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威宁小赛—耿家屯地区铅锌矿成矿规律及成矿预测
Pb-Zn Deposit Metallogenic Regularities and Metallogenic Prediction in the Areas of Xiaozai-Gengjiatun in Weiling County
【作者】 王东；
【作者基本信息】 贵州大学 ， 地质工程， 2009， 硕士
【摘要】 [中文摘要]威宁小赛-耿家屯地区位于“昭通—六盘水古生代燕山期铅、锌、铜、银、锰成矿带(Ⅲ28)”中的赫威水铅锌铜银成矿带(Ⅳ8)及黑石头—盘县铅锌银成矿带(Ⅳ9)两带上,铅锌矿点多,但中-大型矿床相对较少,研究区内工作程度较低,资金投入较少,没有开展系统的详细调查工作,近年来随着资源的需求及成矿理论的重新认识,以中国地质调查局为代表对区内铜铅锌矿进行了初步调查与综合研究；其中1992年至今,关于黔西北地区铅锌矿有很多论文发表,并从矿床地质特征及控矿因素和成矿规律进行分析。本文以国土资源大调查项目《贵州小赛-耿家屯地区矿产远景调查》为依托,通过系统收集有关地质矿产资料和1:5万地质测量成果,采用“点面结合、重点突破、以点代面的原则”,从地、物、化、探矿工程等方面对威宁小赛-耿家屯地区铅锌矿进行控矿地质因素研究、对各种成矿信息进行综合分析和矿化信息的提取,从铅锌矿地质特征及成矿元素分布规律、物探异常分布规律、地层控矿规律、构造控矿规律、火成岩与铅锌矿的关系、矿床空间分布、成矿时间演化规律等几方面对铅锌的成矿规律进行了探索,认为研究区内铅锌矿成矿具多期性,主要成矿期为海西期,次为燕山-喜山期(改造期)：并从大地构造条件控矿因素分析、区域构造控制分析、断陷盆地控矿分析、构造控矿分析、地层岩性控矿分析以及铅锌矿找矿标志分析,初步建立了研究区内铅锌矿的找矿模型。为打开区内寻找中大型站矿的新局面,为小赛-耿家屯地区寻找中大型铅锌矿矿提供理论基础。本次通过对铅锌矿成矿规律进行系统的分析研究,并结合前人的研究成果,将小赛-耿家屯地区进行了成矿预测,将研究区划分了六个找矿远景区及七个找矿靶区。
【Abstract】 Pb-Zn Deposit Metallogenic Regularities and Metallogenic Prediction in The Areas of Xiaozai-Gengjiatun in Weiling CountyAbstractThe areas of Xiaozai-Gengjiatun in Weiling County located in Hezhang-Weining-Shuicheng Pb, Zn, Cu and Ag metallogenic belt (Ⅳ8Ⅲ) and Heshitou-Panxian Pb, Zn, Cu and Ag metallogenic belt (Ⅳ9Ⅲ) of Zhaotong-Liupanshui Pb, Zn, Cu and Ag metallogenic belt (Ⅲ28) of Paleozoic Phase of Yanshan. But the middle-large deposits are relatively few, The research area Capital investment less and have not carried detailed investigation. In recent years, with resources needs and the metallogeny theory rediscove, the China geological survey carrieda preliminary investigation and study. Since 1992, Published many papers about northwestern guizhou Pb-Zn deposit geology characteristics, ore-controlling factors and metallogenic regularities.Based on the project which investigation of land and resources in Xiaozai-Gengjiatun areas of mineral vision investigation. Through collecting the data of geology and mineral resources and the related geological measurement results of 1/50,000. Using the principle of focal point of the entire area. We conducted ore-control factors of metallogenetic information research, analysis and mineralization information extraction for Xiaozai-Gengjiatun deposits in Weiling County. From Pb-Zn deposit geological characteristics, ore-forming elements distribution, geophysical anomalies distributions, ore-controlling structure, mine, igneous and relationships, ore deposits space distribution and metallogenic time evolution regularity of zinc in such aspects as the ore-forming regularity is explored. To believed there are many ore-forming period, the main ore-forming period of hercynian, and the yanshan-Himalayan(alter period) is secondary. And the tectonic conditions, the ore-controlling factors, regional tectonic control ore-controlling factors, fault basin ore-controlling factors, ore-controlling factors, lithological ore-controlling factors and lead-zinc deposit prospecting marks are analyzed, initially established a research area Pb-Zn deposit prospecting model.For offer a theoretical basis for middle-large deposits in Xiaozai-Gengjiatun deposits in Weiling County. Through the system researched, combining the deposits of metallogenic regularities of previous research achievements, We divided into six ore-hunting prospect areas and seven oreprospecting target areas.
【Key words】 Pb-Zn deposit； metallogenic regularities； prospecting model； metallogenic prediction； Xiaozai-Gengjiatun； Weining County；