论文部分内容阅读
中生代以来，晋中南经历了多期构造应力场的作用：印支期，在华北板块南北边缘造山带的强烈挤压作用下，形成了近南北方向的水平挤压应力场；燕山期，在西太平洋古陆与亚洲大陆的碰撞、拼贴作用下，形成了北西西—南东东方向的水平挤压应力场；喜山早期，受印度板块与欧亚板块碰撞作用的影响，形成了北东—南西方向的水平挤压应力场。新第三纪以来，随着裂陷沉降作用和断陷盆地深部塑性物质上涌底辟作用的增强，晋中南构造应力场演化为以北西—南东方向近水平伸展应力场为主，并且伴随着太行山和霍山的不断隆起，在晋中南东部的沁水含煤向斜中形成了局部挤压应力场。
Since the Mesozoic, Jinzhongnan has undergone multiple tectono-tectonic stress fields. During the Indo-Chinese epoch, the horizontal compressive stress fields near the north and south direction were formed under the intense extrusion of the north and south margins of the North China Plate. In the Yanshan Period, The collision and collage of the Pacific paleocontinent with the Asian continent formed a horizontal compressive stress field in the northwestern-south-east-east direction. Due to the collision between the Indian plate and the Eurasian plate in the early Himalayan formation, Horizontal squeezing stress field in the southwest direction. Since the Neogene, the tectonic stress field in Jinzhongnan evolved into a near-horizontal extensional stress field in the northwest-south east direction with the increase of rifting and subsidence of plastic material in the deep fault basins, With the continuous uplift of the Taihang Mountains and Huoshan, a local compressive stress field was formed in the coal-bearing anticline of Qinshui in the eastern, central, southern part of Jinzhongnan.