地震地质 ›› 1988, Vol. 10 ›› Issue (3): 12-20.

• 科研简报 • 上一篇    下一篇

宁夏香山-天景山弧形断裂带新活动特征及1709年中卫南71/2级地震形变带

张维岐1, 焦德成1, 柴炽章1, 宋方敏2, 汪一鹏2   

  1. 1. 宁夏回族自治区地震局;
    2. 国家地震局地质研究所
  • 收稿日期:1987-01-31 出版日期:1988-09-07 发布日期:2009-11-25

NEOTECTONIC FEATURES OF THE XIANGSHAN-TIANJINGSHAN ARC FRACTURE ZONE AND THE SEISMIC DEFORMATION ZONE OF 1709 SOUTH OF ZHONGWEI M= 71/2 EARTHQUAKE

Zhang Wei-qi1, Jiao De-cheng1, Chai Zhi-zhang1, Song Fang-min2, Wang Yi-peng2   

  1. 1. Seismological Bureau of Ningxia Hui Nationality Autonomous Region;<>2. Institute of Geology, State Seismological Bureau
  • Received:1987-01-31 Online:1988-09-07 Published:2009-11-25

摘要: 本文根据野外地质填图和水系位移测量结果,论述了香山-天景山弧形断裂带新生代有两个不同活动性质的阶段,即早期阶段的强烈挤压和晚期阶段的左旋走滑兼挤压。分析、讨论了不同活动阶段的时间界限和转变原因。指出了1709年中卫南71/2级地震形变带的表现形式、延伸范围。

关键词: 宁夏, 香山-天景山弧形断裂, 地震形变带, 新生代活动

Abstract: On the basis of field tectonic mapping and measurement of the water setting displacement, we concluded in this paper that the Xiangshan-Tianjingshan arc fracture zone experienced two different active stages in the Cretaceous, i. e. strongly compression in the beginning and left-lateral strike-slip with compression at the end. The time boundary and cause of transition were analyzed and discussed. The appearance and range of the seismic deformation zone of the 1709 south of Zhongwei M = 71/2 earthquake is also described.

Key words: Ningxia, Xiangshan-Tianjingshan arc fracture zone, Seismic deformation zone, Neotectonics