ABSTRACT
In the area of study it was noted that the propagation of gullying was associated with the expansion of the canal network, which can rupture and force back topographical divides. The advance of the gully undermines the stability of the two masses with different slide directions, one along the erosion axis and the other approximately perpendicular, which is dislocated as if it were a plate. These masses are called A and B respectively, and can be seen in Figure 1.
