Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology
Abstract: Does Cenozoic exhumation occur in the Larsemann Hills, East Antarctica? In the present paper, we conducted an apatite fission‐track thermochronologic study across the Larsemann Hills of East Antarctica. Our work reveals a Cenozoic exhumation event at 49.8 ± 12 Ma, which we interpret to be...
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crwiley:10.1111/j.1755-6724.2010.00142.x 2024-04-28T07:59:18+00:00 Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology CHEN, Xuanhua JIANG, Rongbao WAN, Jinglin XU, Gang JIANG, Mei CHEN, Danhong 2010 http://dx.doi.org/10.1111/j.1755-6724.2010.00142.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-6724.2010.00142.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-6724.2010.00142.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 84, issue 2, page 306-320 ISSN 1000-9515 1755-6724 Geology journal-article 2010 crwiley https://doi.org/10.1111/j.1755-6724.2010.00142.x 2024-04-02T08:44:38Z Abstract: Does Cenozoic exhumation occur in the Larsemann Hills, East Antarctica? In the present paper, we conducted an apatite fission‐track thermochronologic study across the Larsemann Hills of East Antarctica. Our work reveals a Cenozoic exhumation event at 49.8 ± 12 Ma, which we interpret to be a result of exhumation caused by crustal extension. Within the uncertainty of our age determination, the timing of extension in East Antarctica determined by our study is coeval with the onset time of rifting in West Antarctica at c.55 Ma. The apatite fission‐track cooling ages vary systematically in space, indicating a coherent block rotation of the Larsemann Hills region from c.50 Ma to c.10 Ma. This pattern of block tilting was locally disrupted by normal faulting along the Larsemann Hills detachment fault at c.5.4 Ma. The regional extension in the Larsemann Hills, East Antarctica was the result of tectonic evolution in this area, and may be related to the global extension. Through the discussion of Pan‐Gondwanaland movement, and Mesozoic and Cenozoic extensions in West and East Antarctica and adjacent areas, we suggest that the protracted Cenozoic cooling over the Larsemann Hills area was caused by extensional tectonics related to separation and formation of the India Ocean at the time of Gondwanaland breakup. Article in Journal/Newspaper Antarc* Antarctica East Antarctica West Antarctica Wiley Online Library Acta Geologica Sinica - English Edition 84 2 306 320 |
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Geology CHEN, Xuanhua JIANG, Rongbao WAN, Jinglin XU, Gang JIANG, Mei CHEN, Danhong Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
topic_facet |
Geology |
description |
Abstract: Does Cenozoic exhumation occur in the Larsemann Hills, East Antarctica? In the present paper, we conducted an apatite fission‐track thermochronologic study across the Larsemann Hills of East Antarctica. Our work reveals a Cenozoic exhumation event at 49.8 ± 12 Ma, which we interpret to be a result of exhumation caused by crustal extension. Within the uncertainty of our age determination, the timing of extension in East Antarctica determined by our study is coeval with the onset time of rifting in West Antarctica at c.55 Ma. The apatite fission‐track cooling ages vary systematically in space, indicating a coherent block rotation of the Larsemann Hills region from c.50 Ma to c.10 Ma. This pattern of block tilting was locally disrupted by normal faulting along the Larsemann Hills detachment fault at c.5.4 Ma. The regional extension in the Larsemann Hills, East Antarctica was the result of tectonic evolution in this area, and may be related to the global extension. Through the discussion of Pan‐Gondwanaland movement, and Mesozoic and Cenozoic extensions in West and East Antarctica and adjacent areas, we suggest that the protracted Cenozoic cooling over the Larsemann Hills area was caused by extensional tectonics related to separation and formation of the India Ocean at the time of Gondwanaland breakup. |
format |
Article in Journal/Newspaper |
author |
CHEN, Xuanhua JIANG, Rongbao WAN, Jinglin XU, Gang JIANG, Mei CHEN, Danhong |
author_facet |
CHEN, Xuanhua JIANG, Rongbao WAN, Jinglin XU, Gang JIANG, Mei CHEN, Danhong |
author_sort |
CHEN, Xuanhua |
title |
Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
title_short |
Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
title_full |
Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
title_fullStr |
Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
title_full_unstemmed |
Cenozoic Exhumation of Larsemann Hills, East Antarctica: Evidence from Apatite Fission‐track Thermochronology |
title_sort |
cenozoic exhumation of larsemann hills, east antarctica: evidence from apatite fission‐track thermochronology |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1755-6724.2010.00142.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-6724.2010.00142.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-6724.2010.00142.x |
genre |
Antarc* Antarctica East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica West Antarctica |
op_source |
Acta Geologica Sinica - English Edition volume 84, issue 2, page 306-320 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1755-6724.2010.00142.x |
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Acta Geologica Sinica - English Edition |
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84 |
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2 |
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306 |
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320 |
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1797572126001070080 |