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Birth and demise of the Bangong-Nujiang Tethyan Ocean: A review from the Gerze area of central Tibet
Li, S (Li, Shun)1,2; Yin, CQ (Yin, Changqing)1,2; Guilmette, C (Guilmette, Carl)3; Ding, L (Ding, Lin)4; Zhang, J (Zhang, Jian)1,2
Source PublicationEARTH-SCIENCE REVIEWS  
2019
Volume198Issue:0Pages:102907
DOI10.1016/j.earscirev.2019.102907
Abstract

Reconstructing the evolution of the Bangong-Nujiang Tethyan Ocean (BNTO) plays an indispensable role in understanding the linkage between Gondwana dispersion and Tibetan Plateau accretion. The existence of the BNTO is inferred from presence of dismembered ophiolite bodies along the Bangong-Nujiang suture zone, which separates Lhasa from Qiangtang. In this paper, we present a detailed synthesis of ophiolite, metamorphism, magmatism, lithostratigraphy and tectonism from the western segment (Gerze area) of the Lhasa-Qiangtang collision zone in order to reconstruct the Wilson cycle of the BNTO. Our results suggest that the BNTO initially opened in the Late Permian (similar to 260 Ma), as indicated by the earliest record of oceanic crust. Regionally, strong evidence supports a northward subduction of the BNTO beneath Qiangtang, likely initiating in the Early Jurassic (similar to 195 Ma). As suggested by detrital zircon age spectra from Mesozoic arc-sourced strata, northward oceanic subduction generated three episodes of arc magmatism, i.e., similar to 186-170 Ma, similar to 169-146 Ma and similar to 129-100 Ma along the southern Qiangtang margin, in which the Early Jurassic magmatism is only sporadically preserved in modern outcrops (Amdo area). Meanwhile, the recognition of an incomplete arc-trench system on the northern Lhasa margin supports a southward subduction beneath Lhasa as well. Our new provenance data from Lower Cretaceous strata on the northern Lhasa margin, together with available multi-disciplinary constraints, suggest that final closure of the BNTO did not occur until the latest Jurassic-Early Cretaceous (similar to 150-130 Ma). Therefore, the Wilson cycle of the BNTO is hereby reconstructed, providing significant insights into the amalgamation of the Tibetan Plateau.

Subject AreaGeosciences
WOS IDWOS:000498752600001
Language英语
Indexed BySCI
KeywordZircon U-pb Lhasa-qiangtang Collision India-asia Collision Group Volcanic-rocks Suture Zone Northern Tibet Tectonic Evolution Cretaceous Strata Basin Evolution Paleomagnetic Constraints
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国际
ISSN0012-8252
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherELSEVIER
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9101
Collection图书馆
Corresponding AuthorYin, CQ (Yin, Changqing)
Affiliation1.Sun Yat Sen Univ, Guangdong Prov Key Lab Mineral Resources & Geol, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China;
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China;
3.Univ Laval, Dept Geol & Genie Geol, Quebec City, PQ G1V 0A6, Canada;
4.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Li, S ,Yin, CQ ,Guilmette, C ,et al. Birth and demise of the Bangong-Nujiang Tethyan Ocean: A review from the Gerze area of central Tibet[J]. EARTH-SCIENCE REVIEWS  ,2019,198(0):102907.
APA Li, S ,Yin, CQ ,Guilmette, C ,Ding, L ,&Zhang, J .(2019).Birth and demise of the Bangong-Nujiang Tethyan Ocean: A review from the Gerze area of central Tibet.EARTH-SCIENCE REVIEWS  ,198(0),102907.
MLA Li, S ,et al."Birth and demise of the Bangong-Nujiang Tethyan Ocean: A review from the Gerze area of central Tibet".EARTH-SCIENCE REVIEWS   198.0(2019):102907.
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