新疆巴里坤县八墙子一带金、铜成矿规律分析及找矿方向

Ore-Forming Law of Copper-Gold and Prospecting Direction in Baqiangzi Area,Balikun County,Xinjiang

研究区位于准噶尔成矿省巴尔鲁克山—三塘湖晚古生代、中生代Cu、A u成矿带东段,构造上属唐巴勒-卡拉麦里古生代复合沟弧带。出露地层主要为奥陶系中酸性火山岩、火山碎屑岩及正常碎屑岩组合,泥盆系陆源碎屑岩、火山岩及火山碎屑岩组合,及石炭系正常碎屑岩夹火山碎屑岩组合。研究区侵入岩主要形成于华力西晚期,表现为从基性到酸性演化的特征。区内断裂和褶皱构造发育,为成矿提供了空间。笔者主要是通过对巴里坤县八墙子一带A u、Cu等元素在各个地层单元、侵入岩及构造中的分布特征研究,结合区内已发现的金、铜矿床、矿(化)点及异常的分布特征,总结了研究区金、铜矿成矿规律及找矿方向,认为区内金、铜矿产的形成与大地构造环境、区域构造以及岩浆活动有直接的关系。

Study area is located in Jungger metallogenesis province,eastern of Baerluke-santanghu Paleozoic and Mesozoic Cu,Au metallogenesis belt.Tectonic belongs to Tangbale-Kalamaili Paleozoic fossa-arc belt.The stratum is mainly the combination of Ordovician intermediate-basic volcanic rocks,Volcanic clastic rocks,and normal clastic rocks.The Devonian is the combination of terrigenous deposit rocks,lava,and volcanic clastic rocks.While the Carboniferous is the normal clastic rocks and volcanic clastic r ocks.The intrusive rock in the study area was mainly formed in late Variscan,having a characteristic from basic to acid.The faults and folds are well developed,providing the space for deposits.Based on the distribution characteristic of Au-Cu minerals in various stratum units,we summarize the metallogenic law of Au-Cu mineral deposits,showing that the formation of Au-Cu mineral deposit is directly related to tectonics,regional structures,and magmatic activities.