摘要
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 era, Mid South Shanxi(MSS) Province was influenced by different tectonic stress fields(TSF). In MSS, the N S trending horizontal compressive TSF was formed under the strong orogenic compression in the south and north margins of the North China plate during Indosinian stage. During the Yanshan stage, the NWW SEE trending horizontal compressive TSF occurred in MSS by the collision of the West Pacific old land and the Asiancontinent. During the Early Himalayan stage, the NE SW trending horizontal compressive TSF was formed by the effect of the collision of India plate and Eurasian plate. Since the Neogene Period, TSF of MSS had been gradually subjected to the horizontal extension stress field through the increasing of the rift faulting and the escaping of plastic material under the depth of the fault basins. However, the partial compressive TSF occurred in the Qinshui coal bearing syncline as a result of the uplifting of Taihangshan and Huoshan Mountains.
出处
《地学前缘》
EI
CAS
CSCD
1998年第A08期152-161,共10页
Earth Science Frontiers
基金
国家自然科学基金
