东天山重要成矿区带、成矿系统与成矿规律.

The metallogenic belt is a geological unit for possessing potential of ore resources. The metallogenic system mainly focuses on the overall characteristics of mineralization from the aspects of metallogenic elements and processes, including deposit assembly, metallogenic series and their original link. The metallogenic system is an important evidence for dividing metallogenic belt and summarizing metallogenic regularity. East Tianshan orogenic belt, which is sandwiched between Tuha Basin and Tarim block, may be divided into four metallogenic belts in terms of spatial distribution, including Dananhu-Tousuquan Cu-Au-polymetallic metallogenic belt, Kanggurtag-Huangshan Au-Cu-Ni metallogenic belt, Aqishan-Yamansu Fe-Cu-polymetallic metallogenic belt and Caixiashan-Jiyuan Pb-Zn-Ag-polymetallic metallogenic belt. The temporal evolution of East Tianshan orogenic belt is distinctly characterized by multi-stage and multiple metallogenic system, including ① Middle-Late Proterozoic extension continental margin, where there occurs a metallogenic system of sedimentation Pb-Zn-Ag deposits; ② Ordovician-Carboniferous active continental margin, where there occurs a metallogenic system of VMS Cu-Zn deposits and porphyry Cu deposits; ③ Carboniferous island arc, where there occurs a metallogenic system of volcanic Fe-Cu deposits; ④ Late Carboniferous-Early Permian post-collision orogeny and superimposition of mantle plume, where there occurs a metallogenic system of magmatic Cu-Ni deposits and a metallogenic system of Au deposits related to ductile shear processes. [ABSTRACT FROM AUTHOR]