新疆阿勒泰地区及其邻近地段构造控煤特征

Tectonic control of coal-bearing formations in Altay region and its adjacent areas,Xinjiang

新疆阿勒泰地区煤炭资源匮乏,研究区内含煤特征意义重大。笔者以区域地质、矿产地质(煤)为基础,结合物探等资料,对阿勒泰地区及其邻近地段范围内所涉及的各大板块及其板内二级构造单元煤系赋存的可能性、不同时代煤系赋存特征及断裂构造对含煤区控制等进行了概略研究。认为斯特巴汗大断裂(2号)以北地区无煤系赋存,论述了2号大断裂以南各构造单元内石炭纪、二叠纪、侏罗纪含煤区的分布范围、赋煤规律及其进一步找矿和勘探的展望。

Coal resources are lacking in Altay region,and hence the study of coal-bearing characteristics in this area is of great significance.On the basis of regional geology and mineral（mainly coal） geology as well as geophysical data available,the authors made a comprehensive study of the probability of the existence of coalbearing formations,the occurrence characteristics of coal-bearing formations of different epochs,the fault structures that control the coal-bearing areas in the tectonic plates and Grade 2 tectonic units within Altay region and its adjacent areas of Xinjiang.It is concluded that there exist no coal-bearing formations in areas north of Sitebahan（No.2） large fault.This paper also makes a preliminary discussion on the distribution and occurrence characteristics of Carboniferous,Permian and Jurassic coal-bearing areas in the tectonic units south of No.2 large fault and,what is more,provides targets for coal prospecting in the study area.