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新疆北山裂谷构造带,呈北东东—北西西向展布,是在塔里木地块太古界、元古界的基础上开裂演化而成,总体呈两地块夹裂谷的构造格局,经历了∈、O-S、C-P三次大规模的裂开与闭合、由南向北迁移的演化模式。在该裂谷带晚古生代沉积盖层中分布着一系列不同类型的金矿(点),并划分了多个Au成矿亚带。本文所论为新疆北山晚古生代金(铜)Ⅴ级成矿带金矿的成矿规律。根据赋矿岩系划分为6类,矿石建造划分为四类,分别为石英脉型、破碎蚀变岩型、破碎蚀变岩型+石英脉型、中酸性岩浆热液型,以石英脉+破碎蚀变岩型为主。控矿因素为沉积建造(火山岩—碎屑岩及炭质岩系)、韧—脆性断裂、岩浆岩等;成矿时代为华力西晚期、印支期、燕山期和喜山期,成矿作用与各期构造活动同步或准同步。
The northern Beishan rift structural belt is distributed in the NE, NW, WX direction. It was developed on the basis of Archean and Proterozoic evolutions of the Tarim block. It is generally characterized by the tectonic framework of the rifted Rift Valley in the two blocks. ∈, OS, CP three large-scale fissures and closures, the migration from south to north evolution mode. A series of different types of gold deposits (spots) are distributed in the Late Palaeozoic sedimentary cover of the rift zone and are divided into several Au mineralization sub-zones. This paper discusses the metallogenic regularity of the Late Paleozoic gold (Cu) Ⅴ metallogenic belt in Beishan, Xinjiang. According to the ore-bearing rocks, the ore-forming rocks are divided into six types and the ore is divided into four types: quartz vein type, crustal alteration rock type, crustal altered rock type + quartz vein type, intermediate-acid magmatic hydrothermal type, quartz vein + Broken altered rock-based. The ore-controlling factors are sedimentary construction (volcanic-clastic and carbonaceous rock series), ductile-brittle fracture and magmatic rock. The metallogenetic age is Late Hurix, Indosinian, Yanshanian and Himalayan period. Synchronous or quasi-synchronous with the tectonic activities of each period.