Discovery of a NW-Trending Quaternary Fault at Nanling, Anhui Province and Its Implication
详细信息
- 责任者：Yin Gongming (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Chen Xiancheng
- 刊名：Seismology and Geology
- 出版年：2008
- 卷期：30(1)
- 关键词：逆断层 ; reverse faults ; 安徽 ; Anhui
- 页码：p.333-338
- 图表：2 illus., 4 photos, 3 refs.
- 分类号：0300
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
///In the eastern mainland of China there are few cross sections of faults where dislocation of Quaternary strata can be observed. However,The authors found such a profile about 2 km away from the Nanling county, Anhui Province, west to the highway from Nanling to Fanchang. This fault has been identified on the satellite image, but its trace is confined to the southern side of the Nanling Basin. The field investigation indicates that the northwestern end of this fault lies at the Xiaodanyang-Fangshan Fault. It is only 20 km long, striking in NW, dipping to southwest. From observations on the profile, it consists of two small fractures and has two periods of activity at least. The first active period is before middle Pleistocene time, or probably in Early Pleistocene. And the second active period is in or after middle Pleistocene. Its latest motion is of thrust with an amount of dislocation of 40 cm. This fault cross section shows that the NW-trending faults in the eastern Mainland of China have new activities, though on small scales in general.