Intraplate termination of transform faulting within the Antarctic continent
The sector of Antarctica facing Australia east of 139 °E is characterized by the abundance of exceptionally long oceanic fracture zones that are collinear to post-rift right-lateral strike–slip fault systems developed at the northeastern edge of the Antarctic continent. High-resolution reflection se...
Published in: | Earth and Planetary Science Letters |
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Online Access: | http://hdl.handle.net/11590/136127 https://doi.org/10.1016/j.epsl.2007.05.020 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/136127 2024-02-27T08:33:21+00:00 Intraplate termination of transform faulting within the Antarctic continent Storti F Morgan JP SALVINI, Francesco ROSSETTI, FEDERICO Storti, F Salvini, Francesco Rossetti, Federico Morgan, Jp 2007 http://hdl.handle.net/11590/136127 https://doi.org/10.1016/j.epsl.2007.05.020 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000248883300009 volume:260 issue:1-2 firstpage:115 lastpage:126 numberofpages:12 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11590/136127 doi:10.1016/j.epsl.2007.05.020 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34447288039 Antarctica fracture zone intraplate deformation info:eu-repo/semantics/article 2007 ftunivroma3iris https://doi.org/10.1016/j.epsl.2007.05.020 2024-01-31T17:34:57Z The sector of Antarctica facing Australia east of 139 °E is characterized by the abundance of exceptionally long oceanic fracture zones that are collinear to post-rift right-lateral strike–slip fault systems developed at the northeastern edge of the Antarctic continent. High-resolution reflection seismic profiles indicate recent strike–slip activity at the southeastern edge of the Balleny Fracture Zone, similar to what is observed onshore in North Victoria Land. The architecture, kinematics, and timing of this intraplate deformation at the northeastern edge of Antarctica cannot be reconciled with typical plate tectonic kinematics, in particular, with a classical divergent plate boundary environment. Here we show that combined geological and geophysical data in northeastern Antarctica support the post-rift southeastward reactivation of the passive margin east of 139 °E along intraplate rightlateral strike–slip deformation belts. These deformation belts include oceanic transform faults and their collinear oceanic fracture zone and continental shear zone extensions. A striking consequence is that there is intraplate accommodation of transform fault slip in this region of Earth's surface along fracture zones and a long-active region of intracontinental deformation that is ‘reusing’ prior plate boundary fault zones. As the intraplate termination of plate boundary transform faulting is not predicted by classical plate tectonic theory; this region is one of the most clear examples of the transition from rigid to semi-rigid plate tectonic deformation during the formation and long-lived incubation of a potential new plate boundary. Article in Journal/Newspaper Antarc* Antarctic Antarctica Victoria Land Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic The Antarctic Victoria Land Balleny Fracture Zone ENVELOPE(156.000,156.000,-62.000,-62.000) Earth and Planetary Science Letters 260 1-2 115 126 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
unknown |
topic |
Antarctica fracture zone intraplate deformation |
spellingShingle |
Antarctica fracture zone intraplate deformation Storti F Morgan JP SALVINI, Francesco ROSSETTI, FEDERICO Intraplate termination of transform faulting within the Antarctic continent |
topic_facet |
Antarctica fracture zone intraplate deformation |
description |
The sector of Antarctica facing Australia east of 139 °E is characterized by the abundance of exceptionally long oceanic fracture zones that are collinear to post-rift right-lateral strike–slip fault systems developed at the northeastern edge of the Antarctic continent. High-resolution reflection seismic profiles indicate recent strike–slip activity at the southeastern edge of the Balleny Fracture Zone, similar to what is observed onshore in North Victoria Land. The architecture, kinematics, and timing of this intraplate deformation at the northeastern edge of Antarctica cannot be reconciled with typical plate tectonic kinematics, in particular, with a classical divergent plate boundary environment. Here we show that combined geological and geophysical data in northeastern Antarctica support the post-rift southeastward reactivation of the passive margin east of 139 °E along intraplate rightlateral strike–slip deformation belts. These deformation belts include oceanic transform faults and their collinear oceanic fracture zone and continental shear zone extensions. A striking consequence is that there is intraplate accommodation of transform fault slip in this region of Earth's surface along fracture zones and a long-active region of intracontinental deformation that is ‘reusing’ prior plate boundary fault zones. As the intraplate termination of plate boundary transform faulting is not predicted by classical plate tectonic theory; this region is one of the most clear examples of the transition from rigid to semi-rigid plate tectonic deformation during the formation and long-lived incubation of a potential new plate boundary. |
author2 |
Storti, F Salvini, Francesco Rossetti, Federico Morgan, Jp |
format |
Article in Journal/Newspaper |
author |
Storti F Morgan JP SALVINI, Francesco ROSSETTI, FEDERICO |
author_facet |
Storti F Morgan JP SALVINI, Francesco ROSSETTI, FEDERICO |
author_sort |
Storti F |
title |
Intraplate termination of transform faulting within the Antarctic continent |
title_short |
Intraplate termination of transform faulting within the Antarctic continent |
title_full |
Intraplate termination of transform faulting within the Antarctic continent |
title_fullStr |
Intraplate termination of transform faulting within the Antarctic continent |
title_full_unstemmed |
Intraplate termination of transform faulting within the Antarctic continent |
title_sort |
intraplate termination of transform faulting within the antarctic continent |
publishDate |
2007 |
url |
http://hdl.handle.net/11590/136127 https://doi.org/10.1016/j.epsl.2007.05.020 |
long_lat |
ENVELOPE(156.000,156.000,-62.000,-62.000) |
geographic |
Antarctic The Antarctic Victoria Land Balleny Fracture Zone |
geographic_facet |
Antarctic The Antarctic Victoria Land Balleny Fracture Zone |
genre |
Antarc* Antarctic Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000248883300009 volume:260 issue:1-2 firstpage:115 lastpage:126 numberofpages:12 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11590/136127 doi:10.1016/j.epsl.2007.05.020 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34447288039 |
op_doi |
https://doi.org/10.1016/j.epsl.2007.05.020 |
container_title |
Earth and Planetary Science Letters |
container_volume |
260 |
container_issue |
1-2 |
container_start_page |
115 |
op_container_end_page |
126 |
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1792045244174303232 |