First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications
A pilot palaeomagnetic study was conducted on the recently dated with in situ SHRIMP U-Pb method at 1134 ± 9 Ma (U-Pb, zircon and baddeleyite) Bunger Hills dykes of the Mawson Craton (East Antarctica). Of the six dykes sampled, three revealed meaningful results providing the first well-dated Mesopro...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/117973 2023-12-17T10:21:43+01:00 First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications Liu, Y. Li, Z. Pisarevsky, S. Kirscher, U. Mitchell, R. Stark, J. Clark, C. Hand, M. 2018 application/pdf http://hdl.handle.net/2440/117973 https://doi.org/10.1038/s41598-018-34748-2 en eng Nature Publishing Group http://purl.org/au-research/grants/arc/FL150100133 Scientific Reports, 2018; 8(1):16403-1-16403-12 2045-2322 http://hdl.handle.net/2440/117973 doi:10.1038/s41598-018-34748-2 Hand, M. [0000-0003-3743-9706] © The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. http://dx.doi.org/10.1038/s41598-018-34748-2 Journal article 2018 ftunivadelaidedl https://doi.org/10.1038/s41598-018-34748-2 2023-11-20T23:29:23Z A pilot palaeomagnetic study was conducted on the recently dated with in situ SHRIMP U-Pb method at 1134 ± 9 Ma (U-Pb, zircon and baddeleyite) Bunger Hills dykes of the Mawson Craton (East Antarctica). Of the six dykes sampled, three revealed meaningful results providing the first well-dated Mesoproterozoic palaeopole at 40.5°S, 150.1°E (A95 = 20°) for the Mawson Craton. Discordance between this new pole and two roughly coeval poles from Dronning Maud Land and Coats Land (East Antarctica) demonstrates that these two terranes were not rigidly connected to the Mawson Craton ca. 1134 Ma. Comparison between the new pole and that of the broadly coeval Lakeview dolerite from the North Australian Craton supports the putative ~40° late Neoproterozoic relative rotation between the North Australian Craton and the combined South and West Australian cratons. A mean ca. 1134 Ma pole for the Proto-Australia Craton is calculated by combining our new pole and that of the Lakeview dolerite after restoring the 40° intracontinental rotation. A comparison of this mean pole with the roughly coeval Abitibi dykes pole from Laurentia confirms that the SWEAT reconstruction of Australia and Laurentia was not viable for ca. 1134 Ma. Yebo Liu, Zheng-Xiang Li, Sergei A. Pisarevsky, Uwe Kirscher, Ross N. Mitchell, J. Camilla Stark, Chris Clark and Martin Hand Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica The University of Adelaide: Digital Library Bunger Hills ENVELOPE(100.883,100.883,-66.167,-66.167) Coats Land ENVELOPE(-27.500,-27.500,-77.000,-77.000) Dronning Maud Land East Antarctica Scientific Reports 8 1 |
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Open Polar |
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The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
description |
A pilot palaeomagnetic study was conducted on the recently dated with in situ SHRIMP U-Pb method at 1134 ± 9 Ma (U-Pb, zircon and baddeleyite) Bunger Hills dykes of the Mawson Craton (East Antarctica). Of the six dykes sampled, three revealed meaningful results providing the first well-dated Mesoproterozoic palaeopole at 40.5°S, 150.1°E (A95 = 20°) for the Mawson Craton. Discordance between this new pole and two roughly coeval poles from Dronning Maud Land and Coats Land (East Antarctica) demonstrates that these two terranes were not rigidly connected to the Mawson Craton ca. 1134 Ma. Comparison between the new pole and that of the broadly coeval Lakeview dolerite from the North Australian Craton supports the putative ~40° late Neoproterozoic relative rotation between the North Australian Craton and the combined South and West Australian cratons. A mean ca. 1134 Ma pole for the Proto-Australia Craton is calculated by combining our new pole and that of the Lakeview dolerite after restoring the 40° intracontinental rotation. A comparison of this mean pole with the roughly coeval Abitibi dykes pole from Laurentia confirms that the SWEAT reconstruction of Australia and Laurentia was not viable for ca. 1134 Ma. Yebo Liu, Zheng-Xiang Li, Sergei A. Pisarevsky, Uwe Kirscher, Ross N. Mitchell, J. Camilla Stark, Chris Clark and Martin Hand |
format |
Article in Journal/Newspaper |
author |
Liu, Y. Li, Z. Pisarevsky, S. Kirscher, U. Mitchell, R. Stark, J. Clark, C. Hand, M. |
spellingShingle |
Liu, Y. Li, Z. Pisarevsky, S. Kirscher, U. Mitchell, R. Stark, J. Clark, C. Hand, M. First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
author_facet |
Liu, Y. Li, Z. Pisarevsky, S. Kirscher, U. Mitchell, R. Stark, J. Clark, C. Hand, M. |
author_sort |
Liu, Y. |
title |
First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
title_short |
First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
title_full |
First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
title_fullStr |
First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
title_full_unstemmed |
First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications |
title_sort |
first precambrian palaeomagnetic data from the mawson craton (east antarctica) and tectonic implications |
publisher |
Nature Publishing Group |
publishDate |
2018 |
url |
http://hdl.handle.net/2440/117973 https://doi.org/10.1038/s41598-018-34748-2 |
long_lat |
ENVELOPE(100.883,100.883,-66.167,-66.167) ENVELOPE(-27.500,-27.500,-77.000,-77.000) |
geographic |
Bunger Hills Coats Land Dronning Maud Land East Antarctica |
geographic_facet |
Bunger Hills Coats Land Dronning Maud Land East Antarctica |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica |
op_source |
http://dx.doi.org/10.1038/s41598-018-34748-2 |
op_relation |
http://purl.org/au-research/grants/arc/FL150100133 Scientific Reports, 2018; 8(1):16403-1-16403-12 2045-2322 http://hdl.handle.net/2440/117973 doi:10.1038/s41598-018-34748-2 Hand, M. [0000-0003-3743-9706] |
op_rights |
© The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_doi |
https://doi.org/10.1038/s41598-018-34748-2 |
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Scientific Reports |
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