THE RELATIONSHIP BETWEEN THE TECTONIC LANDFORMS AND STRUCTURES IN THE WEIHE RIVER BASIN
渭河盆地的地质构造与构造地貌类型

The Weihe River Basin stands where the four tectonic systems of Qilu,Qin-ling, latitudinal direction, cathaysian and Longxi roll-up intersect, such tectonic characteristics lay a basis for the formation of tectonic landforms of the basin.According to the tectonic structures and formation causes, the tectonic land-forms in the Weihe River Basin can be classified into eight types and each type can be divided further into correspondent based on neotectonic movement characteristics.These geomorphic sequences, which stretch into belts in east-west direction, have lomologous features in north-south direction and possess terracing spatial variations,Under the control of major tectonic systems in the Weihe River Basin, the graben structure with its own features serves as main cause for estabishment of the landform spatial arrangement.The development of tectonic landforms in the Weihe River Basin underwent three stages, namely, preparation stage of Mesozoicera, Tertiary establishment stage and Quaternary completion stage.