GEOG 272 Lecture Notes - Lecture 9: Seismology, Thixotropy, Stress (Mechanics)
7 Feb 2018
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Main force that causes this is gravity. In this case, it actually happened very close to montreal (lemeiux slide half way to. Ottawa on the nation river in 1993), within this area we have a lot of glaciation that were deposited during the champlain sea, it deposited clay. Clay have high surface air they tend to hold water, so when it rained a lot of water got retained in the soil. It"s (cid:374)ot al(cid:449)ays obvious that gravity is at play, but it is for this. If the component of gravity is large enough and the soils internal shear strength is small enough, a slope failure can occur: when failure occurs this is mass wasting. Gravity: the main force responsible for mass wasting is gravity, i(cid:374) fa(cid:272)t (cid:862)(cid:373)ass (cid:449)asti(cid:374)g is defi(cid:374)ed as the down slope movement of material under the influence of g(cid:396)a(cid:448)ity(cid:863, gravity is what is driving this.
