Advances in Earth Science ›› 2014, Vol. 29 ›› Issue (7): 795-809. doi: 10.11867/j.issn.1001-8166.2014.07.0795

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Metallogenic Belt and Some New Recognition

Yang Song( ), Juxing Tang, Xiaoming Qu, Denghong Wang, Hongbo Xin, Chao Yang, Bin Lin, Shufang Fan   

  1. MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,CAGS,Beijing 100037,China
  • Online:2014-07-10 Published:2014-07-10

Yang Song, Juxing Tang, Xiaoming Qu, Denghong Wang, Hongbo Xin, Chao Yang, Bin Lin, Shufang Fan. Metallogenic Belt and Some New Recognition[J]. Advances in Earth Science, 2014, 29(7): 795-809.

The traditional Bangongco-Nujiang metallogenic belt overlap with the ophiolitic melange units remained in the Bangongco-Nujiang ocean including the Cr, Au, Fe mineralization controlled with magma liquation. On the other hand, the broad metallogenic belt involved the deposits which had been recognized the products of subduction or postsubduction lithospheric extension in the northern and southern sides of Bangongco-Nujiang subduction zone, which includes the southern edge of the southern Qiangtang, suture zone, part of the North and Middle Gangdese block. The types of deposits include porphyry copper (gold) deposits, skarn iron (copper) deposits, hydrothermal-altered rock type of gold deposits and hydrothermal type of tungsten deposits throughout the evolution of Bangongco-Nujiang ocean. The copper mineralization has two episodes at about 120~105 Ma and 90~85 Ma, respectively. The early stage of copper mineralization (120~105 Ma) likely formes by remelting of previously subduction-modified arc lithosphere. Moreover, the late stage of copper mineralization (90~85 Ma) could be triggered by postcollisional lithospheric mantle delamination. Some of key fundamental scientific problems, such as Tectonic background (metallogenic environment), magmatism, metallogenic mechanism of typical deposits, the relationship between the preservation and plateau uplift, we need to pay attention to in the future work.

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