Morphological Diversification of the Valley Bottom with Reference to Lithological Conditions (Orkhon River, Mongolia)

This paper presents an analysis of spatial diversification relating to the morphology of the Orkhon River Valley bottom along a 417 km-long section, with reference to the lithological conditions and rock resistance to erosion. The research was completed based on the existing cartographic data as grounds for the creation of the GIS database. It has been found that the main factors affecting the morphological diversification of the Orkhon Valley Bottom are as follows: the presence of sedimentary rocks of fluvial origin in the form of widespread alluvial cones, the presence of rocks with considerable erosion resistance and the presence of tectonic faults.