Geomorphological Features in Luoyangshan Area, Guangxi Zhuang Autonomous Region and its Relations with the Maximum Effective Moment Criterion
详细信息
- 责任者：Zhang Peiquan (Seismological Bureau of Guangxi Zhuang Autonomous Region ; Nanning 530022 ; China) ; Li Bingsu
- 刊名：Journal of Geomechanics
- 出版年：2012
- 卷期：18(1)
- 关键词：大震 ; great earthquakes ; 孕震构造 ; seismogenic tectonics ; 广西 ; Guangxi Province
- 页码：p.79-90
- 图表：8 illus., 30 refs.
- 分类号：0500
- issnNo：ISSN1006-6616
- isbnNo：CN11-3672/P
摘要
In this paper,data about the intensity distribution in the meizoseismal area of Lingshan M=63/4 earthquake, geological structure, geomorphologic investigation and fission track dating were used to discuss the geomechanical environment in Lingshan Hill area. In the meizoseismal area,a T-shape IX＋zone coupled NE Zhaixu Fault and NNW Sizhou Fault. Researches on tectonics and geomorphology showed uplifting of Luoyangshan Hill. The data of fission track dating supported this geomorphologic phenomenon. A new channel in front of Luoyangshan Hill（Gaodong） appeared in the west of the old channel. Distribution of earthquakes showed that a lot of low magnitude earthquakes concentratedly occurred in the southeast of the cross zone of NE Zhaixu and NNW Sizhou faults. All above were controlled by the Maximum Effective Moment Criterion（MEMC）.
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