辽宁凤城市鸡冠山地区多金属矿成矿规律与成矿预测

发布时间：2018-04-05 11:26

本文选题：鸡冠山　切入点：成矿规律　出处：《辽宁工程技术大学》2015年硕士论文

【摘要】：辽宁凤城市鸡冠山地区地处辽东-吉南成矿带中部,大地构造单元位于中朝准地台(I级)胶辽台隆(II级)营口—宽甸台拱(III级)凤城凸起(IV级)。鸡冠山地区的主体位于辽东大裂谷内,辽河群古元古界岩浆岩、变质岩系广泛发育。区内硼铁矿、铜铅锌矿、金矿等矿床丰富且成矿地质条件优越,本区赋矿地层主要为古元古代辽河群的里尔裕含硼铁岩组；赋含铅锌的高家峪岩组、大石桥岩组；赋含金铜铅锌的盖县碎屑岩组。滨太平洋断裂体系是区内明显的控矿构造标志,中生代北东向李家堡子断裂与中、上元古代北东向鸡冠山大断裂是区内成矿的重要构造标志。辽东大裂谷是在古元古代发育的克拉通裂谷并且控制着鸡冠山研究区内硼铁矿、铜铅锌矿和金矿等的分布。裂谷内分离优地槽内带和冒地槽外带的MZ分界线作为基底断裂带控制了区内铅锌矿的分布；区内多期多方式运动断层控制中生代断陷盆地和部分岩体、矿床的分布,成为形成金矿的重要构造标志。通过分析研究区的区域地质概况、区域构造演化过程而进行区内大地构造环境类型、构造演化过程、成矿机制和成矿规律研究。在研究总结区内硼铁矿、铜铅锌矿、金矿的成矿规律及成矿演化过程后结合地质矿产、地球物理、地球化学信息,以控矿因素、控矿标志作为研究对象,通过直接、间接找矿信息,建立了矿产资源综合信息找矿模型。最终圈定石庙—刘家河硼、铁多金属矿成矿远景区、汤沟—秋木庄铜铅锌多金属矿成矿远景区、四道沟—腰沟金银多金属矿成矿远景区,并对成矿远景区进行了评价。
[Abstract]:The Jiguanshan area of Fengcheng City, Liaoning Province is located in the middle of the Liaodong-Jinan metallogenic belt. The geotectonic unit is located in the Sino-Korean quasi platform I class) Jiaoliaotai uplift class II) Yingkou-Kuandian platform arch class III) Fengcheng uplift grade IV.The main body of Jiguanshan area is located in the large rift valley of eastern Liaoning. The paleoproterozoic magmatic rocks of Liaohe Group are widely developed in metamorphic rock series.Gaixian clastic formation with gold, copper, lead and zinc.The Liaodong Great rift is a craton rift developed in the Paleoproterozoic and controls the distribution of boron ore, copper-lead-zinc and gold deposits in the Jiguanshan study area.The distribution of lead-zinc ore in the rift is controlled by the MZ dividing line between the internal zone of the rift and the outer belt of the faulting belt, and the distribution of the Mesozoic faulted basins and part of the rock bodies is controlled by the multi-stage and multi-mode fault movement in the area, and the distribution of the deposits is controlled by the MZ dividing line of the inner zone and the outer belt of the faulting.It has become an important structural symbol for the formation of gold deposits.By analyzing the general situation of regional geology and the process of regional tectonic evolution, the types of tectonic environment, the process of tectonic evolution, the metallogenic mechanism and the metallogenic regularity in the study area are studied.After studying and summing up the metallogenic regularity and metallogenic evolution of boron ore, copper-lead-zinc ore and gold deposit, combining geological and mineral resources, geophysical and geochemical information, taking ore-controlling factors and ore-controlling marks as research objects, through direct,Finally, Shimiao-Liujiahe boron, iron polymetallic ore metallogenic area, Tanggou-Qiumuzhuang copper-lead-zinc polymetallic ore area and Sidaogou-yaogou gold-silver polymetallic ore metallogenic area are delineated, and the metallogenic prospect area is evaluated.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.2

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