【作者】 王玉玺；

【导师】 王金荣；

【作者基本信息】 兰州大学 ， 构造地质学， 2010， 硕士

【摘要】 新疆博格达造山带东段,紧邻东准噶尔造山带。晚古生代准噶尔板块构造演化过程中经历了古陆缘、裂谷、裂谷闭合造山以及后造山伸展作用的复杂的构造动力学过程。这种复杂的构造动力学系统的转换有利于金属成矿作用,即控制矿源层、成矿流体迁移、矿体赋存的空间位置和矿床的规模和分布,以及不同成矿系列的形成等。通过综合地质信息,即对地表地质、化探、物探、以及岩石信息和构造背景等分析,系统研究了区域的成矿背景,并总结研究区的成矿地质条件和成矿规律。在研究区划分出一级成矿预测区三处,即西地铜矿(Ⅰ-1)、西地溯拉克(Ⅰ-2)、塔尔苏(Ⅰ-3)成矿预测区；二级成矿预测区两处：营盘盆克特Au、Cu预测区(Ⅱ-1)；伊齐萨依Au预测区(Ⅱ-2)；三级成矿预测区一处：萨热阔博-阔拉塑克断裂带Cu、Au预测区(Ⅲ-1)。发现并证实了巴斯克塔尔苏铜矿(化)点,西地溯拉克铜矿(化)点的分布范围、深部延伸及产出状态。同时发现了营盘盆克特花岗岩体南部的高极化率和低电阻率异常区,推测异常体可能与Cu (Au)硫化物有关。研究区多期的构造动力学系统的转换以及裂谷岩浆作用以及后期热液活动为Cu(Au)多金属成矿提供了成矿物质、成矿流体、成矿能量、成矿流体的输运通道以及堆积场地。中低温热液型(石英脉型)Cu、Au矿床是本区主要找矿方向,尤其塔尔苏地区的双峰式火山岩的成矿专属性,具有Cu多金属块状硫化物矿床以及与石英脉有关的Cu、Au矿床找矿前景,西地铜矿深部可能具有与基性-超基性杂岩体有关的Cu、Ni硫化物矿成矿潜力。更多还原

【Abstract】 Eastern section of Bogda orogenic belt is near the East Junggar orogenic belt. The Late Paleozoic plate tectonic evolution of the Junggar went through the ancient continental margin, rift, rift orogenic closure and post-orogenic evolution of the extension in the complex structural dynamics. Construction of this complex structure and dynamic systems which control the source of ore, the migration of ore-forming fluid, ore bodies of the spatial location and the size and distribution of deposits, and the formation of different ore-forming series, are conducive to the conversion of metal mineralization.The geological conditions of the study area and the mineralization laws were summarized in study area, through comprehensiving geological information, namely, analysising the surface geological, geochemical, geophysical, and tectonic setting of rocks and other information and the regional metallogenic background. The study area was ceded three first level potential areas:Xidi Copper (Ⅰ-1), Xidi-Shuolake (Ⅰ-2), Taersu (Ⅰ-3); two second level potential areas:Yingpanpenkete Au, Cu forecast area (Ⅱ-1); Yiqisayi forecast area by Au (Ⅱ-2); One third level potential areas:Sarekuobo-Kuolasuke Fault Cu, Au forecast area (Ⅲ-1). The distribution, deep extension and output state of copper points from Basike-Taersu copper and the Xidi-Shuolake Copper were discovered and confirmed. Also, the high polarizability and low resistivity anomalies what were suggested to associate with Cu (Au) sulfide, were found in southen of Yingpanpenkete granite basin.Construction of the study area more dynamic system of the conversion, post-rift magmatisms and hydrothermal activities provide ore mineralization, fluid inclusion, ore energy, from fluid transport channel and the accumulation of space to as Cu (Au) multi-metal ore mineralizaion. The Cu, Au ore deposits in epithermal (quartz vein type) are the main deposits in this area. In particular, the metallogenic specialization of bimodal volcanic rocks are from Taersu region, where there are deposits prospecting with Cu massive sulphide deposits as well as quartz veins related to the Cu, Au deposits.And there may be the Cu, Ni sulphide mineralization potential from basic-ultrabasic smashed rocks in the deep of Xidi Copper.更多还原