EARTHSC 2GG3 Chapter Notes - Chapter 15: Silt, Bentonite, Sturzstrom
29 Dec 2019
School
Department
Course
Professor
Document Summary
Any time an object is on a slope there is a fine balance of friction keeping object in place and gravity pulling it down hill. The steeper the slope the greater the chance an object will fall down the slope. If friction is overcome, object will be pulled down the hill by gravity. Occur in regions where there are distinct freeze thaw cycles. Water moves into cracks and expands when frozen occurs over a number of years widening the crack. Hot climate does not have the same impact on rocks, very little expansion. Prevention: don"t build at the bottom of a cliff. Slide: semi-solid mass on slip surface (may be planar or curved) Object remains in tact and slides down never losing contact with ground. Some preslide coherence maintained within moving mass. Rotational movement of object as it moves downward. Rotation of a slump block on an arcuate surface also rotates everything on the block.
