Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica
The Amundsen Sea embayment of West Antarctica is in a prominent location for a series of tectonic and magmatic events from Paleozoic to Cenozoic times. Seismic, magnetic and gravity data from the embayment and Pine Island Bay (PIB) reveal the crustal thickness and some tectonic features. The Moho is...
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ftawi:oai:epic.awi.de:17161 2023-05-15T13:23:40+02:00 Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica Gohl, Karsten Teterin, D. Eagles, G. Netzeband, G. Grobys, Jan Parsiegla, Nicole Schlüter, Philip Leinweber, Volker Thor Larter, R. D. Uenzelmann-Neben, Gabriele Udintsev, G. B. 2007 https://epic.awi.de/id/eprint/17161/ https://hdl.handle.net/10013/epic.27003 unknown Gohl, K. orcid:0000-0002-9558-2116 , Teterin, D. , Eagles, G. , Netzeband, G. , Grobys, J. , Parsiegla, N. , Schlüter, P. , Leinweber, V. T. , Larter, R. D. , Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Udintsev, G. B. (2007) Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica , Proceedings for the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, 26 Aug - 1 Sept 2007 , U.S. Geological Survey and The National Academies; USGS OF- . hdl:10013/epic.27003 EPIC3Proceedings for the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, 26 Aug - 1 Sept 2007 , U.S. Geological Survey and The National Academies; USGS OF-, pp. 2007-1047 Conference notRev 2007 ftawi 2021-12-24T15:32:02Z The Amundsen Sea embayment of West Antarctica is in a prominent location for a series of tectonic and magmatic events from Paleozoic to Cenozoic times. Seismic, magnetic and gravity data from the embayment and Pine Island Bay (PIB) reveal the crustal thickness and some tectonic features. The Moho is 24-22 km deep on the shelf. NE-SW trending magnetic and gravity anomalies and the thin crust indicate a former rift zone that was active during or in the run-up to breakup between Chatham Rise and West Antarctica before or at 90 Ma. NW-SE trending gravity and magnetic anomalies, following a prolongation of Peacock Sound, indicate the extensional southern boundary to the Bellingshausen Plate which was active between 79 and 61 Ma. Conference Object Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Amundsen Sea Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Peacock ENVELOPE(169.450,169.450,-72.217,-72.217) Peacock Sound ENVELOPE(-102.000,-102.000,-72.500,-72.500) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) West Antarctica |
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 Amundsen Sea embayment of West Antarctica is in a prominent location for a series of tectonic and magmatic events from Paleozoic to Cenozoic times. Seismic, magnetic and gravity data from the embayment and Pine Island Bay (PIB) reveal the crustal thickness and some tectonic features. The Moho is 24-22 km deep on the shelf. NE-SW trending magnetic and gravity anomalies and the thin crust indicate a former rift zone that was active during or in the run-up to breakup between Chatham Rise and West Antarctica before or at 90 Ma. NW-SE trending gravity and magnetic anomalies, following a prolongation of Peacock Sound, indicate the extensional southern boundary to the Bellingshausen Plate which was active between 79 and 61 Ma. |
format |
Conference Object |
author |
Gohl, Karsten Teterin, D. Eagles, G. Netzeband, G. Grobys, Jan Parsiegla, Nicole Schlüter, Philip Leinweber, Volker Thor Larter, R. D. Uenzelmann-Neben, Gabriele Udintsev, G. B. |
spellingShingle |
Gohl, Karsten Teterin, D. Eagles, G. Netzeband, G. Grobys, Jan Parsiegla, Nicole Schlüter, Philip Leinweber, Volker Thor Larter, R. D. Uenzelmann-Neben, Gabriele Udintsev, G. B. Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
author_facet |
Gohl, Karsten Teterin, D. Eagles, G. Netzeband, G. Grobys, Jan Parsiegla, Nicole Schlüter, Philip Leinweber, Volker Thor Larter, R. D. Uenzelmann-Neben, Gabriele Udintsev, G. B. |
author_sort |
Gohl, Karsten |
title |
Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
title_short |
Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
title_full |
Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
title_fullStr |
Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
title_full_unstemmed |
Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica |
title_sort |
geophysical survey reveals tectonic structures in the amundsen sea embayment, west antarctica |
publishDate |
2007 |
url |
https://epic.awi.de/id/eprint/17161/ https://hdl.handle.net/10013/epic.27003 |
long_lat |
ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(169.450,169.450,-72.217,-72.217) ENVELOPE(-102.000,-102.000,-72.500,-72.500) ENVELOPE(-102.000,-102.000,-74.750,-74.750) |
geographic |
Amundsen Sea Island Bay Peacock Peacock Sound Pine Island Bay West Antarctica |
geographic_facet |
Amundsen Sea Island Bay Peacock Peacock Sound Pine Island Bay West Antarctica |
genre |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Pine Island Pine Island Bay West Antarctica |
op_source |
EPIC3Proceedings for the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, 26 Aug - 1 Sept 2007 , U.S. Geological Survey and The National Academies; USGS OF-, pp. 2007-1047 |
op_relation |
Gohl, K. orcid:0000-0002-9558-2116 , Teterin, D. , Eagles, G. , Netzeband, G. , Grobys, J. , Parsiegla, N. , Schlüter, P. , Leinweber, V. T. , Larter, R. D. , Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Udintsev, G. B. (2007) Geophysical survey reveals tectonic structures in the Amundsen Sea embayment, West Antarctica , Proceedings for the 10th International Symposium on Antarctic Earth Sciences, Santa Barbara, 26 Aug - 1 Sept 2007 , U.S. Geological Survey and The National Academies; USGS OF- . hdl:10013/epic.27003 |
_version_ |
1766373962808295424 |