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Article

U-Pb Detrital Zircon Ages and Geochemical Features of the Jingxing Formation, (Qamdo Basin, Tibet: Implications): Inferences for the Metallogenic Model of the East Tethys Evaporite

1
Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
2
Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Xining 810008, China
3
University of Chinese Academy of Sciences, Beijing 100049, China
4
China Non-Ferrous Metals Resource Geological Survey, Beijing 100012, China
*
Authors to whom correspondence should be addressed.
Minerals 2021, 11(7), 745; https://doi.org/10.3390/min11070745
Submission received: 22 May 2021 / Revised: 30 June 2021 / Accepted: 30 June 2021 / Published: 9 July 2021
(This article belongs to the Special Issue Mineralogy, Petrology and Geochemistry of Evaporites)

Abstract

Qamdo basin is located between the suture zone of Jinsha River (Ailao Mountains) and that of Ban Gong Lake (Nujiang) in the eastern Tethys. Part of the Jingxing Formation is deposited in the southwest of the basin. In this study, two profiles were investigated from the north and south of Qamdo basin. The characteristics of detrital zircon LA-ICP-MS U-Pb age, and the main and trace elements of sandstone were analyzed. The characteristics of major and trace elements showed that the tectonic setting of the study area is mainly composed of a relatively stable active continental margin and a passive continental margin, showing characteristics of a continental island arc. The weathering degree of Jingxing Formation in the Qamdo area is lower than that in the Lanping-Simao area, which may be closer to the origin. The age distribution characteristics of detrital zircon grains indicate that the Qiangtang Block, Youjiang basin, and Yangtze area jointly constitute the provenance of the Qamdo-Lanping-Simao basin. Both basins may be part of a large marine basin with unified water conservancy connection before evaporite deposition. Metamorphic seawater from the Qamdo basin may migrate to the Lanping-Simao basin and even the Khorat basin, where evaporite was deposited.
Keywords: Jingxing Formation; provenance; geochemistry; U-Pb detrital zircon age; Qamdo basin Jingxing Formation; provenance; geochemistry; U-Pb detrital zircon age; Qamdo basin

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MDPI and ACS Style

Han, W.; Ma, H.; Fang, W.; Cheng, H.; Li, Y.; Li, B.; Miao, W.; Hai, Q. U-Pb Detrital Zircon Ages and Geochemical Features of the Jingxing Formation, (Qamdo Basin, Tibet: Implications): Inferences for the Metallogenic Model of the East Tethys Evaporite. Minerals 2021, 11, 745. https://doi.org/10.3390/min11070745

AMA Style

Han W, Ma H, Fang W, Cheng H, Li Y, Li B, Miao W, Hai Q. U-Pb Detrital Zircon Ages and Geochemical Features of the Jingxing Formation, (Qamdo Basin, Tibet: Implications): Inferences for the Metallogenic Model of the East Tethys Evaporite. Minerals. 2021; 11(7):745. https://doi.org/10.3390/min11070745

Chicago/Turabian Style

Han, Wenhua, Haizhou Ma, Weixuan Fang, Huaide Cheng, Yongshou Li, Binkai Li, Weiliang Miao, and Qinyu Hai. 2021. "U-Pb Detrital Zircon Ages and Geochemical Features of the Jingxing Formation, (Qamdo Basin, Tibet: Implications): Inferences for the Metallogenic Model of the East Tethys Evaporite" Minerals 11, no. 7: 745. https://doi.org/10.3390/min11070745

APA Style

Han, W., Ma, H., Fang, W., Cheng, H., Li, Y., Li, B., Miao, W., & Hai, Q. (2021). U-Pb Detrital Zircon Ages and Geochemical Features of the Jingxing Formation, (Qamdo Basin, Tibet: Implications): Inferences for the Metallogenic Model of the East Tethys Evaporite. Minerals, 11(7), 745. https://doi.org/10.3390/min11070745

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