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Deep Processes and Large-Scale Mineralization of the Yanshanian Movement (Vol.36, No.4) TEXT SIZE: A A A

SUN Wei-dong1,2,3, LI Cong-ying1, LING Ming-xing3,4, ZHANG Rong-qing5, ZHANG Liu-yi5, DING Xing3,4, ZHANG Zhe-kun5

1. Center of Deep Sea Research, Institute of Oceanography, Chinese Academy of Sciences, Qingdao 266071, China;
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;
3. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101, China;
4. State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
5. CAS Key Laboratory of Mineralogy and Metallogeny;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

Abstract: This project aims to reconstruct the drifting history of the Pacific plate and reveal the relationship between deep processes and large-scale magmatism/mineralization of Yanshanian movement. In detail, the research content of this project mainly includes:Trace the drifting history of the spreading ridge between the Pacific and the Izanagi plates; Study the controlling mechanism of ridge subduction on the magmatic activities and metallizations in the middle and lower regions of the Yangtze River belt during the Yanshanian period; Discuss the genesis of Yanshanian A-type granite in eastern China and its effect on rare metal mineralization; Identify the fragments of subducted Neo-Tethys and Pacific subduction plates inside the mantle based on seismic data; Reveal the deep processes of high-Mg adakite formation in typical areas in north China and discuss the constraints of paleo-Pacific subduction on the destruction of the North China Craton; Simulate the dissolution and migration processes of ore-forming elements related to fluids and melts, and reveal the chemical geodynamic mechanism behind the deep process of large-scale magmatism and mineralization in eastern China during the Yanshanian period.

Key words:Yanshanian movement ridge subduction magmatism mineralization adakite

E-Mail: weidongsun@qdio.ac.cn  

Bulletin of Mineralogy, Petrology and Geochemistry Vol.36, No.4, 2017, page 540-544

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