内蒙古达来敖包铜钼矿构造控矿及控矿模式研究

发布时间：2018-02-02 12:01

本文关键词： 达来敖包铜钼矿热液型矿床构造控矿矿床模型　出处：《中国地质大学(北京)》2015年硕士论文　论文类型：学位论文

【摘要】：本文以达来敖包铜钼矿研究区矿体的控矿构造特征为研究对象,详细论述了研究区的构造基本格局、控矿构造特征和深部找矿等问题,提出了研究区的构造控矿模型,同时对研究区的成矿物质来源和找矿标志也进行了总结和归纳。研究区以往地质找矿方法均是对地表出露的石英脉型金铅锌矿体进行浅部的控制和揭露,对深部潜在的铜钼斑岩型矿体认识和研究不足,勘查找矿效率较低。本次论文研究工作借助前期取得的地质资料,通过野外调研工作,对深部斑岩体构造控矿特征及模式进行初步研究和讨论以期为该区今后的深部找矿工作提出一种行之有效的找矿模式及方法。论文以地质测量新方法等现代找矿理论为指导思想,通过野外调研工作,进行了研究区浅部矿体的控矿构造特征及深部隐伏矿体构造控矿模式的分析,主要取得如下认识及成果:北东向、南北向断裂是研究区内主要的控矿断裂,正是由于断裂裂隙的发育规模、断裂构造的内部结构、含矿热液的性质以及运移条件等方面的差异,导致了矿化分布的不均匀性,出现了矿化分段富集现象。充填在北东向、南北向断裂中的褐铁矿化石英脉是直接的找矿标志。通过研究认为达来敖包矿床具有典型的斑岩型矿床矿化特征,研究区矿化体呈现较为复杂的上下两种矿化形态,浅部矿体受断裂构造控矿特征明显,深部断裂构造控制细粒二长花岗岩的产出,为成矿斑岩体,也是成矿母岩。研究认为,对铜钼斑岩型矿体的勘查工作,实质上是对研究区内进行深部找矿问题的提出,深信结合物探异常及构造控矿、矿床模型的论述分析,在矿(化)体膨大部位、交汇部位开展深部找矿是值得探索的找矿途径。研究这一地区的控矿构造特征及构造控矿模式对于该区地质找矿工作具有重要指导意义,论文提出的控矿模式及认识和成果对于邻区地质勘查工作同样具有一定参考价值。
[Abstract]:In this paper, the ore-controlling structure characteristics of orebody in the study area of Dalaiaobao copper-molybdenum deposit are taken as the research object, and the structural basic pattern, ore-controlling structural characteristics and deep ore-prospecting in the study area are discussed in detail. A structural ore-controlling model for the study area is proposed. At the same time, the source of ore-forming materials and the ore-prospecting markers in the study area are summarized and summarized. The previous geological prospecting methods in the study area are shallow control and exposure of the quartz vein type gold, lead-zinc orebodies exposed on the surface. The deep potential copper-molybdenum porphyry orebodies are not well understood and studied, and the exploration and prospecting efficiency is relatively low. In this paper, with the help of the geological data obtained in the previous period, the field investigation work is carried out. This paper makes a preliminary study and discussion on the structural ore-controlling characteristics and models of deep porphyry in order to put forward an effective prospecting model and method for the future deep prospecting in this area. Theory is the guiding ideology. Through field investigation, the ore-controlling structure characteristics of shallow orebody and the ore-controlling model of deep concealed orebody are analyzed. The main results are as follows: NNE. The north-south fault is the main ore-controlling fault in the study area. It is due to the development scale of the fracture, the internal structure of the fault structure, the properties of ore-bearing hydrothermal solution and the migration conditions and so on. It leads to the inhomogeneity of mineralization distribution and the phenomenon of mineralization enrichment. The fossil Yingmai of limonite in the south-north fault is a direct ore prospecting marker. It is considered that the Dalaiaobo deposit has typical porphyry mineralization characteristics. The orebodies in the study area show two complex mineralization patterns, the shallow orebodies are obviously controlled by fault structure, and the deep fault structures control the occurrence of fine-grained monzonitic granites, which are ore-forming porphyry bodies. It is believed that the exploration of copper-molybdenum porphyry orebodies is in essence a matter of deep prospecting in the study area, and it is believed to combine geophysical anomalies with structural ore-control. The ore deposit model is discussed and analyzed in the expanding position of the ore body. It is worth exploring the deep prospecting way in the intersection position. It is important to study the ore-controlling structure characteristics and structural ore-controlling model for the geological prospecting work in this area. The ore-controlling model proposed in this paper has some reference value for the geological exploration in adjacent areas.
【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】：P618.41;P618.65

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