新疆伊犁晚古生代裂谷陆相火山岩型铜(银)矿的成矿规律及其找矿前景——以阿吾拉勒地区为例

Metallogenic regularities and exploration outlook in later paleozoic period lift continental volcanic type copper(silver) deposit in Yili,Xinjiang

伊犁晚古生代裂谷陆相火山岩型铜银矿产于碱性火山岩中,在区域上表现出层控特点,即沿着上、下二叠统过渡界面分布,且多产于火山旋回顶部层位,明显受火山穹隆、火山洼地和火山机构及其派生构造的控制。具有准斑岩型、火山沉积型、火山热液型配套的矿床类型。多以火山构造为成矿基础而构成铜银成矿集中区。其中,托斯巴火山穹隆区、阿克吐别克火山向斜区和特提达坂火山穹隆区的多矿点火山构造类型区具有最佳的找矿前景。

The Later Paleozoic lift continental volcanic type copper-silver mineral resources occur in alkali volcanoes showing stratabound characteristics regionally, namely distributing along the transitional boundary between Upper and Lower Permian Period and mostly occurring in the top layer of volcanic cycle, obviously controlled by volcanic dome, volcanic depression and volcanic mechanism and its induced structures. There are para - porphyry type, volcanic deposition type, volcanic hydrothermal type series deposits. Copper and silver ore accumulation zones were usually formed on the base of volcanic structure. Among these zones, the volcanic structure type zones with several ore spots in Tuosiba volcanic dome, Aketubieke volcanic syncline zone and Tetidaban volcanic dome are promising for exploration.