bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur
Abstract The Thiel Mountains are part of the Transantarctic Mountains (TAM) and occupy a strategic position close to the East-West Antarctic boundary. They occur in a region of relatively subdued topography distal from high topography and high relief of most of the TAM adjacent to the West Antarctic...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.571.3298 2023-05-15T13:51:28+02:00 bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur P. G. Fitzgerald S. L. Baldwin The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.3298 http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.3298 http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf text ftciteseerx 2016-01-08T12:32:35Z Abstract The Thiel Mountains are part of the Transantarctic Mountains (TAM) and occupy a strategic position close to the East-West Antarctic boundary. They occur in a region of relatively subdued topography distal from high topography and high relief of most of the TAM adjacent to the West Antarctic rift system. Low-temperature thermochronology on samples collected from the Reed Ridge granite on the north flank of the Thiel Mountains constrain the thermal and hence tectonic history. Apatite fission track data plus thermal models indicate cooling from ca. 165-150 Ma. In conjunction with 40Ar/39Ar K-feldspar data, the results indicate cooling was due to relatively slow erosional denudation, and not thermal relaxation following Jurassic tholeiitic magmatism. Denudation was most likely associated with the formation of the Jurassic rift system across Antarctica that marked the initial breakup of Gondwana. This is the oldest episode of denudation associated with formation of the present day TAM. Text Antarc* Antarctic Antarctica Ice Sheet Unknown Antarctic East Antarctic Ice Sheet Reed Ridge ENVELOPE(-91.667,-91.667,-85.033,-85.033) Thiel Mountains ENVELOPE(-91.000,-91.000,-85.250,-85.250) Transantarctic Mountains |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Abstract The Thiel Mountains are part of the Transantarctic Mountains (TAM) and occupy a strategic position close to the East-West Antarctic boundary. They occur in a region of relatively subdued topography distal from high topography and high relief of most of the TAM adjacent to the West Antarctic rift system. Low-temperature thermochronology on samples collected from the Reed Ridge granite on the north flank of the Thiel Mountains constrain the thermal and hence tectonic history. Apatite fission track data plus thermal models indicate cooling from ca. 165-150 Ma. In conjunction with 40Ar/39Ar K-feldspar data, the results indicate cooling was due to relatively slow erosional denudation, and not thermal relaxation following Jurassic tholeiitic magmatism. Denudation was most likely associated with the formation of the Jurassic rift system across Antarctica that marked the initial breakup of Gondwana. This is the oldest episode of denudation associated with formation of the present day TAM. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
P. G. Fitzgerald S. L. Baldwin |
spellingShingle |
P. G. Fitzgerald S. L. Baldwin bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
author_facet |
P. G. Fitzgerald S. L. Baldwin |
author_sort |
P. G. Fitzgerald |
title |
bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
title_short |
bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
title_full |
bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
title_fullStr |
bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
title_full_unstemmed |
bisect the continent and act as a geomorphic barrier for the East Antarctic Ice Sheet. The Thiel Mountains occur |
title_sort |
bisect the continent and act as a geomorphic barrier for the east antarctic ice sheet. the thiel mountains occur |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.3298 http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf |
long_lat |
ENVELOPE(-91.667,-91.667,-85.033,-85.033) ENVELOPE(-91.000,-91.000,-85.250,-85.250) |
geographic |
Antarctic East Antarctic Ice Sheet Reed Ridge Thiel Mountains Transantarctic Mountains |
geographic_facet |
Antarctic East Antarctic Ice Sheet Reed Ridge Thiel Mountains Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.3298 http://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766255345159634944 |