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Re-Os Geochronology and Sulfur Isotopes of the Lyangar W-Mo Deposit: Implications for Permian Tectonic Setting in South Tianshan Orogen, Uzbekistan

Zhenju ZhouKey Laboratory of Paleomagnetism and Tectonic Reconstruct, Ministry of Natural Resources, Beijing 100081, ChinaZhengle ChenKey Laboratory of Paleomagnetism and Tectonic Reconstruct, Ministry of Natural Resources, Beijing 100081, ChinaBakhtiar NurtaevShukhrat ShukurovFengbin HanKey Laboratory of Paleomagnetism and Tectonic Reconstruct, Ministry of Natural Resources, Beijing 100081, ChinaZong-Xiu WangKey Laboratory of Paleomagnetism and Tectonic Reconstruct, Ministry of Natural Resources, Beijing 100081, ChinaWeifeng XiaoKey Laboratory of Paleomagnetism and Tectonic Reconstruct, Ministry of Natural Resources, Beijing 100081, ChinaXinqi YuSchool of the Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100029, China

2019en

ABI

Annotatsiya

The Lyangar W-Mo skarn deposit is located in the Nuratau area (western Uzbekistan), South Tianshan Orogen. The skarn system is distributed along the contact zone between the Aktau granitoid and the upper Paleozoic sedimentary rocks. Six molybdenite samples from the Lyangar deposit yielded a Middle Permian Re-Os isochron age of 268.0 ± 12.0 Ma (MSWD = 0.43) and a weighted mean age of 263.8 ± 1.5 Ma (MSWD = 0.22). Molybdenites have low Re contents (12.49 to 16.65 ppm), indicative of a continental crust-dominated source. The molybdenite δ34S values fall inside a narrow range (1.0 to 3.8‰; average 2.3‰), implying that the ore metals were likely derived from the granite intrusion. We concluded that the Lyangar W-Mo deposit was formed in a post-collisional setting caused by continental collision between the Tarim and Kazakhstan cratons.

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Identifikatorlar

DOI: 10.3390/min9090534

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