Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica
Three Precambrian basement provinces extend from the southern coast of Australiainto East Antarctica when reconstructed in a Gondwana configuration. These are, from east to west, the Mawson Craton, Albany-Fraser Orogen and Pinjarra Orogen. The Mawson Craton preserves evidence for tectonic activity f...
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ftcurtin:oai:espace.curtin.edu.au:20.500.11937/16177 2023-06-11T04:07:08+02:00 Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica Fitzsimons, Ian 2003 restricted https://hdl.handle.net/20.500.11937/16177 https://doi.org/10.1144/GSL.SP.2003.206.01.07 unknown Geological Society of London http://hdl.handle.net/20.500.11937/16177 doi:10.1144/GSL.SP.2003.206.01.07 Journal Article 2003 ftcurtin https://doi.org/20.500.11937/1617710.1144/GSL.SP.2003.206.01.07 2023-05-30T19:28:23Z Three Precambrian basement provinces extend from the southern coast of Australiainto East Antarctica when reconstructed in a Gondwana configuration. These are, from east to west, the Mawson Craton, Albany-Fraser Orogen and Pinjarra Orogen. The Mawson Craton preserves evidence for tectonic activity from the late Archaean until the earliest Mesoproterozoic. It is exposed in the Gawler Craton of South Australia, the Terre Adlie and King George V Land coastline of East Antarctica, and the Miller Range of the central Transantarctic Mountains. It may form a significant part of the ice-covered East Antarctic Shield although insufficient data are available to constrain its lateral extent. The Mawson Craton underwent late Palaeoproterozoic tectonism along its eastern margin (the Kimban Orogeny) and the occurrence of c. 1700 Maeclogites in the Transantarctic Mountains implies that this was in part a collisional event, althoughelsewhere it was characterized by low P/T metamorphism. The western margin of the MawsonCraton collided with a continental fragment comprising the Nawa Domain of the Gawler Craton, the Coompana Block, and the Nornalup Complex of Western Australia at c. 1560 Ma during the Kararan Orogeny. The western edge of the Nornalup Complex later collided with the Biranup Complex, Fraser Complex, and Yilgarn Craton to form the Albany-Fraser Orogen during two stages of tectonism at c. 1350 1260 and c. 1210 1140 Ma. The Pinjarra Orogen truncates the western margin of the Yilgarn Craton and Albany-Fraser Orogen, and contains allochthonous 1100 1000 Ma gneissic blocks transported along the craton margin during at least two stages of Neoproterozoic transcurrent movement. It divides East Gondwana into Australo-Antarctic and Indo-Antarctic domains, which are distinct continental fragments with different Proterozoic histories that were juxtaposed by oblique collision at 550 500 Ma during the assembly of Gondwana. The path taken by the Pinjarra Orogen beneath the Antarctic ice sheet is unknown, but it is of similar width ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica George V Land Ice Sheet Curtin University: espace Antarctic East Antarctica George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Miller Range ENVELOPE(157.000,157.000,-83.167,-83.167) The Antarctic Transantarctic Mountains Geological Society, London, Special Publications 206 1 93 130 |
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Curtin University: espace |
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description |
Three Precambrian basement provinces extend from the southern coast of Australiainto East Antarctica when reconstructed in a Gondwana configuration. These are, from east to west, the Mawson Craton, Albany-Fraser Orogen and Pinjarra Orogen. The Mawson Craton preserves evidence for tectonic activity from the late Archaean until the earliest Mesoproterozoic. It is exposed in the Gawler Craton of South Australia, the Terre Adlie and King George V Land coastline of East Antarctica, and the Miller Range of the central Transantarctic Mountains. It may form a significant part of the ice-covered East Antarctic Shield although insufficient data are available to constrain its lateral extent. The Mawson Craton underwent late Palaeoproterozoic tectonism along its eastern margin (the Kimban Orogeny) and the occurrence of c. 1700 Maeclogites in the Transantarctic Mountains implies that this was in part a collisional event, althoughelsewhere it was characterized by low P/T metamorphism. The western margin of the MawsonCraton collided with a continental fragment comprising the Nawa Domain of the Gawler Craton, the Coompana Block, and the Nornalup Complex of Western Australia at c. 1560 Ma during the Kararan Orogeny. The western edge of the Nornalup Complex later collided with the Biranup Complex, Fraser Complex, and Yilgarn Craton to form the Albany-Fraser Orogen during two stages of tectonism at c. 1350 1260 and c. 1210 1140 Ma. The Pinjarra Orogen truncates the western margin of the Yilgarn Craton and Albany-Fraser Orogen, and contains allochthonous 1100 1000 Ma gneissic blocks transported along the craton margin during at least two stages of Neoproterozoic transcurrent movement. It divides East Gondwana into Australo-Antarctic and Indo-Antarctic domains, which are distinct continental fragments with different Proterozoic histories that were juxtaposed by oblique collision at 550 500 Ma during the assembly of Gondwana. The path taken by the Pinjarra Orogen beneath the Antarctic ice sheet is unknown, but it is of similar width ... |
format |
Article in Journal/Newspaper |
author |
Fitzsimons, Ian |
spellingShingle |
Fitzsimons, Ian Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
author_facet |
Fitzsimons, Ian |
author_sort |
Fitzsimons, Ian |
title |
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
title_short |
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
title_full |
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
title_fullStr |
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
title_full_unstemmed |
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica |
title_sort |
proterozoic basement provinces of southern and southwestern australia, and their correlation with antarctica |
publisher |
Geological Society of London |
publishDate |
2003 |
url |
https://hdl.handle.net/20.500.11937/16177 https://doi.org/10.1144/GSL.SP.2003.206.01.07 |
long_lat |
ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(157.000,157.000,-83.167,-83.167) |
geographic |
Antarctic East Antarctica George V Land Miller Range The Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic East Antarctica George V Land Miller Range The Antarctic Transantarctic Mountains |
genre |
Antarc* Antarctic Antarctica East Antarctica George V Land Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica George V Land Ice Sheet |
op_relation |
http://hdl.handle.net/20.500.11937/16177 doi:10.1144/GSL.SP.2003.206.01.07 |
op_doi |
https://doi.org/20.500.11937/1617710.1144/GSL.SP.2003.206.01.07 |
container_title |
Geological Society, London, Special Publications |
container_volume |
206 |
container_issue |
1 |
container_start_page |
93 |
op_container_end_page |
130 |
_version_ |
1768379847088799744 |