Late Mesozoic Gold Mineralization in the North China Craton
The North China Craton (NCC) hosts numerous gold deposits and is known as the most gold-productive region in China.These deposits are generally sited in the cratonic margin.Main gold concentration districts include Jiaodong in the eastern margin, Xiaoqinling and Xiongershan in the southern margin, Jibei-Jidong, Chifeng-Chaoyang, Jinan, and Liaodong in the northern margin, and central Taihangshan in the central Craton.The gold deposits mostly formed within a few million years of the early Cretaceous (130-120 Ma), coeval with widespread occurrences of bimodal magmatism that marked the peak of lithospheric thinning or craton destruction of the NCC.Dehydration of the subducted and stagnant slab in the mantle transition zone has led to continuous hydration and considerable metasomatism of the mantle wedge beneath the NCC.The large-scale gold mineralization in the NCC in the early Cretaceous has genetic relation with craton destruction.The westward subduction of the west Pacific plate (Izanagi) beneath the eastern China continental margin during the Early Cretaceous has been an optimal setting for a large-scale gold mineralization throughout the NCC.
Gold mineralization Late mesozoic Craton destruction North China Craton
Hong-Rui Fan Mingguo Zhai Kui-Feng Yang Fang-Fang Hu
Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
国际会议
中国科学院地质与地球物理研究所2016年度(第16届)学术年会
北京
英文
330-330
2017-01-01（万方平台首次上网日期，不代表论文的发表时间）