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The act of melting-freezing, temperatures difference at day and night on altitude, tectonical pressure and existence fissures and crevices in stones, to bring about a favorable base for weathering processes. At continually weathering processes ,in the course of time, deposited debris at footslopes,in valleys and in course of 2 and 3 orders of streams.These debris, gradually by differences factors, for example, the occurrence of flood and Human activity in sensible parts of region, moving and transporting by streams and rivers to long distances.The debris flows in study area, have special characterizes, because existence topographical factors and morphogenes.The length of debris flows in the study area,longer than its width .This rate in difference of altitudes is 1:3 to 1:5.This ratio in old debris flows (near of Kutler and Yengeje village)is great and in present debris flows(everywhere of the study area), which often to be formed on Oligocene,s granits, is little. The results of quantities investigation and statistical analysis, show that, the role of the depth of channels, on to be growth of the length of debris cones is remarkable.The study on paleoclima and deep channels on old debris flow, show that at Holocene age, increased the rate of debris.These debris and deep channels are results of spar vegetation covers, storm events, the occurrence of melts of snow on slope and the occurrence of large floods.
Key words: Debris flows, Debris, Cluster analysis, Quantities analyses, Morphogenes, Sabalan