The Origin and efective processes in developing the gulleis in khoor and Biabanak area

Khoor and Biabanak area is located in centeral Iran, amongst areas that is in soil erosion and in spite of lack of runoff in area, observe several gully erosion in area. This structure is the most complex erosion structures that have evolution and growth during some steps and during the time. Natural processes and human factors have efective role in this case, but active tectonic as a most important factor in generating the part of gullies have basic role, but in neither inner nor foreign surces don’t attend to this factor in developing this phenomena.By investigating in this research can offer need full documentation on effect of active tectonic in generating gullies and introduce this factor as one of the factors in generating the turbulent and unbalance forms in this area. The main goal in this research is introduce the active tectonic factor as main factor in generating the Ordib gullies and affirmation on gullies genesis Variety in area of study. Analyse the climate data and geo field measuring of gullies dimensions in analytical wayes format, hydrothermal coefficient and WS coefficient shows that gullies generator processes in Khoor, Bayazeh and Ordib area have not climatic origin and more result of local base level changes and water base level for rupture the lake in Bayazeh and over flow and finaly for active tectonic changes in Ordib area.