دراسة التعرية الإخدودية وتصنيفها لحوض وادي جق جق شمال غرب مدينة السليمانية - شمال العراق

Abstract

ABSTRACTThe present study of the furrow denudation in the basion of Jig Jig valley depending on Bergisma system proved that the valley was affected by the furrow denudation in different degrees, and it was clear that the basion of the valley was not under the effect of the severe denudation (the third bend) but it was the (second bend) who was affected actually by (the medium denudation) including the denudating degrees (4-5-6) within 42.4 percent, acceqing an area estimated for 150 square kms approximately out of the square of the basin estimated for 250 square kms. Also, it was affected larger by the light denudation represented by the denudating degree estimated for (1-2-3) within 75.78, the band of the medium denudation the rest of the square of the basion. Then, the disclosed geological formations in the basion of the valley and the geological structures of the folds and fissures reflected their effect on the different denudating bends. Also, the nature of slopes had clear effect in limiting the nature of denudation and formation of valleys in the basion generally.