栾川钼铅锌矿集区不同类型矿床控矿构造型式

发布时间：2018-05-28 08:38

本文选题：控矿构造型式 + 栾川矿集区　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：栾川矿集区位于东秦岭,是拥有如南泥湖、上房等储量巨大的钼钨(铁)矿床的成矿区带。长期以来,栾川矿集区内的各类型矿床始终是学者们在矿床成矿理论与找矿勘探实践方面的研究热点。而矿集区内各类型矿床的控矿构造型式尚未能够得到完整的梳理。本文通过对前人各类研究资料的总结、整理,结合前人的大量图鉴和实地坑道内、钻探岩心的考察,在栾川矿集区内不同类型典型矿床地质特征研究的基础上,分析各个矿床的控矿构造型式,并梳理了各个不同控矿构造型式内的矿化特征。本文取得如下主要成果:(1)栾川矿集区典型矿床可以划分为斑岩-矽卡岩型钼钨(铁)多金属矿床、矽卡岩型硫多金属矿床、热液型铅锌银矿床三个类型。(2)栾川矿集区主要控矿构造型式可以归纳为:接触带控矿构造型式、褶皱控矿构造型式、断裂控矿构造型式、层间断裂控矿构造型式四个类型。(3)接触带控矿构造型式是南泥湖-三道庄、上房、东鱼库等矿床的主要控矿构造型式;褶皱控矿构造型式在骆驼山矿区内表现明显;断裂控矿构造型式是冷水北沟等热液型铅锌银矿床的主要控矿构造型式;层间断裂、层间裂隙控矿构造型式是西沟、银洞沟、百炉沟等矿床的主要控矿构造型式。(4)同类控矿构造型式在不同矿床、不同地段的矿化特征也具有明显的差异,如:南泥湖矿段、上房矿床内矿化以细脉-网脉状矿化为主;三道庄矿床则以浸染状矿化为主;东鱼库钼矿床兼而有之。在铅锌矿床控矿构造不同部位,矿石的结构构造具有明显的差异。(5)栾川矿集区内“两背夹一向”的区域性构造格局主要控制了区内不同类型矿床及控矿构造型式的空间分布。
[Abstract]:Luanchuan ore concentration area, located in the East Qinling Mountains, is a metallogenic belt with huge reserves of molybdenum and tungsten (iron) deposits such as Nannihu and Shangfang. For a long time, various types of deposits in Luanchuan ore concentration area have always been the research focus of scholars in ore deposit formation theory and prospecting and exploration practice. However, the ore-controlling structural patterns of various types of ore deposits in the ore concentration area have not been fully combed. In this paper, based on the summarization of all kinds of previous research data, combined with a large number of previous maps and field tunnel, drilling cores, on the basis of the study of geological characteristics of different types of typical deposits in Luanchuan Mine concentration area, the paper analyzes the geological characteristics of different types of typical deposits in Luanchuan Mine concentration area. The ore-controlling structural patterns of each deposit are analyzed, and the mineralization characteristics in different ore-controlling structural patterns are combed out. The main achievements of this paper are as follows: the typical deposits in Luanchuan ore concentration area can be divided into porphyry skarn type molybdenum tungsten (iron) polymetallic deposits and skarn type sulfur polymetallic deposits. The main ore-controlling structure types in Luanchuan ore concentration area can be concluded as follows: contact zone ore-controlling structure type, fold ore-controlling structure type, fault ore-controlling structure type. Four types of interlayer fault ore-controlling structure type. 3) the ore-controlling structure type of contact belt is the main ore-controlling structure type of Nannihu-Sandaozhuang, Shangfang and Dongyuku deposits, while the fold ore-controlling structure pattern is obvious in Luoyushan mine area. Fault ore-controlling structure type is the main ore-controlling structure type of cold-water Beigou isothermal type lead-zinc-silver deposit, interlayer fracture and interlayer fissure ore-controlling structure type is Xigou, Yindonggou, Yindonggou, The main ore-controlling tectonics of Baiyugou and other deposits. (4) the same type of ore-controlling structures have obvious differences in different ore deposits, such as: in the Nanjiehu section, the mineralization in Shangfang ore deposit is mainly vein-net mineralization; The Sandaozhuang deposit is dominated by disseminated mineralization, while the Dongyuku molybdenum deposit has both. In different parts of ore-controlling structure of lead-zinc deposit, the structural structure of ore is obviously different. 5) the regional tectonic pattern of "two back clipping" in Luanchuan ore concentration area mainly controls the spatial distribution of different types of deposits and ore-controlling structural patterns in the area.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.65;P618.4

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