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Tectonic setting and provenance of Early Cretaceous strata in the footwall of Main Central Thrust, Eastern Nepal: Implications for the archipelago palaeogeography of the Neo-Tethys

文献类型：期刊论文

作者Li, Rui5,6,7; Ao, Songjian5,6,7; Xiao, Wenjiao4,5,6,7; Windley, Brian F.1; Zhan, Mingguo3; Huang, Peng4,5,6; Bhandari, Saunak2
刊名GEOLOGICAL JOURNAL
出版日期2020-11-17
页码16
关键词detrital zircon eastern Nepal Himalaya Lower Cretaceous Nd isotope U– Pb and Hf isotopes
ISSN号0072-1050
DOI10.1002/gj.4035
英文摘要The Early Cretaceous palaeogeography prior to the India-Asia collision is still controversial. There are two end-member models - an integrated passive margin versus an archipelago. Here, we report zircon U-Pb ages, Hf, and whole-rock Nd isotopes of newly defined Cretaceous mica schists from the Main Central Thrust to constrain the Early Cretaceous palaeogeography of the Himalaya. The mica schists have Early Cretaceous zircons with epsilon(Hf)(t) values of -21.1 to -9.2. The mica schists are characterized by TDMC values of 1.8-2.5 Ga and whole-rock epsilon(Nd)(0) value of -24.0. These features imply that these zircons generated from partial melting of lower crust as a result of an extension in some older continental crust, which were transported and deposted to form the protolith of the Cretaceous mica schists. Age pattern comparisons indicate that the age populations of the Cretaceous mica schists are significantly distinct from those of other Cretaceous strata in the Himalaya. It is obvious that the protolith of the Cretaceous mica schists were formed in an independent terrane (Arun) in the Neo-Tethys with significant tectonic separations proventing any inputs from the Tibetan Himalaya, Greater Himalaya, or Indian Craton since 120 Ma. Combined with published U-Pb ages and other geological data, our data supports the archipelago palaeogeography with rifted terranes in the Neo-Tethys Ocean, shedding light on the multiple amalgamation events along the India-Asia collision zone.
WOS关键词HF ISOTOPE GEOCHEMISTRY ; LARGE IGNEOUS PROVINCE ; IN-SITU ANALYSIS ; ZIRCON U-PB ; DETRITAL GEOCHRONOLOGY ; NORTHERN MARGIN ; OROGENIC BELT ; COLLISION ; EVOLUTION ; HIMALAYA
资助项目Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDJ-SSW-SYS012] ; National Key Research and Development Program of China[2017YFC0601206] ; National Natural Science Foundation of China[41202150] ; National Natural Science Foundation of China[41472208] ; National Natural Science Foundation of China[41730210] ; National Natural Science Foundation of China[41822204] ; National Natural Science Foundation of China[41888101] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18020203]
WOS研究方向Geology
语种英语
WOS记录号WOS:000589913900001
出版者WILEY
资助机构Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/98716]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Xiao, Wenjiao
作者单位1.Univ Leicester, Dept Geol, Leicester, Leics, England
2.Govt Nepal, Dept Mines & Geol, Kathmandu, Nepal
3.Guangxi Bur Geol & Mineral Prospecting & Exploit, Nanning, Peoples R China
4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Li, Rui,Ao, Songjian,Xiao, Wenjiao,et al. Tectonic setting and provenance of Early Cretaceous strata in the footwall of Main Central Thrust, Eastern Nepal: Implications for the archipelago palaeogeography of the Neo-Tethys[J]. GEOLOGICAL JOURNAL,2020:16.
APA Li, Rui.,Ao, Songjian.,Xiao, Wenjiao.,Windley, Brian F..,Zhan, Mingguo.,...&Bhandari, Saunak.(2020).Tectonic setting and provenance of Early Cretaceous strata in the footwall of Main Central Thrust, Eastern Nepal: Implications for the archipelago palaeogeography of the Neo-Tethys.GEOLOGICAL JOURNAL,16.
MLA Li, Rui,et al."Tectonic setting and provenance of Early Cretaceous strata in the footwall of Main Central Thrust, Eastern Nepal: Implications for the archipelago palaeogeography of the Neo-Tethys".GEOLOGICAL JOURNAL (2020):16.

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来源：地质与地球物理研究所

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