• 责任者：Nie Zongsheng (Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China) ; Ren Yun
• 刊名：Geoscience
• 出版年：2011
• 卷期：25(5)
• 关键词：活动断层 ; active faults ; 内蒙古 ; Inner Mongolia
• 页码：p.938-957
• 图表：8 illus., 3 tables, 25 refs.
• 分类号：0500
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

 Through several years of field investigation and dating paleoearthquake events on the Daqingshan frontal fault, it is initially obtained that Baotou is situated in the western segment of Holocene fault of the Daqingshan frontal fault, which expands along the frontal borders of terrace I or II and is expressed by a series of seismic deformation, such as seismic faults, fault scarps, colluvial wedges, fissure-fill wedges, ground fissures, and liquefaction, which make up of extensive and continual surface ruptures. The seismic faults extend linearly or in a wide arc showing as en echelon faults, and penetrate Holocene strata and the youngest geomorphic surface, and manifest as a series of south dipping normal faults and step normal faults. On the basis of the preliminary study of Holocene active features, division of activity period and strong-earthquake recurrence interval, in combination with action of the historical and present earthquakes, the authors should pay more attention to the earthquake hazard of Baotou.