中国含煤区地质背景与构造变形特征

The Geological Background and the Structural Deformation Feature of Coal Bearing Areas in China

在大量的煤田地质调查与专题研究基础上,结合区域地质背景分析,对中国5个含煤区聚煤过程的构造控制机理,构造变形特征进行了深入研究。结果表明,中国含煤区分布与中国大陆岩石圈基本格架相似,复杂而有序(规律性)的煤系构造变形受聚煤盆地基底属性、盆缘活动带构造演化历程控制。中国大陆中、新生代不同地球动力学体系的差异性演化是划分煤盆地东西向构造变形区的基础,印支期以前挤压构造作用形成了含煤区南北向构造变形分区,板块或陆块不同构造部位的变形差异形成了相应的变形环带。中国含煤区有3个变形区、7个变形分区、3个分区小区,以及若干个变形环带。

Based on a lot of coalfield geological survey and some special subjects study, with regional geological background analysis, the tectonic control mechanism in coal accumulating processes and the structure deformation feature of five coal bearing areas in China were studied. The results showed that the distribution of coal bearing areas in China is similar to the basal pattern of Chinese continental lithosphere, the complex and orderly （regular） deformation of coal formation is controlled by property of coal basin basement, and tectonic evolution course of the basin margin active zone. The basis of compartmentalizing E-W deformation areas is the otherness evolution of different geodynamics systems of Meso- Cenozoic Chinese continent. The N-S structure deformation subareas were formed by compressive tectonism before Indosinian period, and the relevant zones were caused by differential deformation in different tectonic position of plate or land block. Coal bearing area in China can be divided into three deformation regions, seven deformation subareas, three deformation plots and some deformable zone.