Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent
The Australia-Laurentia connection in the Paleoproterozoic to Mesoproterozoic supercontinent Nuna is thought to have initiated by ca. 1.6 Ga when both continents were locked in a proto-SWEAT (southwestern U.S.–East Antarctic) configuration. However, the longevity of that configuration is poorly cons...
| Published in: | Geology |
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| Main Authors: | , , , , , , , , , |
| Other Authors: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Geological Society of America
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10138/328009 |
| _version_ | 1821768883202162688 |
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| author | Kirscher, Uwe Mitchell, Ross N. Liu, Yebo Nordsvan, Adam R. Cox, Grant M. Pisarevsky, Sergei A. Wang, Chong Wu, Lei Murphy, J. Brendan Li, Zheng-Xiang |
| author2 | Department of Geosciences and Geography |
| author_facet | Kirscher, Uwe Mitchell, Ross N. Liu, Yebo Nordsvan, Adam R. Cox, Grant M. Pisarevsky, Sergei A. Wang, Chong Wu, Lei Murphy, J. Brendan Li, Zheng-Xiang |
| author_sort | Kirscher, Uwe |
| collection | HELDA – University of Helsinki Open Repository |
| container_issue | 2 |
| container_start_page | 174 |
| container_title | Geology |
| container_volume | 49 |
| description | The Australia-Laurentia connection in the Paleoproterozoic to Mesoproterozoic supercontinent Nuna is thought to have initiated by ca. 1.6 Ga when both continents were locked in a proto-SWEAT (southwestern U.S.–East Antarctic) configuration. However, the longevity of that configuration is poorly constrained. Here, we present a new high-quality paleomagnetic pole from the ca. 1.3 Ga Derim Derim sills of northern Australia that suggests Australia and Laurentia were in the same configuration at that time. This new paleopole also supports a connection between Australia and North China and, in conjunction with previously reported data from all continents, indicates that the breakup of Nuna largely occurred between ca. 1.3 and 1.2 Ga. The Australia-Laurentia connection in the Paleoproterozoic to Mesoproterozoic supercontinent Nuna is thought to have initiated by ca. 1.6 Ga when both continents were locked in a proto-SWEAT (southwestern U.S.-East Antarctic) configuration. However, the longevity of that configuration is poorly constrained. Here, we present a new high-quality paleomagnetic pole from the ca. 1.3 Ga Derim Derim sills of northern Australia that suggests Australia and Laurentia were in the same configuration at that time. This new paleopole also supports a connection between Australia and North China and, in conjunction with previously reported data from all continents, indicates that the breakup of Nuna largely occurred between ca. 1.3 and 1.2 Ga. Peer reviewed |
| format | Article in Journal/Newspaper |
| genre | Antarc* Antarctic |
| genre_facet | Antarc* Antarctic |
| geographic | Antarctic |
| geographic_facet | Antarctic |
| id | ftunivhelsihelda:oai:helda.helsinki.fi:10138/328009 |
| institution | Open Polar |
| language | English |
| op_collection_id | ftunivhelsihelda |
| op_container_end_page | 179 |
| op_relation | 10.1130/G47823.1 Funding was provided by an Australian Research Council Laureate Fellowship grant to Z.-X. Li, Curtin University (FL150100133); a Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences, grant (IGGCAS-201905), and National Natural Science Foundation of China grants (41890833 and 41888101) to Mitchell; a Ministry of Science and High Education of the Russian Federation grant (075-15-2019-1883) to Pisarevsky; and Future Energy Systems (FES) funds at the University of Alberta, Canada, to L. Wu. Access to the cores was provided by the Northern Territory Geological Survey and the Darwin Core Library (Australia). This is a contribution to the International Geoscience Programme 648 and is contribution 1526 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au).We thank Dennis Brown for handling the manuscript and Alan Collins, Phil McCausland, and one anonymous reviewer for impartial and constructive reviews. Kirscher , U , Mitchell , R N , Liu , Y , Nordsvan , A R , Cox , G M , Pisarevsky , S A , Wang , C , Wu , L , Murphy , J B & Li , Z-X 2021 , ' Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent ' , Geology , vol. 49 , no. 2 , pp. 174-179 . https://doi.org/10.1130/G47823.1 85099181789 2b082c68-31be-4fb1-93e3-cca9d8f9d0a7 http://hdl.handle.net/10138/328009 000613644100012 |
| op_rights | cc_by openAccess info:eu-repo/semantics/openAccess |
| publishDate | 2021 |
| publisher | Geological Society of America |
| record_format | openpolar |
| spelling | ftunivhelsihelda:oai:helda.helsinki.fi:10138/328009 2025-01-16T19:35:54+00:00 Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent Kirscher, Uwe Mitchell, Ross N. Liu, Yebo Nordsvan, Adam R. Cox, Grant M. Pisarevsky, Sergei A. Wang, Chong Wu, Lei Murphy, J. Brendan Li, Zheng-Xiang Department of Geosciences and Geography 2021-03-15T11:39:01Z 6 application/pdf http://hdl.handle.net/10138/328009 eng eng Geological Society of America 10.1130/G47823.1 Funding was provided by an Australian Research Council Laureate Fellowship grant to Z.-X. Li, Curtin University (FL150100133); a Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences, grant (IGGCAS-201905), and National Natural Science Foundation of China grants (41890833 and 41888101) to Mitchell; a Ministry of Science and High Education of the Russian Federation grant (075-15-2019-1883) to Pisarevsky; and Future Energy Systems (FES) funds at the University of Alberta, Canada, to L. Wu. Access to the cores was provided by the Northern Territory Geological Survey and the Darwin Core Library (Australia). This is a contribution to the International Geoscience Programme 648 and is contribution 1526 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au).We thank Dennis Brown for handling the manuscript and Alan Collins, Phil McCausland, and one anonymous reviewer for impartial and constructive reviews. Kirscher , U , Mitchell , R N , Liu , Y , Nordsvan , A R , Cox , G M , Pisarevsky , S A , Wang , C , Wu , L , Murphy , J B & Li , Z-X 2021 , ' Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent ' , Geology , vol. 49 , no. 2 , pp. 174-179 . https://doi.org/10.1130/G47823.1 85099181789 2b082c68-31be-4fb1-93e3-cca9d8f9d0a7 http://hdl.handle.net/10138/328009 000613644100012 cc_by openAccess info:eu-repo/semantics/openAccess 1171 Geosciences Article publishedVersion 2021 ftunivhelsihelda 2023-12-14T00:08:29Z The Australia-Laurentia connection in the Paleoproterozoic to Mesoproterozoic supercontinent Nuna is thought to have initiated by ca. 1.6 Ga when both continents were locked in a proto-SWEAT (southwestern U.S.–East Antarctic) configuration. However, the longevity of that configuration is poorly constrained. Here, we present a new high-quality paleomagnetic pole from the ca. 1.3 Ga Derim Derim sills of northern Australia that suggests Australia and Laurentia were in the same configuration at that time. This new paleopole also supports a connection between Australia and North China and, in conjunction with previously reported data from all continents, indicates that the breakup of Nuna largely occurred between ca. 1.3 and 1.2 Ga. The Australia-Laurentia connection in the Paleoproterozoic to Mesoproterozoic supercontinent Nuna is thought to have initiated by ca. 1.6 Ga when both continents were locked in a proto-SWEAT (southwestern U.S.-East Antarctic) configuration. However, the longevity of that configuration is poorly constrained. Here, we present a new high-quality paleomagnetic pole from the ca. 1.3 Ga Derim Derim sills of northern Australia that suggests Australia and Laurentia were in the same configuration at that time. This new paleopole also supports a connection between Australia and North China and, in conjunction with previously reported data from all continents, indicates that the breakup of Nuna largely occurred between ca. 1.3 and 1.2 Ga. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic HELDA – University of Helsinki Open Repository Antarctic Geology 49 2 174 179 |
| spellingShingle | 1171 Geosciences Kirscher, Uwe Mitchell, Ross N. Liu, Yebo Nordsvan, Adam R. Cox, Grant M. Pisarevsky, Sergei A. Wang, Chong Wu, Lei Murphy, J. Brendan Li, Zheng-Xiang Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title | Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title_full | Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title_fullStr | Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title_full_unstemmed | Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title_short | Paleomagnetic constraints on the duration of the Australia-Laurentia connection in the core of the Nuna supercontinent |
| title_sort | paleomagnetic constraints on the duration of the australia-laurentia connection in the core of the nuna supercontinent |
| topic | 1171 Geosciences |
| topic_facet | 1171 Geosciences |
| url | http://hdl.handle.net/10138/328009 |