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Survived Seamount Reveals an in situ Origin for the Central Qiangtang Metamorphic Belt in the Tibetan Plateau
Liu, DL (Liu, Deliang)1,2; Shi, RD (Shi, Rendeng)2; Ding, L (Ding, Lin)2; Jiang, SY (Jiang, Shao-Yong)1
Source PublicationJOURNAL OF EARTH SCIENCE
2019
Volume30Issue:6Pages:1253-1265
DOI10.1007/s12583-019-1250-9
Abstract

The origin of the central Qiangtang metamorphic belt (CQMB) has long been in debate, which is not clear whether this belt is the exhumed Jinsha oceanic plate that had been subducted and underthrusted beneath the Qiangtang Block, or the in situ Longmu Co-Shuanghu suture that separated the south and north Qiangtang blocks. Here we report field observations, zircon U-Pb ages and Lu-Hf isotopes, as well as whole rock geochemistry and Sr-Nd isotopes of the Late Triassic volcanic rocks near the Chabo Co within the southern margin of the CQMB. The ca. 229 Ma Chabo Co volcanic rocks and limestones possess characteristic lithologies of a seamount. Their geochemical and isotopic compositions are similar to OIB-type lavas. Unlike other metabasalts (eclogites and blueschists) in the CQMB, the Chabo Co volcanic rocks are OIB-type lavas that did not experience high-grade metamorphism; this is likely because that the Chabo Co seamount was detached from the subducting Longmu Co-Shuanghu oceanic slab. This work provides new solid evidences for an in situ origin of the CQMB.

Subject AreaGeology
WOS IDWOS:000492368200001
Language英语
Indexed BySCI
KeywordPlasma-mass Spectrometry Hf Isotopic Compositions U-pb Northern Tibet Accretionary Complexes Crustal Xenoliths Melange Formation Paleo-tethys Costa-rica Subduction
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国内
ISSN1674-487X
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherCHINA UNIV GEOSCIENCES, WUHAN
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9116
Collection图书馆
Corresponding AuthorLiu, DL (Liu, Deliang); Jiang, SY (Jiang, Shao-Yong)
Affiliation1.China Univ Geosci, Sch Earth Resources, Collaborat Innovat Ctr Explorat Strateg Mineral R, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Liu, DL ,Shi, RD ,Ding, L ,et al. Survived Seamount Reveals an in situ Origin for the Central Qiangtang Metamorphic Belt in the Tibetan Plateau[J]. JOURNAL OF EARTH SCIENCE,2019,30(6):1253-1265.
APA Liu, DL ,Shi, RD ,Ding, L ,&Jiang, SY .(2019).Survived Seamount Reveals an in situ Origin for the Central Qiangtang Metamorphic Belt in the Tibetan Plateau.JOURNAL OF EARTH SCIENCE,30(6),1253-1265.
MLA Liu, DL ,et al."Survived Seamount Reveals an in situ Origin for the Central Qiangtang Metamorphic Belt in the Tibetan Plateau".JOURNAL OF EARTH SCIENCE 30.6(2019):1253-1265.
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