西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (2): 61-67.

• 地质勘探 • 上一篇    下一篇

龙门山冲断带构造变形期次及动力学成因

戴建全   

  1. 成都理工大学沉积地质研究院,四川 成都 610059
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-20 发布日期:2011-04-20

ANALYSIS ON STRUCTURAL DEFORMATION STAGES AND DYNAMIC GENESIS OFTRUST BELT IN LONGMEN MOUNTAIN

DAI Jian-quan   

  1. Sedimentary Research Institute, Chengdu University of Technology, Chengdu, Sichuan 610059
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-20 Published:2011-04-20

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。

关键词: 龙门山冲断带, 变形期次, 动力学, 构造演化

Abstract: 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.

Key words: trust belt of Longmen Mountain, deformation stage, dynamics, tectonic evolution

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