YANG Jie-hua1, LIU Liang1*, LIU Jia2
(1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;
2. Jinxing Mining Corporation, Shaoyang 422000, China)
Abstract:Geology of Southern China is characterized by widespread development of Mesozoic granitoids, and a large number of granitoid-related multi-metal ore deposits (e.g., W, Sn, Mo, Bi, Cu, Pb and Zn) are intensively distributed in this region, constituting one of the world’s Large Granitic Magmatism and Mineralization Province (LGMMP). Over the past decade, intensive scientific research has identified the precision age framework for magmatic activity and metallogenic event. These data have confirmed that Jurassic granitoids were mainly formed during 152－165 Ma with peaks at ca.159 Ma, whereas their associated ore deposits were mainly formed during 150－160 Ma, with a peak of ca.156 Ma. For an individual mining district, granitoid emplacement and related hydrothermal mineralization are basically penecontemporaneous. Meanwhile, with the rapid development of technology for in situ analysis of mineral, researchers have acquired a good deal of information from the magmatic evolution processes of Mesozoic granitoids, and revealed huge differences in physicochemical conditions for granitic magma among different kinds of metal mineralization. Also, dominant controlling factors for migration and enrichment of ore-forming elements during the magmatic evolution have attracted much attention for researchers. In addition, researchers have attached importance to the relationship between crust-mantle interaction and petrogenesis of granitoids, rose that mantle-derived materials can participate in their magmatic evolution in different ways, and finally, discussed the relevance between the LGMMP and crust-mantle interaction. Based on these studies, we present some scientific questions that require further study on LGMMP of Southern China.
Keywords: Mesozoic granitoids; granitoid-related mineralization; South China; Progresses and prospects
E-mail: liuliang@vip.gyig.ac.cn
ACTA MINERALOGICA SINICA Vol. 37, No. 6, 2017, Page 791-800
