Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study
The formation of the Transantarctic Mountains (TAM) is strictly related to the evolution of the West Antarctic Rift system, but the timing of their exhumation is still not fully assessed. In this work, we provide new apatite fission-track data collected on the region between the Royal Society Range...
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2014
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Online Access: | http://hdl.handle.net/11590/140024 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/140024 2023-10-09T21:47:06+02:00 Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study Zattin M Andreucci B ROSSETTI, FEDERICO Talarico F. PACE, DONATO Zattin, M Pace, Donato Andreucci, B Rossetti, Federico Talarico, F. 2014 http://hdl.handle.net/11590/140024 eng eng volume:630 firstpage:158 lastpage:165 numberofpages:8 journal:TECTONOPHYSICS http://hdl.handle.net/11590/140024 info:eu-repo/semantics/article 2014 ftunivroma3iris 2023-09-24T18:19:28Z The formation of the Transantarctic Mountains (TAM) is strictly related to the evolution of the West Antarctic Rift system, but the timing of their exhumation is still not fully assessed. In this work, we provide new apatite fission-track data collected on the region between the Royal Society Range and the Britannia Range. Cooling ages are late Eocene–Oligocene in the center of the region but they get older both northwards and southwards. We infer that exhumation was strictly controlled by TAM-parallel fault strands that were active after the Oligocene. The Royal Society Range and the Britannia Range represent transition zones corresponding to transverse structures, probably inherited from early basement crustal discontinuities and reactivated as transfer regions during rift propagation. The exhumation of the investigated region has been then modeled and predicted thermochronological ages have been compared with detrital data from the Miocene sedimentary succession drilled in the Victoria Land Basin. Results indicate that this sector of the TAM is the most probable candidate for the source of sediments and that during the Neogene 3 km (but up to 5 km) of rocks was exhumed. Article in Journal/Newspaper Antarc* Antarctic Victoria Land Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic Britannia ENVELOPE(-62.681,-62.681,-64.718,-64.718) Britannia Range ENVELOPE(158.000,158.000,-80.000,-80.000) Royal Society Range ENVELOPE(162.667,162.667,-78.167,-78.167) Transantarctic Mountains Victoria Land |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
description |
The formation of the Transantarctic Mountains (TAM) is strictly related to the evolution of the West Antarctic Rift system, but the timing of their exhumation is still not fully assessed. In this work, we provide new apatite fission-track data collected on the region between the Royal Society Range and the Britannia Range. Cooling ages are late Eocene–Oligocene in the center of the region but they get older both northwards and southwards. We infer that exhumation was strictly controlled by TAM-parallel fault strands that were active after the Oligocene. The Royal Society Range and the Britannia Range represent transition zones corresponding to transverse structures, probably inherited from early basement crustal discontinuities and reactivated as transfer regions during rift propagation. The exhumation of the investigated region has been then modeled and predicted thermochronological ages have been compared with detrital data from the Miocene sedimentary succession drilled in the Victoria Land Basin. Results indicate that this sector of the TAM is the most probable candidate for the source of sediments and that during the Neogene 3 km (but up to 5 km) of rocks was exhumed. |
author2 |
Zattin, M Pace, Donato Andreucci, B Rossetti, Federico Talarico, F. |
format |
Article in Journal/Newspaper |
author |
Zattin M Andreucci B ROSSETTI, FEDERICO Talarico F. PACE, DONATO |
spellingShingle |
Zattin M Andreucci B ROSSETTI, FEDERICO Talarico F. PACE, DONATO Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
author_facet |
Zattin M Andreucci B ROSSETTI, FEDERICO Talarico F. PACE, DONATO |
author_sort |
Zattin M |
title |
Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
title_short |
Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
title_full |
Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
title_fullStr |
Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
title_full_unstemmed |
Cenozoic erosion of the Transantarctic Mountains: A source-to-sink thermochronological study |
title_sort |
cenozoic erosion of the transantarctic mountains: a source-to-sink thermochronological study |
publishDate |
2014 |
url |
http://hdl.handle.net/11590/140024 |
long_lat |
ENVELOPE(-62.681,-62.681,-64.718,-64.718) ENVELOPE(158.000,158.000,-80.000,-80.000) ENVELOPE(162.667,162.667,-78.167,-78.167) |
geographic |
Antarctic Britannia Britannia Range Royal Society Range Transantarctic Mountains Victoria Land |
geographic_facet |
Antarctic Britannia Britannia Range Royal Society Range Transantarctic Mountains Victoria Land |
genre |
Antarc* Antarctic Victoria Land |
genre_facet |
Antarc* Antarctic Victoria Land |
op_relation |
volume:630 firstpage:158 lastpage:165 numberofpages:8 journal:TECTONOPHYSICS http://hdl.handle.net/11590/140024 |
_version_ |
1779309860844732416 |