The cause for Nuna breakup in the Early to Middle Mesoproterozoic
The dynamic mechanism responsible for the breakup of Nuna supercontinent (1.6–1.3 Ga) is a key for understanding the early to middle Mesoproterozoic environment, life and mineralization on Earth. Although much research has been done to unravel the dispersion of young supercontinents (e.g., Pangea),...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/277938 2023-05-15T16:11:49+02:00 The cause for Nuna breakup in the Early to Middle Mesoproterozoic Huang, Zongying Yuan, Chao Long, Xiaoping Zhang, Yunying Ma, Xiaolong Soldner, Jeremie Du, Long Shu, Chutian 2022-11-02T03:21:49Z application/pdf http://hdl.handle.net/1885/277938 https://doi.org/10.1016/j.precamres.2021.106287 https://openresearch-repository.anu.edu.au/bitstream/1885/277938/3/The%20cause%20of%20Nuna%20breakup.pdf.jpg en_AU eng Elsevier 0301-9268 http://hdl.handle.net/1885/277938 doi:10.1016/j.precamres.2021.106287 https://openresearch-repository.anu.edu.au/bitstream/1885/277938/3/The%20cause%20of%20Nuna%20breakup.pdf.jpg © 2021 The authors Precambrian Research Nuna Breakup Subduction Plume Chinese Central Tianshan Block Mesoproterozoic Journal article 2022 ftanucanberra https://doi.org/10.1016/j.precamres.2021.106287 2022-11-07T23:15:26Z The dynamic mechanism responsible for the breakup of Nuna supercontinent (1.6–1.3 Ga) is a key for understanding the early to middle Mesoproterozoic environment, life and mineralization on Earth. Although much research has been done to unravel the dispersion of young supercontinents (e.g., Pangea), efforts by sorting out critical geological records to disclose the driving force for Nuna breakup are still rare. Here we focus on this issue by integrating new whole-rock geochemical data, zircon U–Pb ages, Hf-in-zircon and Nd isotopes for Mesoproterozoic granitoids in the Chinese Central Tianshan (CTB) at the Central Asian Orogenic Belt (CAOB). Moreover, global geological data in the early to middle Mesoproterozoic are compiled to place further constraints. The studied granitoids are I-type granites emplaced at ca. 1480–1450 Ma. They were formed in an active continental margin of CTB that once belonged to the Fennoscandia in the margin of Nuna. These results, together with the available geological records in CTB, CAOB and Fennoscandia, indicate a subduction system existed along the periphery of these domains in the early to middle Mesoproterozoic. This subduction system was temporally and spatially linked to the 1.6–1.3 Ga accretionary belts in the peripheral blocks of Nuna supercontinent, suggesting an encircling subduction system surrounding Nuna supercontinent. The encircling subduction system was accompanied by intermittent Mesoproterozoic plume magmatism, some of which were geochemically overprinted with subduction-related signatures, suggesting a dominant continuous circum-supercontinent subduction operating on the breakup of Nuna supercontinent. Moreover, these episodic plume-related magmatism are temporally and geodynamically linked to the exterior subduction surrounding the Nuna supercontinent. Our study therefore demonstrates that the development of an exterior subduction system gave rise to the breakup of Nuna supercontinent, which was accompanied by subordinate plume activities. This study is supported ... Article in Journal/Newspaper Fennoscandia Australian National University: ANU Digital Collections Precambrian Research 362 106287 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
English |
topic |
Nuna Breakup Subduction Plume Chinese Central Tianshan Block Mesoproterozoic |
spellingShingle |
Nuna Breakup Subduction Plume Chinese Central Tianshan Block Mesoproterozoic Huang, Zongying Yuan, Chao Long, Xiaoping Zhang, Yunying Ma, Xiaolong Soldner, Jeremie Du, Long Shu, Chutian The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
topic_facet |
Nuna Breakup Subduction Plume Chinese Central Tianshan Block Mesoproterozoic |
description |
The dynamic mechanism responsible for the breakup of Nuna supercontinent (1.6–1.3 Ga) is a key for understanding the early to middle Mesoproterozoic environment, life and mineralization on Earth. Although much research has been done to unravel the dispersion of young supercontinents (e.g., Pangea), efforts by sorting out critical geological records to disclose the driving force for Nuna breakup are still rare. Here we focus on this issue by integrating new whole-rock geochemical data, zircon U–Pb ages, Hf-in-zircon and Nd isotopes for Mesoproterozoic granitoids in the Chinese Central Tianshan (CTB) at the Central Asian Orogenic Belt (CAOB). Moreover, global geological data in the early to middle Mesoproterozoic are compiled to place further constraints. The studied granitoids are I-type granites emplaced at ca. 1480–1450 Ma. They were formed in an active continental margin of CTB that once belonged to the Fennoscandia in the margin of Nuna. These results, together with the available geological records in CTB, CAOB and Fennoscandia, indicate a subduction system existed along the periphery of these domains in the early to middle Mesoproterozoic. This subduction system was temporally and spatially linked to the 1.6–1.3 Ga accretionary belts in the peripheral blocks of Nuna supercontinent, suggesting an encircling subduction system surrounding Nuna supercontinent. The encircling subduction system was accompanied by intermittent Mesoproterozoic plume magmatism, some of which were geochemically overprinted with subduction-related signatures, suggesting a dominant continuous circum-supercontinent subduction operating on the breakup of Nuna supercontinent. Moreover, these episodic plume-related magmatism are temporally and geodynamically linked to the exterior subduction surrounding the Nuna supercontinent. Our study therefore demonstrates that the development of an exterior subduction system gave rise to the breakup of Nuna supercontinent, which was accompanied by subordinate plume activities. This study is supported ... |
format |
Article in Journal/Newspaper |
author |
Huang, Zongying Yuan, Chao Long, Xiaoping Zhang, Yunying Ma, Xiaolong Soldner, Jeremie Du, Long Shu, Chutian |
author_facet |
Huang, Zongying Yuan, Chao Long, Xiaoping Zhang, Yunying Ma, Xiaolong Soldner, Jeremie Du, Long Shu, Chutian |
author_sort |
Huang, Zongying |
title |
The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
title_short |
The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
title_full |
The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
title_fullStr |
The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
title_full_unstemmed |
The cause for Nuna breakup in the Early to Middle Mesoproterozoic |
title_sort |
cause for nuna breakup in the early to middle mesoproterozoic |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://hdl.handle.net/1885/277938 https://doi.org/10.1016/j.precamres.2021.106287 https://openresearch-repository.anu.edu.au/bitstream/1885/277938/3/The%20cause%20of%20Nuna%20breakup.pdf.jpg |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Precambrian Research |
op_relation |
0301-9268 http://hdl.handle.net/1885/277938 doi:10.1016/j.precamres.2021.106287 https://openresearch-repository.anu.edu.au/bitstream/1885/277938/3/The%20cause%20of%20Nuna%20breakup.pdf.jpg |
op_rights |
© 2021 The authors |
op_doi |
https://doi.org/10.1016/j.precamres.2021.106287 |
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Precambrian Research |
container_volume |
362 |
container_start_page |
106287 |
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1765997007941402624 |