The subglacial geology of Wilkes Land, East Antarctica
Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New ma...
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ftnerc:oai:nora.nerc.ac.uk:506682 2023-05-15T13:48:08+02:00 The subglacial geology of Wilkes Land, East Antarctica Aitken, A.R.A. Young, D.A. Ferraccioli, F. Betts, P.G. Greenbaum, J.S. Richter, T.G. Roberts, J.L. Blankenship, D.D. Siegert, M.J. 2014-04-16 text http://nora.nerc.ac.uk/id/eprint/506682/ https://nora.nerc.ac.uk/id/eprint/506682/1/grl51556.pdf https://doi.org/10.1002/2014GL059405 en eng Wiley https://nora.nerc.ac.uk/id/eprint/506682/1/grl51556.pdf Aitken, A.R.A.; Young, D.A.; Ferraccioli, F. orcid:0000-0002-9347-4736 Betts, P.G.; Greenbaum, J.S.; Richter, T.G.; Roberts, J.L.; Blankenship, D.D.; Siegert, M.J. 2014 The subglacial geology of Wilkes Land, East Antarctica. Geophysical Research Letters, 41 (7). 2390-2400. https://doi.org/10.1002/2014GL059405 <https://doi.org/10.1002/2014GL059405> Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1002/2014GL059405 2023-02-04T19:39:24Z Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins, and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography. The preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Wilkes Land Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica East Antarctic Ice Sheet Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Geophysical Research Letters 41 7 2390 2400 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins, and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography. The preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. |
format |
Article in Journal/Newspaper |
author |
Aitken, A.R.A. Young, D.A. Ferraccioli, F. Betts, P.G. Greenbaum, J.S. Richter, T.G. Roberts, J.L. Blankenship, D.D. Siegert, M.J. |
spellingShingle |
Aitken, A.R.A. Young, D.A. Ferraccioli, F. Betts, P.G. Greenbaum, J.S. Richter, T.G. Roberts, J.L. Blankenship, D.D. Siegert, M.J. The subglacial geology of Wilkes Land, East Antarctica |
author_facet |
Aitken, A.R.A. Young, D.A. Ferraccioli, F. Betts, P.G. Greenbaum, J.S. Richter, T.G. Roberts, J.L. Blankenship, D.D. Siegert, M.J. |
author_sort |
Aitken, A.R.A. |
title |
The subglacial geology of Wilkes Land, East Antarctica |
title_short |
The subglacial geology of Wilkes Land, East Antarctica |
title_full |
The subglacial geology of Wilkes Land, East Antarctica |
title_fullStr |
The subglacial geology of Wilkes Land, East Antarctica |
title_full_unstemmed |
The subglacial geology of Wilkes Land, East Antarctica |
title_sort |
subglacial geology of wilkes land, east antarctica |
publisher |
Wiley |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/506682/ https://nora.nerc.ac.uk/id/eprint/506682/1/grl51556.pdf https://doi.org/10.1002/2014GL059405 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic East Antarctica East Antarctic Ice Sheet Wilkes Land |
geographic_facet |
Antarctic East Antarctica East Antarctic Ice Sheet 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 |
https://nora.nerc.ac.uk/id/eprint/506682/1/grl51556.pdf Aitken, A.R.A.; Young, D.A.; Ferraccioli, F. orcid:0000-0002-9347-4736 Betts, P.G.; Greenbaum, J.S.; Richter, T.G.; Roberts, J.L.; Blankenship, D.D.; Siegert, M.J. 2014 The subglacial geology of Wilkes Land, East Antarctica. Geophysical Research Letters, 41 (7). 2390-2400. https://doi.org/10.1002/2014GL059405 <https://doi.org/10.1002/2014GL059405> |
op_doi |
https://doi.org/10.1002/2014GL059405 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
7 |
container_start_page |
2390 |
op_container_end_page |
2400 |
_version_ |
1766248752479207424 |