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Article: Jiangnan Orogen in South China: developing from divergent double subduction

TitleJiangnan Orogen in South China: developing from divergent double subduction
Authors
KeywordsJiangnan Orogen
Divergent double subduction
Yangtze Block
Cathaysia Block
Collision
Neoproterozoic
Issue Date2015
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
Citation
Gondwana Research, 2015, v. 27 n. 3, p. 1173-1180 How to Cite?
AbstractThe Jiangnan Orogen is considered as a continent-continent collisional belt resulting from the closure of a Meso-Neoproterozoic ocean separating the southeastern margin of the Yangtze Block from the northwestern margin of the Cathaysia Block. Recent data indicate the existence of early Neoproterozoic (1000-825. Ma) volcanic arc assemblages on both sides of the orogen, suggesting that the ocean lithosphere between the Yangtze and Cathaysia blocks must have undergone divergent double-sided subduction during the period of 1000-825. Ma. The divergent double subduction eventually resulted in the closure of the ocean basin at ~. 825. Ma, leading to the soft collision of the Yangtze and Cathaysia blocks to form the Jiangnan Orogen, without involvement of continental deep subduction, high-grade metamorphism of continental crust and uplift/exhumation of high-grade metamorphic rocks. Shortly after the collision, the initial detachment of the ocean lithosphere from the overlying crust and sedimentary sections induced underplating of mantle magmas, triggering partial melting of accretionary-wedge strata to form some peraluminous (S-type) granites in the period 825-815. Ma. Finally, the sinking of the oceanic slab pulled down the overlying strata to form some basins in which the Banxi Group and its equivalent strata including bimodal volcanic rocks were formed in the period 815-750. Ma. © 2014 International Association for Gondwana Research.
Persistent Identifierhttp://hdl.handle.net/10722/210195
ISSN
2015 Impact Factor: 8.743
2015 SCImago Journal Rankings: 4.949

 

DC FieldValueLanguage
dc.contributor.authorZhao, G-
dc.date.accessioned2015-05-27T07:52:32Z-
dc.date.available2015-05-27T07:52:32Z-
dc.date.issued2015-
dc.identifier.citationGondwana Research, 2015, v. 27 n. 3, p. 1173-1180-
dc.identifier.issn1342-937X-
dc.identifier.urihttp://hdl.handle.net/10722/210195-
dc.description.abstractThe Jiangnan Orogen is considered as a continent-continent collisional belt resulting from the closure of a Meso-Neoproterozoic ocean separating the southeastern margin of the Yangtze Block from the northwestern margin of the Cathaysia Block. Recent data indicate the existence of early Neoproterozoic (1000-825. Ma) volcanic arc assemblages on both sides of the orogen, suggesting that the ocean lithosphere between the Yangtze and Cathaysia blocks must have undergone divergent double-sided subduction during the period of 1000-825. Ma. The divergent double subduction eventually resulted in the closure of the ocean basin at ~. 825. Ma, leading to the soft collision of the Yangtze and Cathaysia blocks to form the Jiangnan Orogen, without involvement of continental deep subduction, high-grade metamorphism of continental crust and uplift/exhumation of high-grade metamorphic rocks. Shortly after the collision, the initial detachment of the ocean lithosphere from the overlying crust and sedimentary sections induced underplating of mantle magmas, triggering partial melting of accretionary-wedge strata to form some peraluminous (S-type) granites in the period 825-815. Ma. Finally, the sinking of the oceanic slab pulled down the overlying strata to form some basins in which the Banxi Group and its equivalent strata including bimodal volcanic rocks were formed in the period 815-750. Ma. © 2014 International Association for Gondwana Research.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr-
dc.relation.ispartofGondwana Research-
dc.subjectJiangnan Orogen-
dc.subjectDivergent double subduction-
dc.subjectYangtze Block-
dc.subjectCathaysia Block-
dc.subjectCollision-
dc.subjectNeoproterozoic-
dc.titleJiangnan Orogen in South China: developing from divergent double subduction-
dc.typeArticle-
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hk-
dc.identifier.authorityZhao, G=rp00842-
dc.identifier.doi10.1016/j.gr.2014.09.004-
dc.identifier.scopuseid_2-s2.0-84925243944-
dc.identifier.hkuros250544-
dc.identifier.volume27-
dc.identifier.issue3-
dc.identifier.spage1173-
dc.identifier.epage1180-
dc.publisher.placeNetherlands-
dc.customcontrol.immutablesml 150527-

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