic Peninsula The Antarctic West Antarctic Ice Sheet |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Early diagenesis early Pliocene ice sheet dynamic magnetic susceptibility minima zone ODP Site 1095 Pliocene warming sedimentary processes Sedimentdrift slope failure frequency West Antarctic Peninsula 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
Early diagenesis early Pliocene ice sheet dynamic magnetic susceptibility minima zone ODP Site 1095 Pliocene warming sedimentary processes Sedimentdrift slope failure frequency West Antarctic Peninsula 550 550 Earth sciences and geology ddc:550 Hepp, Daniel A. Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
topic_facet |
Early diagenesis early Pliocene ice sheet dynamic magnetic susceptibility minima zone ODP Site 1095 Pliocene warming sedimentary processes Sedimentdrift slope failure frequency West Antarctic Peninsula 550 550 Earth sciences and geology ddc:550 |
description |
The presented sedimentological, geochemical and paleoceanographical work is intended to improve the understanding of the regional influence of West Antarctic Ice Sheet dynamics and changes in oceanographic conditions on (1) sedimentary processes and (2) the preservation of proxies in the sedimentary record. A crucial feature for interpreting ice sheet dynamics is the understanding of the glacial driven sedimentary transport system across the shelf to the slope and subsequently to deep-sea sediment bodies. Sediment physical and geochemical records, and X-ray images derived from ODP Site 1095 (West Antarctic Peninsula) were used to identify pattern in glacial-interglacial cyclicity and associated sedimentary and diagenetic processes of the late Miocene and Pliocene. A prominent feature is the cyclic loss of the magnetic susceptibility signal at the glacial-to-interglacial transitions, which is related to ice sheet collapses, meltwater formations, high fluxes of organic matter, and temporary suboxic to anoxic near surface sediment conditions at the end of the deglaciation phases. A quantification of the slope failure frequency reflects short and rapid but cyclic ice advances every ~375 yrs. |
author2 |
Mörz, Tobias Stein, Rüdiger |
format |
Doctoral or Postdoctoral Thesis |
author |
Hepp, Daniel A. |
author_facet |
Hepp, Daniel A. |
author_sort |
Hepp, Daniel A. |
title |
Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
title_short |
Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
title_full |
Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
title_fullStr |
Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
title_full_unstemmed |
Late Miocene-Pliocene glacial cyclicity in a deep-sea sediment drift on the Antarctic Peninsula continental margin: Sedimentary and diagenetic processes |
title_sort |
late miocene-pliocene glacial cyclicity in a deep-sea sediment drift on the antarctic peninsula continental margin: sedimentary and diagenetic processes |
publisher |
Universität Bremen |
publishDate |
2007 |
url |
https://media.suub.uni-bremen.de/handle/elib/2531 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110981 |
geographic |
Antarctic Antarctic Peninsula The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2531 urn:nbn:de:gbv:46-diss000110981 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766168733429006336 |