Abstract

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Title:: Ore-contained Tectonic Styles and Ore Controlling Regularities of Sareke Cu Deposit in Wuqia Area of Xinjiang, China

Author(s):: WANG Lei; FANG Wei-xuan; LU Jia; LIU Zeng-ren; 1. China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China; 2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China

Keywords:: Cu deposit; tectonic system; structural petrography; ore-contained tectonic style; superimposed coupling; basin fluid; diabase; Xinjiang

Abstract:: Through the study on the tectonic petrographic profile of Sareke Cu deposit in Wuqia area of Xinjiang, it is considered that the complex synclinal structure in Sarekebayi is conducive to the large-scale accumulation and mineralization of the basin fluid, and it is affected by structure and basin fluid action, and the Sareke Cu deposit forms two ore belts in north and south. The ore-contained tectonic styles of the north ore belt are composed of fold community, bedding fault and interlayer connectivity complex fault-fracture zone, and it is characterized by strong asphaltization fluid intrusion in the later stage; the ore-contained tectonic styles of the south ore belt are composed of propagation fold, intrusion structure, trans-layer fault-fracture zone. Combined with the study on the lithological phase anatomy of typical boreholes and tunnels, the results show that the heterogeneous conglomerate of the central dryland fan subfacies in the second member of Upper Jurassic Kuzigongsu Formation is the initial enrichment lithology of mineral, and the ore body becomes thick in the location of knee-fold structure and diabase vein along the fault structure; the most dense tectonic stress zone in the trans-layer fault-fracture zone provides migration channels and storage space for hydrocarbon-rich reducing ore-forming fluids, and it is generally shown that Sareke Cu deposit has a characteristic of the superimposed coupling of structure and mineral fluid.