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Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys
Liu, WL; Xia, B; Zhong, Y; Cai, JX; Li, JF; Liu, HF; Cai, ZR; Sun, ZL; liuweil@mail.sysu.edu.cn; xiabin08@outlook.com
2014
Source PublicationINTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
Volume56Issue:4Pages:430-447
AbstractSubduction of the Bangong Meso-Tethys and collision between the Lhasa and Qiangtang blocks were important for the growth of Tibetan crust, as well as the development of super-large porphyry copper deposits in central Tibet. However, the initiation and closure timing, and nature and structure of the Bangong Meso-Tethys are still poorly constrained. Petrology, geochronology, and geochemistry of the Rebang Co and Julu ophiolites in the western part of the suture zone are used to constrain the tectonic history and structure of the Bangong Meso-Tethys. These two suites consist of ultramafic rocks, gabbro and diabase dikes, pillow basalts, and radiolarian cherts. Zircon U-Pb dating of zircon grains of gabbros yields well-defined weighted mean ages of 161.5 +/- 1.5 Ma and 103.8 +/- 3.9 Ma for the Rebang Co and Julu suites, respectively. Both of ophiolitic suites have mid-oceanic ridge basalt and island-arc tholeiite affinities, similar to back-arc basin crust. We suggest these suites formed above an intra-oceanic subduction zone at least during Middle Jurassic through mid-Cretaceous times. Along with coeval subduction beneath the southern Qiangtang margin, as well as fore-arc basin development, the Bangong Meso-Tethys has a complicated structure and history. Clearly, subduction in the Bangong Meso-Tethys was still active during mid-Cretaceous time and the Meso-Tethys did not close until Late Cretaceous time.
Department[Liu, Wei-Liang ; Xia, Bin ; Zhong, Yun ; Cai, Zhou-Rong] Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510275, Guangdong, Peoples R China ; [Liu, Wei-Liang ; Xia, Bin ; Zhong, Yun ; Cai, Zhou-Rong] Guangdong Univ, Key Lab Offshore Oil Explorat & Dev, Guangzhou, Guangdong, Peoples R China ; [Xia, Bin ; Li, Jian-Feng] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou, Guangdong, Peoples R China ; [Cai, Jian-Xin] Chinese Acad Sci, Key Lab Marginal Geol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China ; [Liu, Hong-Fei] Xizang Geol Survey, Lhasa, Peoples R China ; [Sun, Zhi-Lei] Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resources & Environm G, Minist Land & Resources, Qingdao, Peoples R China
KeywordTibet Bangong Meso-tethys Ophiolites Intra-oceanic Subduction Geochemistry Geochronology
Subject AreaGeology
Funding OrganizationNational Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701]
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Indexed Bysci
Funding Project海洋地质
Funding OrganizationNational Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] ; National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701]
WOS IDWOS:000330931500003
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10635
Collection中科院边缘海地质重点实验室
Corresponding Authorliuweil@mail.sysu.edu.cn; xiabin08@outlook.com
Recommended Citation
GB/T 7714
Liu, WL,Xia, B,Zhong, Y,et al. Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys[J]. INTERNATIONAL GEOLOGY REVIEW,2014,56(4):430-447.
APA Liu, WL.,Xia, B.,Zhong, Y.,Cai, JX.,Li, JF.,...&xiabin08@outlook.com.(2014).Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys.INTERNATIONAL GEOLOGY REVIEW,56(4),430-447.
MLA Liu, WL,et al."Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys".INTERNATIONAL GEOLOGY REVIEW 56.4(2014):430-447.
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