乌恰县萨瓦亚尔顿外围铅锌银多金属矿床成矿规律及成矿预测研究

发布时间：2018-04-10 14:23

本文选题：萨瓦亚尔顿 + 矿床地质特征　；参考：《新疆大学》2017年硕士论文

【摘要】：萨瓦亚尔顿外围铅锌银多金属矿大地构造隶属南天山造山带西缘,位于乌鲁克恰提~迈丹~库阿特晚古生代裂陷槽北缘的结合部位,是Au-Sb-Pb-Zn-Ag-REE-Mn-Fe-铝土矿成矿带上发现的中小型铅锌银多金属矿床之一。本文在综合分析研究萨瓦亚尔顿区域构造背景、成矿条件、地球物理及地球化学特征的基础上,结合野外地质分析,系统总结了矿床地质特征,通过其控矿因素、含矿建造及成矿机理等多方面分析和探讨,总结了该矿床的成矿规律及成矿模式,认为萨瓦亚尔顿外围铅锌银多金属矿床形成经历了三个阶段:(1)洋盆早期形成碳酸盐岩夹细碎屑岩组合建造;(2)后期经区域变质作用形成铅、锌、银等矿(化)体;(3)期后造山运动对铅、锌、银矿(化)体进行改造富集。通过地球化学多元统计分析,研究区内强烈富集Pb、Zn、Ag、Cu元素,Pb与Zn、Ag具有较强相关性,其相关系数分别为0.88、0.86,Zn-Cu-Pb、Ag-As-Hg元素组合异常表征铅锌银矿化,区内圈定了四个三级化探异常,初步认为该区Pb-Zn-Ag-Cu-Hg-Au多元素叠加异常为找矿有利地段,指出了进一步开展研究区地质找矿工作的方向,并对找矿远景进行了初步分析。
[Abstract]:The tectonics of the lead-zinc-silver polymetallic ore deposits in the periphery of Savayarton belong to the western margin of the South Tianshan orogenic belt and are located in the northern margin of the late Paleozoic rift trough in Urucchati-Maidan Kuat.It is found in Au-Sb-Pb-Zn-Ag-REE-Mn-Fe-bauxite metallogenic belt as one of the small and medium-sized lead-zinc-silver polymetallic deposits.Based on the comprehensive analysis and study of the regional tectonic background, metallogenic conditions, geophysical and geochemical characteristics of the Sawayarton area, combined with the field geological analysis, the geological characteristics of the deposit are systematically summarized, and the ore-controlling factors are used to control the ore deposits.The metallogenic regularity and metallogenic model of the deposit are summarized by analyzing and discussing the ore-bearing formation and metallogenic mechanism.It is considered that the formation of the lead-zinc-silver polymetallic deposit in the periphery of Sawayarton experienced three stages: 1) the formation of carbonate rock and fine clastic rock assemblages in the early stage of the oceanic basin was formed. (2) the late regional metamorphism resulted in the formation of lead and zinc.The post-orogenic movement enriched lead, zinc and silver ore bodies.By means of geochemical multivariate statistical analysis, there is a strong correlation between Pb and Zn-Ag in the strong enrichment of Pb and Zn Ag in the study area. The correlation coefficients are 0.88 ~ 0.86% Cu ~ (g-As-Hg) assemblage anomalies to characterize lead-zinc-silver mineralization, and four third-order geochemical anomalies have been delineated in the study area.It is preliminarily considered that the multi-element superposition anomaly of Pb-Zn-Ag-Cu-Hg-Au in this area is favorable for prospecting, and the direction of further geological prospecting in the study area is pointed out, and the prospect of prospecting is analyzed preliminarily.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.2

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