East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up
Recent geophysical surveys were designed to investigate the breakup process between India and East Antarctica and the effect of igneous activity on the formation of the Antarctic passive margin and the crust between the Kerguelen Plateau and Antarctica in the Princess Elizabeth Trough (PET). The Ker...
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ftawi:oai:epic.awi.de:18669 2024-09-09T19:12:01+00:00 East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up Gohl, Karsten Leitchenkov, G. Damaske, Daniel Parsiegla, Nicole Ehlers, Birte-Marie Guseva, Y. Gandyukhin, V. 2008 https://epic.awi.de/id/eprint/18669/ https://hdl.handle.net/10013/epic.31359 unknown Gohl, K. orcid:0000-0002-9558-2116 , Leitchenkov, G. , Damaske, D. , Parsiegla, N. , Ehlers, B. M. , Guseva, Y. and Gandyukhin, V. (2008) East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up , SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. . hdl:10013/epic.31359 EPIC3SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. Conference notRev 2008 ftawi 2024-06-24T04:00:42Z Recent geophysical surveys were designed to investigate the breakup process between India and East Antarctica and the effect of igneous activity on the formation of the Antarctic passive margin and the crust between the Kerguelen Plateau and Antarctica in the Princess Elizabeth Trough (PET). The Kerguelen Plateau marks one of the two most voluminous Large Igneous Provinces (LIP) in an oceanic setting and is attributed to a mantle hotspot emplaced at 120 Ma ago, about 15 m.y. after the previously suggested onset of seafloor spreading between India and Antarctica. Geophysical data analyses and modeling reveal a wide zone of highly extended continental crust on the Antarctic margin of Mac.Robertson Land. The partial continental affinity of the Southern Kerguelen Plateau, as indicated by earlier seismic data and ODP drill samples further north, continues to the southernmost limit of the plateau. Here, the continental crust must have been enormously thinned and fragmented as part of the rifting process between India and Antarctica. Ocean-bottom seismograph data indicate a narrow corridor of oceanic-type crust beneath the PET. Magmatic accretion to the crust is widely observed on both the plateau and the PET region. Conference Object Antarc* Antarctic Antarctica East Antarctica Mac.Robertson Land Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic East Antarctica Kerguelen Princess Elizabeth Trough ENVELOPE(83.000,83.000,-64.167,-64.167) Mac.Robertson Land ENVELOPE(65.000,65.000,-70.000,-70.000) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Recent geophysical surveys were designed to investigate the breakup process between India and East Antarctica and the effect of igneous activity on the formation of the Antarctic passive margin and the crust between the Kerguelen Plateau and Antarctica in the Princess Elizabeth Trough (PET). The Kerguelen Plateau marks one of the two most voluminous Large Igneous Provinces (LIP) in an oceanic setting and is attributed to a mantle hotspot emplaced at 120 Ma ago, about 15 m.y. after the previously suggested onset of seafloor spreading between India and Antarctica. Geophysical data analyses and modeling reveal a wide zone of highly extended continental crust on the Antarctic margin of Mac.Robertson Land. The partial continental affinity of the Southern Kerguelen Plateau, as indicated by earlier seismic data and ODP drill samples further north, continues to the southernmost limit of the plateau. Here, the continental crust must have been enormously thinned and fragmented as part of the rifting process between India and Antarctica. Ocean-bottom seismograph data indicate a narrow corridor of oceanic-type crust beneath the PET. Magmatic accretion to the crust is widely observed on both the plateau and the PET region. |
format |
Conference Object |
author |
Gohl, Karsten Leitchenkov, G. Damaske, Daniel Parsiegla, Nicole Ehlers, Birte-Marie Guseva, Y. Gandyukhin, V. |
spellingShingle |
Gohl, Karsten Leitchenkov, G. Damaske, Daniel Parsiegla, Nicole Ehlers, Birte-Marie Guseva, Y. Gandyukhin, V. East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
author_facet |
Gohl, Karsten Leitchenkov, G. Damaske, Daniel Parsiegla, Nicole Ehlers, Birte-Marie Guseva, Y. Gandyukhin, V. |
author_sort |
Gohl, Karsten |
title |
East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
title_short |
East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
title_full |
East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
title_fullStr |
East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
title_full_unstemmed |
East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up |
title_sort |
east antarctic margin and kerguelen plateau: constraints for india-antarctica break-up |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/18669/ https://hdl.handle.net/10013/epic.31359 |
long_lat |
ENVELOPE(83.000,83.000,-64.167,-64.167) ENVELOPE(65.000,65.000,-70.000,-70.000) |
geographic |
Antarctic The Antarctic East Antarctica Kerguelen Princess Elizabeth Trough Mac.Robertson Land |
geographic_facet |
Antarctic The Antarctic East Antarctica Kerguelen Princess Elizabeth Trough Mac.Robertson Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Mac.Robertson Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Mac.Robertson Land |
op_source |
EPIC3SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. |
op_relation |
Gohl, K. orcid:0000-0002-9558-2116 , Leitchenkov, G. , Damaske, D. , Parsiegla, N. , Ehlers, B. M. , Guseva, Y. and Gandyukhin, V. (2008) East Antarctic margin and Kerguelen Plateau: Constraints for India-Antarctica break-up , SCAR/IASC Open Science Conference, 8-11 July 2008, St. Petersburg. . hdl:10013/epic.31359 |
_version_ |
1809752453644550144 |