新疆巴伦台地区构造单元划分及特征

Abstract

新疆巴伦台地区位于西天山东段，东、西天山的交汇部位，地质构造复杂，前人将该地区划归巴伦台地块，本文通过项目三年来的野外调查依据板块构造学说划分大地构造单元的原则和构造亲缘关系，将新疆巴伦台地区首次划分为三个不同的III级构造单元。由北而南为：伊犁地块、乌兰莫仁构造强变形带、巴仑台地块。根据研究区具体地质特征，进一步将巴仑台地块划分出8个IV级构造单元，并且对各构造单元的地质特征进行阐述。IV级构造单元的划分，对了解区内古陆块的演化过程具有十分重要的意义。 Baluntai area as the western part of the West Tianshan, is located in East and West Tianshan intersection. It is considered as Baluntai block with complex geological structure. According to the principle of plate tectonics and the genetic relationship of tectonic units, Baluntai region is divided into three different tectonic units. From north to South: it includes the Yili block, the Wulunmoren strong tectonic deformation belt and the Baluntai block. On the basis of the specific geological characteristics of the study area, we further classify Baluntai block into eight IV grade structural units, and detailedly expound the geological characteristics of each tectonic unit. The classification of level IV structural units has great significance to understand the evolution process of ancient blocks in the area.