Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/117973
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Type: Journal article
Title: First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications
Author: Liu, Y.
Li, Z.
Pisarevsky, S.
Kirscher, U.
Mitchell, R.
Stark, J.
Clark, C.
Hand, M.
Citation: Scientific Reports, 2018; 8(1):16403-1-16403-12
Publisher: Nature Publishing Group
Issue Date: 2018
ISSN: 2045-2322
2045-2322
Statement of
Responsibility: 
Yebo Liu, Zheng-Xiang Li, Sergei A. Pisarevsky, Uwe Kirscher, Ross N. Mitchell, J. Camilla Stark, Chris Clark and Martin Hand
Abstract: 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.
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/.
RMID: 0030106496
DOI: 10.1038/s41598-018-34748-2
Grant ID: http://purl.org/au-research/grants/arc/FL150100133
Appears in Collections:Geology & Geophysics publications

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