西天山北部地区铜、金等多金属成矿学研究及矿床定位预测

【作者】 王核；

【导师】 彭省临；

【作者基本信息】 中南大学 ， 矿产普查与勘探， 2001， 博士

【摘要】 论文拟以地洼学说理论做指导，从成矿学的角度对西天山北部地区的成矿大地构造背景及其演化、成矿控矿因素、成矿系列、成矿规律等进行了全方位的研究，并用“多因复成”成矿理论对喇嘛苏铜矿的成因进行分析，并进行矿床（体）定位预测的探索性研究。 通过研究，取得主要成果如下：（1）首次应用地洼成矿学理论重塑了西天山北部地区的大地构造演化史，认为大地构造演化经历了前地槽阶段、地槽阶段、地台阶段和地洼阶段，从而厘定了本区的大地构造性质为地洼区，并将大地构造单元详细划分为7个V级构造单元；（2）利用航磁数据处理进行深部构造分析，有效地探讨了深部构造特征和区域构造格局，推断出区域性基底断裂带，并认为四台断裂和博罗霍洛断裂两条深大断裂是区域上最重要的控矿断裂；（3）系统探讨了区域成矿的控制因素，总结了区域矿床类型和成矿系列，开展成矿规律与成矿预测研究，建立了区域成矿模式，探索由矿带选择—靶区预测—矿区评价的三级多源地学信息分析和矿床（体）定位预测方法；（4）系统地提出和论述了矿床（体）定位预测的思路与途径，提出喇嘛苏铜矿床为多因复成成因的新观点。对喇嘛苏矿床进行定位预测研究；（5）厘定了达巴特铜矿的火山机构，指出了铜矿与火山机构的关系，为进一步找矿提供了理论依据。更多还原

【Abstract】 Conducted by Diwa theory, the paper give a whole research to the metallogenetic geotectonic background and its evolution, ore-controlling factors, mineralization series, and mineralization regularities. The paper also analysis the genesis of lamasu copper ore deposit by olygenetic compound deposit?theory, and give a exploring research in prospecting for deposit.Through the research,, the paper gains some new knowledge and progenies on: (1) For the first time to apply the Diwa theory to re-model the geotectonic history of North-west Tianshan ,the process of formation evolution and development has involved Pre-gcosynclinal stage, Gcosynclinal stage,Platform stage and Diwa stage. The geotectonic character belong Diwa area, and seven geotectonic unites are divided to fifth grade. (2) Analysis the deep structure through the aeromagnetic data handling, discuss the deep structure and regional structure frame, deduce the regional basal fractures and consider that Sitai deep fracture and Boluholu deep fracture are the most important ore-controlling fracture. (3) Make a systematic discussion on ore-controlling factors, summing up the deposit types and mineralization series, researching the mineralization regularities and mineralization prospecting, erecting the regional metallogenetic model, found a method of deposit prospecting and three geologic information that constituting ore-belt selection, target prospect and ore area estimate. (4) Bring forward and dissertate the approach of deposit or ore body prospecting by the numbers, and points out a new view that the genesis of Lamasu copper deposit as a polygenetic compound deposit. Meanwhile, the paper gives prospecting research for Lamasu copper deposit. (5)Ascertaining the volcanic edifice of Dabate copper deposit, and point out the relation of copper deposit and volcanic edifice, it provide theory foundation for next prospecting.更多还原