首页> 中文期刊> 《黄金》 >吉尔吉斯斯坦库鲁铜金矿床控矿构造及其成矿作用探讨

吉尔吉斯斯坦库鲁铜金矿床控矿构造及其成矿作用探讨

         

摘要

Kuru Copper-Gold Deposit is located on the Central Asia Gold Belt and is a typical skarn type copper-gold deposit.The formation of the deposit is related to the activities of Hercynian NE faults.The Carboniferous quartz diorite porphyrite invaded the limestone strata along NE direction,forming dome structure and other secondary struc-tures.Metasomatism with limestone occurred when magmatic fluids migrated along the contact zone and structures,and enrichment of ore bodies happened in the favorable spots.Research showed that there were 4 main ore bodies in circu-lar and discontinuous distribution discovered and the formation of them was controlled by intrusive contact structures, faults and folds.The mineralization stages of the deposit include skarn stage, quartz -sulfide stage and supergene stage,among which quartz-sulfide stage was the main mineralization stage,while the oxidized ores formed during su-pergene stage were also an important component of the deposit.%库鲁铜金矿床位于"中亚金腰带"上,是典型的矽卡岩型铜金矿床.矿床的形成与海西期北东向断裂活动相关,中石炭世石英闪长玢岩沿北东向侵入灰岩地层,形成穹窿构造及其他次级构造,岩浆热液在沿接触带及构造迁移过程中与灰岩发生了矿物交代作用,并在有利空间富集成矿.研究表明,已发现的4条主要矿体呈环状断续分布,矿体的形成受侵入接触构造和断裂、褶皱构造控制.该矿床的成矿作用经历了矽卡岩期、石英-硫化物期、表生期等3个阶段,其中石英-硫化物期是主成矿阶段,表生期所形成的氧化矿也是矿床的重要组成部分.

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