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- 9 - <br />• <br />Zt is probable that landslides developed in this area in <br />the geological past, under different climatic and hydrological <br />conditions, The occurrence of such landslides may date back to <br />the Pleistocene time when different hydrologic and climatic <br />conditions existed. <br />The landslide deposits of that period have been entirely <br />modified by subsequent erosional processes and changes in the <br />climatic conditions. We believe that as the valley slope was <br />eroded by individual gulches and valleys, the landslides <br />deposits were well drained and stabilized. The surficial drainage <br />pattern greatly enhanced the stabilization, and the consoli- <br />dation processes contributed to further stabilizing of the site. <br />• <br />Significant erosion in the area resulted probably in the <br />deposition of the transported material in the terraces along <br />the creek; these terraces, which consist of fairly well-rounded <br />gravel and sands, can be clearly identified in the lower part <br />of the valley. They have a significant thickness that is very <br />unusual for a valley of a limited size and drainage area, such <br />as the Munger Creek area. <br />For practical purposes, the remnants of old landslides <br />have a limited importance. Cuts of a significant height were <br />excavated in these deposits and none has created any stability <br />problem except for local sloughing. As all these cuts have <br />• <br />