气候变化领域集成服务门户(CCPortal): Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau

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DOI	10.1016/j.gsf.2023.101654
	Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau
	Zhang, Xinming; Zhao, Xu; Fu, Lebing; Li, Yanjun; Kamradt, Andreas; Santosh, M.; Xu, Chongwen; Huang, Xiaokun; Borg, Gregor; Wei, Junhao
发表日期	2023
ISSN	1674-9871
卷号	14 期号:6
英文摘要	The Eastern Kunlun Orogenic Belt (EKOB) in the Northern Tibet Plateau hosts a wide variety of metal deposits related to the Late Paleozoic to Mesozoic magmatism. In this study, we investigate the spatiotemporal distribution of the Late Paleozoic to Mesozoic granitic rocks and associated metal deposits in the EKOB and provide a comprehensive compilation of the geochronological, geochemical and isotopic data on these rocks. We compute regional zircon Hf isotope and crustal thickness maps from the data, based on which a comprehensive model is proposed involving subduction (ca. 270-240 Ma), continental collision (ca. 240-224 Ma), and post-collisional extension (ca. 224-200 Ma) for the Late Paleozoic to Mesozoic Paleo-Tethys evolution in the EKOB.Zircon Hf isotopic and crustal thickness mapping of Late Paleozoic to Mesozoic magmatic rocks was carried out to evaluate their spatio-temporal and genetic links with the regional metallogeny. The polymetallic Fe-skarn and porphyry Cu (Mo) deposits in the EKOB are located above the Moho uplift region, featuring a comparatively thin crust. Granites associated with porphyry Cu (Mo) and polymetallic Fe skarn mineralization are commonly characterized by high eHf(t) and younger TDMc values, whereas granite related to Cu-Mo-Sn skarn deposits exhibit more variable eHf(t) values, TDMc ages, and the crust thickness, which suggest that more crustal materials contributed to the formation of Cu-Mo-Sn skarn deposits than those for porphyry Cu (Mo) and polymetallic Fe skarn mineralization. In contrast, vein-type Au deposits are located primarily where the Moho surface displays a depression, i.e., where the continental crust is relatively thick. The magmatic rocks associated with Au mineralization are characterized by low eHf(t) and high TDMc values, representing reworked ancient crustal components, similar to those associated with porphyry Mo and epithermal Ag-Pb-Zn-(Au) deposits. Our study indicates that the emplacement of magmatic-hydrothermal deposits was controlled by the crustal structure and magma sources. & COPY; 2023 China University of Geosciences (Beijing) and Peking University. Published by Elsevier B.V. on behalf of China University of Geosciences (Beijing). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Hf-isotopic mapping Crustal thickness Metallogeny Tectonic evolution Crustal architecture Eastern Kunlun Orogenic Belt
英文关键词	ZIRCON U-PB; A-TYPE GRANITES; HF ISOTOPIC COMPOSITIONS; SAISHITANG CU DEPOSIT; GEOCHEMICAL CHARACTERISTICS; CHINA IMPLICATIONS; VOLCANIC-ROCKS; GOLD DEPOSITS; TRIASSIC GRANITOIDS; TECTONIC EVOLUTION
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001028790000001
来源期刊	GEOSCIENCE FRONTIERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283760
作者单位	China University of Geosciences - Wuhan; Martin Luther University Halle Wittenberg; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; China University of Geosciences - Beijing; University of Adelaide; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS
推荐引用方式 GB/T 7714	Zhang, Xinming,Zhao, Xu,Fu, Lebing,et al. Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau[J],2023,14(6).
APA	Zhang, Xinming.,Zhao, Xu.,Fu, Lebing.,Li, Yanjun.,Kamradt, Andreas.,...&Wei, Junhao.(2023).Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau.GEOSCIENCE FRONTIERS,14(6).
MLA	Zhang, Xinming,et al."Crustal architecture and metallogeny associated with the Paleo-Tethys evolution in the Eastern Kunlun Orogenic Belt, Northern Tibetan Plateau".GEOSCIENCE FRONTIERS 14.6(2023).