Shallow Structural Model of Anren Town Geological Map (1:50000) in Wei River Basin

The superficial part of the earth is a key area to maintain human economic development. It not only provides human resources for survival, but also is an engineering carrier of geological hazards, such as landslides, collapses, mudslides, land subsidence and ground fissures. This paper selects Anren town map (1∶50000) as research object and uses series of geological investigation,i.e., field geological survey, geophysical exploration and geological drilling to investigate the geomorphic features, stratum lithology and the fault structure of the geological structure in this area. the main conclusions are as follows: (1) the study areas can be divided into three geomorphic units of loess platform, alluvial terraces of Wei River and alluvial terraces of Yellow River by Shuangquan-Linyi fault and Hancheng-Huayin fault. The lithology of each geomorphic unit is either aquiclude or aquiclude according to hydrological characteristics. (2) Four normal buried faults developed in the shallow alluvial terrace of Wei River, the displacement increasing significantly with their depth and belonging to typical growth fault. Buried faults decide the process of geomorphology and micro-geomorphology and the developing positions of the ground fissures in this area. (3) The shallow geological structure of Anren town is characterized as interphase distribution of water-resisting layer and aquifer, development of buried faults and severe rupture of shallow surface. This paper gives technical support for analyzing the geological disasters, evaluating the carrying capacity of the geological environment, and rationally exploitation of groundwater and ecological environment protection as well.