Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia
Previous paleomagnetic work has appeared to demand the breakup of southwest United States−East Antarctic (SWEAT) type Rodinia reconstructions before ca. 750 Ma, significantly earlier than the stratigraphic record of rift-drift transition between 715 Ma and 650 Ma. Here we reanalyze Australian paleom...
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Geological Society of America Inc
2011
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Online Access: | https://hdl.handle.net/20.500.11937/15519 https://doi.org/10.1130/G31461.1 |
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ftcurtin:oai:espace.curtin.edu.au:20.500.11937/15519 2023-06-11T04:05:30+02:00 Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia Li, Zheng-Xiang Evans, D. 2011 restricted https://hdl.handle.net/20.500.11937/15519 https://doi.org/10.1130/G31461.1 unknown Geological Society of America Inc http://hdl.handle.net/20.500.11937/15519 doi:10.1130/G31461.1 Paterson and Petermann orogens breakup of Rodinia cross-continental megashear zone Journal Article 2011 ftcurtin https://doi.org/20.500.11937/1551910.1130/G31461.1 2023-05-30T19:28:00Z Previous paleomagnetic work has appeared to demand the breakup of southwest United States−East Antarctic (SWEAT) type Rodinia reconstructions before ca. 750 Ma, significantly earlier than the stratigraphic record of rift-drift transition between 715 Ma and 650 Ma. Here we reanalyze Australian paleomagnetic and regional tectonic data to produce a model in which the Precambrian Australian continent had a slightly different configuration before the breakup of Rodinia. A cross-continental megashear zone developed along the Paterson and Petermann orogens at ca. 650–550 Ma, during or after the breakup of Rodinia, manifested as an ∼40° clockwise rotation of the South and West Australian cratons relative to the North Australian craton around a vertical axis in Central Australia. This model reconciles major paleomagnetic discrepancies within Australia, and allows for a longer lifespan of SWEAT-like reconstructions of Rodinia that are consistent with the Neoproterozoic stratigraphic records of Australia and Laurentia. Article in Journal/Newspaper Antarc* Antarctic Curtin University: espace Antarctic Paterson ENVELOPE(-154.600,-154.600,-78.033,-78.033) Geology 39 1 39 42 |
institution |
Open Polar |
collection |
Curtin University: espace |
op_collection_id |
ftcurtin |
language |
unknown |
topic |
Paterson and Petermann orogens breakup of Rodinia cross-continental megashear zone |
spellingShingle |
Paterson and Petermann orogens breakup of Rodinia cross-continental megashear zone Li, Zheng-Xiang Evans, D. Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
topic_facet |
Paterson and Petermann orogens breakup of Rodinia cross-continental megashear zone |
description |
Previous paleomagnetic work has appeared to demand the breakup of southwest United States−East Antarctic (SWEAT) type Rodinia reconstructions before ca. 750 Ma, significantly earlier than the stratigraphic record of rift-drift transition between 715 Ma and 650 Ma. Here we reanalyze Australian paleomagnetic and regional tectonic data to produce a model in which the Precambrian Australian continent had a slightly different configuration before the breakup of Rodinia. A cross-continental megashear zone developed along the Paterson and Petermann orogens at ca. 650–550 Ma, during or after the breakup of Rodinia, manifested as an ∼40° clockwise rotation of the South and West Australian cratons relative to the North Australian craton around a vertical axis in Central Australia. This model reconciles major paleomagnetic discrepancies within Australia, and allows for a longer lifespan of SWEAT-like reconstructions of Rodinia that are consistent with the Neoproterozoic stratigraphic records of Australia and Laurentia. |
format |
Article in Journal/Newspaper |
author |
Li, Zheng-Xiang Evans, D. |
author_facet |
Li, Zheng-Xiang Evans, D. |
author_sort |
Li, Zheng-Xiang |
title |
Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
title_short |
Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
title_full |
Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
title_fullStr |
Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
title_full_unstemmed |
Late Neoproterozoic 40° intraplate rotation within Australia allows for a tighter-fi tting and longer-lasting Rodinia |
title_sort |
late neoproterozoic 40° intraplate rotation within australia allows for a tighter-fi tting and longer-lasting rodinia |
publisher |
Geological Society of America Inc |
publishDate |
2011 |
url |
https://hdl.handle.net/20.500.11937/15519 https://doi.org/10.1130/G31461.1 |
long_lat |
ENVELOPE(-154.600,-154.600,-78.033,-78.033) |
geographic |
Antarctic Paterson |
geographic_facet |
Antarctic Paterson |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://hdl.handle.net/20.500.11937/15519 doi:10.1130/G31461.1 |
op_doi |
https://doi.org/20.500.11937/1551910.1130/G31461.1 |
container_title |
Geology |
container_volume |
39 |
container_issue |
1 |
container_start_page |
39 |
op_container_end_page |
42 |
_version_ |
1768376583463108608 |