The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia
The Qinling-Dabie orogenic collage, central China, constitutes the geographic, geologic, and cultural heart of China; it plays a key role in understanding the amalgamation and breakup of the Rodinia supercontinent and the subduction and exhumation of continental crust under ultrahigh-pressure condit...
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American Geophysical Union
2013
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Online Access: | https://edoc.unibas.ch/81560/ https://doi.org/10.1002/tect.20024 |
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ftunivbasel:oai:edoc.unibas.ch:81560 2023-05-15T14:04:34+02:00 The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia Bader, Thomas Ratschbacher, Lothar Franz, Leander Yang, Zhao Hofmann, Mandy Linnemann, Ulf Yuan, Honglin 2013 https://edoc.unibas.ch/81560/ https://doi.org/10.1002/tect.20024 unknown American Geophysical Union Bader, Thomas and Ratschbacher, Lothar and Franz, Leander and Yang, Zhao and Hofmann, Mandy and Linnemann, Ulf and Yuan, Honglin. (2013) The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia. Tectonics, 32 (3). pp. 661-687. doi:10.1002/tect.20024 info:isi/000322124300021 urn:ISSN:0278-7407 urn:ISSN:1944-9194 info:eu-repo/semantics/closedAccess Article PeerReviewed 2013 ftunivbasel https://doi.org/10.1002/tect.20024 2023-03-05T07:27:29Z The Qinling-Dabie orogenic collage, central China, constitutes the geographic, geologic, and cultural heart of China; it plays a key role in understanding the amalgamation and breakup of the Rodinia supercontinent and the subduction and exhumation of continental crust under ultrahigh-pressure conditions. Herein, we investigate the Proterozoic evolution of the Qinling-Dabie orogenic collage and surrounding segments of the bounding South China craton (SCC) and North China craton (NCC), employing published and new U/Th-Pb geochronology. The Kongling, Hong`an-Dabie, and Douling-Foping complexes constitute the nucleus of the Yangtze block, recording a common similar to 2.0Ga orogenic event that integrated the Yangtze block into the supercontinent Columbia. The similar to 1.10-0.95Ga Miaowan ophiolite-Shennongjia arc association of the Huangling dome-Shennongjia massif seems to have split and reassembled that nucleus. It formed earlier than or contemporaneously with the Sibao orogeny along the southeastern margin of the Yangtze block. The similar to 0.95-0.80Ga Mian-Lue complex comprises an oceanic accretionary wedge that formed outboard of an associated fore-arc-arc system represented by the Bikou-Hannan-Micangshan massifs along the north(western) margin of the Yangtze block. The Qinling complex, currently sandwiched between the SCC and NCC, lacks pre-Mesoproterozoic cratonal basement, and its igneous rocks intruded a similar to 1.7-1.0Ga old clastic wedge that incorporates meta-basites; it might have been part of the extended passive margin of East Antarctica and/or Australia. Neoproterozoic Qinling-complex magmatism spanned similar to 260 Myr and evolved from partial melting of the thick clastic sequence over an arc to a rift setting; most Qinling-complex paragneisses are erosional products of these igneous rocks. The similar to 1.0-0.85Ga Qinling-complex magmatism formed independently from that along the north(west)ern Yangtze-block margin, but its similar to 0.8-0.7Ga magmatism, peaking at similar to 750Ma, is ... Article in Journal/Newspaper Antarc* Antarctica East Antarctica University of Basel: edoc East Antarctica Tectonics 32 3 661 687 |
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University of Basel: edoc |
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ftunivbasel |
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unknown |
description |
The Qinling-Dabie orogenic collage, central China, constitutes the geographic, geologic, and cultural heart of China; it plays a key role in understanding the amalgamation and breakup of the Rodinia supercontinent and the subduction and exhumation of continental crust under ultrahigh-pressure conditions. Herein, we investigate the Proterozoic evolution of the Qinling-Dabie orogenic collage and surrounding segments of the bounding South China craton (SCC) and North China craton (NCC), employing published and new U/Th-Pb geochronology. The Kongling, Hong`an-Dabie, and Douling-Foping complexes constitute the nucleus of the Yangtze block, recording a common similar to 2.0Ga orogenic event that integrated the Yangtze block into the supercontinent Columbia. The similar to 1.10-0.95Ga Miaowan ophiolite-Shennongjia arc association of the Huangling dome-Shennongjia massif seems to have split and reassembled that nucleus. It formed earlier than or contemporaneously with the Sibao orogeny along the southeastern margin of the Yangtze block. The similar to 0.95-0.80Ga Mian-Lue complex comprises an oceanic accretionary wedge that formed outboard of an associated fore-arc-arc system represented by the Bikou-Hannan-Micangshan massifs along the north(western) margin of the Yangtze block. The Qinling complex, currently sandwiched between the SCC and NCC, lacks pre-Mesoproterozoic cratonal basement, and its igneous rocks intruded a similar to 1.7-1.0Ga old clastic wedge that incorporates meta-basites; it might have been part of the extended passive margin of East Antarctica and/or Australia. Neoproterozoic Qinling-complex magmatism spanned similar to 260 Myr and evolved from partial melting of the thick clastic sequence over an arc to a rift setting; most Qinling-complex paragneisses are erosional products of these igneous rocks. The similar to 1.0-0.85Ga Qinling-complex magmatism formed independently from that along the north(west)ern Yangtze-block margin, but its similar to 0.8-0.7Ga magmatism, peaking at similar to 750Ma, is ... |
format |
Article in Journal/Newspaper |
author |
Bader, Thomas Ratschbacher, Lothar Franz, Leander Yang, Zhao Hofmann, Mandy Linnemann, Ulf Yuan, Honglin |
spellingShingle |
Bader, Thomas Ratschbacher, Lothar Franz, Leander Yang, Zhao Hofmann, Mandy Linnemann, Ulf Yuan, Honglin The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
author_facet |
Bader, Thomas Ratschbacher, Lothar Franz, Leander Yang, Zhao Hofmann, Mandy Linnemann, Ulf Yuan, Honglin |
author_sort |
Bader, Thomas |
title |
The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
title_short |
The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
title_full |
The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
title_fullStr |
The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
title_full_unstemmed |
The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia |
title_sort |
heart of china revisited, i. proterozoic tectonics of the qin mountains in the core of supercontinent rodinia |
publisher |
American Geophysical Union |
publishDate |
2013 |
url |
https://edoc.unibas.ch/81560/ https://doi.org/10.1002/tect.20024 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
Bader, Thomas and Ratschbacher, Lothar and Franz, Leander and Yang, Zhao and Hofmann, Mandy and Linnemann, Ulf and Yuan, Honglin. (2013) The heart of China revisited, I. Proterozoic tectonics of the Qin mountains in the core of supercontinent Rodinia. Tectonics, 32 (3). pp. 661-687. doi:10.1002/tect.20024 info:isi/000322124300021 urn:ISSN:0278-7407 urn:ISSN:1944-9194 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/tect.20024 |
container_title |
Tectonics |
container_volume |
32 |
container_issue |
3 |
container_start_page |
661 |
op_container_end_page |
687 |
_version_ |
1766275764498464768 |