摘要
华蓥山断裂是分隔川东隔挡式褶皱带和川中平缓区的重要断裂。本文通过对华蓥山断裂滑动和古应力分析表明,华蓥山断裂经历了三期重要的断裂活动:早期近S-N向挤压、中期近E-W向挤压和晚期NE-SW向挤压,分别与三叠纪华北板块和扬子板块的碰撞、燕山期雪峰山隆起向北西的推挤和喜山期印度板块与欧亚板块的碰撞有关。
Huayingshan faults belt is an important boundary separating the ejeetive folds belt in east Siehuan basin and the flat zone of sichuan basin. Results from fault sliding and paleostress reconstruction indicate that there used to be three main periods of tectonic compression,that is the earlier S--N trending compression , the middle E--W trending compression and the later NE--SW trending compression which are related to the three major tectonic events respectively, the collision between North china block and yangtze block during Triassic, the uplifting of the Xuefeng mountain orogenic belts in the period of Yanshanian and the collision of India plate with Eurasiaplate in the period of Himalayan. The thrusting system to east siehuan basin was formed in the middle E--W trending compression event.
出处
《内蒙古石油化工》
CAS
2010年第4期97-100,共4页
Inner Mongolia Petrochemical Industry
关键词
断裂滑动分析
古应力重建
华蓥山断裂
三期断裂活动
逆冲推覆系统
Fault sliding analysis
Paleostress reconstruction
Huayingshan faults belt
Three tectonic events
Thrusting system
