摘要
通过大量野外地质调查,统计和分析了北川映秀断层、前山断层、前山原地系统等各种能够反映古构造应力场地质构造形变痕迹的构造要素,对构造形迹进行了构造期次和力学性质等方面的解析,恢复了龙门山冲断带的构造变形史及应力史。结果表明,龙门山构造带经历了10期以上不同方向、不同应力性质的构造变形。结合区域构造大地构造理论给出了龙门山冲断带构造变形的动力学解释,提出了龙门山构造演化模式。
Through abundant field surveys,the structural elements which can reflect the deformation trace of paleostructural stress field such as Beichuan-yingxiu fault,foreland fault,are summarized and analyzed.Then,the structural stages and mechanical properties of structural trace are analyzed.Thus,the structural deformation history and stress history are recovered.The result shows that the Longmen Mountain has witnessed more than ten times of structural deformations with different directions and different stress properties.Combined with the theory of regional tectonics,dynamic interpretation is performed in this article.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期61-67,10-11,共7页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
龙门山冲断带
变形期次
动力学
构造演化
trust belt of Longmen Mountain
deformation stage
dynamics
tectonic evolution
