Structural graded ore-controlling rule and ore-controlling structural combination pattern of Daliangzi lead-zinc deposit in southwestern Sichuan
Bo Yang,
Runsheng Han,
Jianbiao Wu,
Zhixing Feng,
Tianzhu Ding,
Peng Wu,
Hongsheng Gong,
Lingjie Li,
Hang Yuan
Affiliations
Bo Yang
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Runsheng Han
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Jianbiao Wu
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Zhixing Feng
Western Mining Group Co., Ltd., Xining 810001, China
Tianzhu Ding
Western Mining Group Co., Ltd., Xining 810001, China
Peng Wu
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Hongsheng Gong
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Lingjie Li
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
Hang Yuan
Southwest Institute of Geological Survey, Non-ferrous Metal Minerals Geological Survey Center, Kunming University of Science and Technology, Kunming 650093, China
The Daliangzi lead-zinc deposit is located in the southwestern Sichuan ore concentration area in the southwestern margin of the Yangtze block, and the ore body′s occurrence obviously controlled by the structure.Aiming at the problem of unclear ore-controlling rules and combinations of ore-controlling structures, based on the theory and method of ore field geomechanics, through the identification of the mechanical properties of typical ore-controlling structures at different levels and the structural screening of different stages, the ore-controlling structures, assemblages and their formation mechanisms were clarified. The research shows that the metallogenic structural system is the late Indosinian NE structural belt.Under the NW-SE principal compressive stress, the resulting structures of different scales control the occurrence of the ore deposit, ore body and ore vein; At the same time, form various structural assemblages: strike-slip at the deposit scale is dominated by fault-fold tectonic assemblages, and orebody-scale assemblages are "multi-shaped", "in-shaped" and "black fractured zone" structural assemblages.This study provides an important basis for prospecting and exploration in the deep and peripheral parts of the deposit.
