The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica
Sedimentary basins beneath the East Antarctic Ice Sheet (EAIS) have immense potential to inform models of the tectonic evolution of East Antarctica and its ice-sheet. However, even basic characteristics such as thickness and extent are often unknown. Using airborne geophysical data, we resolve the t...
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Online Access: | https://doi.org/10.1002/2016GL071063 http://ecite.utas.edu.au/114868 |
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ftunivtasecite:oai:ecite.utas.edu.au:114868 2023-05-15T13:49:03+02:00 The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica Maritati, A Aitken, ARA Young, DA Roberts, JL Blankenship, DD Siegert, MJ 2016 application/pdf https://doi.org/10.1002/2016GL071063 http://ecite.utas.edu.au/114868 en eng Amer Geophysical Union http://ecite.utas.edu.au/114868/1/Maritati_et_al-2016-Geophysical_Research_Letters.pdf http://dx.doi.org/10.1002/2016GL071063 Maritati, A and Aitken, ARA and Young, DA and Roberts, JL and Blankenship, DD and Siegert, MJ, The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica, Geophysical Research Letters, 43, (20) pp. 10728-10737. ISSN 0094-8276 (2016) [Refereed Article] http://ecite.utas.edu.au/114868 Earth Sciences Physical Geography and Environmental Geoscience Glaciology Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.1002/2016GL071063 2019-12-13T22:14:43Z Sedimentary basins beneath the East Antarctic Ice Sheet (EAIS) have immense potential to inform models of the tectonic evolution of East Antarctica and its ice-sheet. However, even basic characteristics such as thickness and extent are often unknown. Using airborne geophysical data, we resolve the tectonic architecture of the Knox Subglacial Sedimentary Basin in western Wilkes Land. In addition, we apply an erosion restoration model to reconstruct the original basin geometry for which we resolve geometry typical of a transtensional pull-apart basin. The tectonic architecture strongly indicates formation as a consequence of the rifting of India from East Gondwana from ca. 160-130 Ma, and we suggest a spatial link with the western Mentelle Basin offshore Western Australia. The erosion restoration model shows that erosion is confined within the rift margins, suggesting that rift structure has strongly influenced the evolution of the Denman and Scott ice streams. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Wilkes Land eCite UTAS (University of Tasmania) Antarctic East Antarctic Ice Sheet East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Geophysical Research Letters 43 20 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology Maritati, A Aitken, ARA Young, DA Roberts, JL Blankenship, DD Siegert, MJ The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Glaciology |
description |
Sedimentary basins beneath the East Antarctic Ice Sheet (EAIS) have immense potential to inform models of the tectonic evolution of East Antarctica and its ice-sheet. However, even basic characteristics such as thickness and extent are often unknown. Using airborne geophysical data, we resolve the tectonic architecture of the Knox Subglacial Sedimentary Basin in western Wilkes Land. In addition, we apply an erosion restoration model to reconstruct the original basin geometry for which we resolve geometry typical of a transtensional pull-apart basin. The tectonic architecture strongly indicates formation as a consequence of the rifting of India from East Gondwana from ca. 160-130 Ma, and we suggest a spatial link with the western Mentelle Basin offshore Western Australia. The erosion restoration model shows that erosion is confined within the rift margins, suggesting that rift structure has strongly influenced the evolution of the Denman and Scott ice streams. |
format |
Article in Journal/Newspaper |
author |
Maritati, A Aitken, ARA Young, DA Roberts, JL Blankenship, DD Siegert, MJ |
author_facet |
Maritati, A Aitken, ARA Young, DA Roberts, JL Blankenship, DD Siegert, MJ |
author_sort |
Maritati, A |
title |
The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
title_short |
The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
title_full |
The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
title_fullStr |
The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
title_full_unstemmed |
The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica |
title_sort |
tectonic development and erosion of the knox subglacial sedimentary basin, east antarctica |
publisher |
Amer Geophysical Union |
publishDate |
2016 |
url |
https://doi.org/10.1002/2016GL071063 http://ecite.utas.edu.au/114868 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic East Antarctic Ice Sheet East Antarctica Wilkes Land |
geographic_facet |
Antarctic East Antarctic Ice Sheet East Antarctica Wilkes Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Wilkes Land |
op_relation |
http://ecite.utas.edu.au/114868/1/Maritati_et_al-2016-Geophysical_Research_Letters.pdf http://dx.doi.org/10.1002/2016GL071063 Maritati, A and Aitken, ARA and Young, DA and Roberts, JL and Blankenship, DD and Siegert, MJ, The tectonic development and erosion of the Knox Subglacial Sedimentary Basin, East Antarctica, Geophysical Research Letters, 43, (20) pp. 10728-10737. ISSN 0094-8276 (2016) [Refereed Article] http://ecite.utas.edu.au/114868 |
op_doi |
https://doi.org/10.1002/2016GL071063 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
20 |
_version_ |
1766250690704834560 |