minerals Communication Recognition of Late Triassic Cu-Mo Mineralization in the Northern Yidun Arc (S.E. Tibetan Plateau): Implications for Regional Exploration Zhen-Dong Tian 1,2, Cheng-Biao Leng 1,3,* , Xing-Chun Zhang 1, Li-Min Zhou 4 and Yan-Wen Tang 1 1 State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;
[email protected] (Z.-D.T.);
[email protected] (X.-C.Z.);
[email protected] (Y.-W.T.) 2 College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 3 State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China 4 National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, China;
[email protected] * Correspondence:
[email protected] or
[email protected]; Tel.: +86-1898-417-7223 Received: 29 October 2019; Accepted: 5 December 2019; Published: 10 December 2019 Abstract: The Yidun arc, located in the southeastern Tibetan Plateau, was formed by the westward subduction of the Ganze-Litang Paleo-Tethys ocean in Late Triassic. It is well-known for the formation of numerous Mesozoic porphyry-skarn Cu-Mo-(Au) deposits in the arc. To date, more than 20 Cu-Mo-(Au) deposits (>10 million tonnes Cu resources) have been discovered in the southern Eastern Yidun arc. However, few Cu-Mo deposits have been discovered in the northern Eastern Yidun arc. In recent years, some Cu-Mo deposits or occurrence are successively discovered in the northern Eastern Yidun arc, but their ore-forming ages are not well constrained.