EAS210 Lecture Notes - Lecture 7: Ultimate Tensile Strength, Blanketing, Gravitropism
30 Nov 2018
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Chapter 14, p. 310-328 earth: an introduction to physical geology 4ce: types of mass movements this treatment is both simpler in some respects, and more complete in others, compared to text treatments; courtesy dr. d. m. Underlying or downslope support is usually removed by such thing as: natural forces such as cliff erosion and wave action, and human activities like mining and excavation: topple. Defined: these movements involved shear and displacement along a surface or narrow zone of failure, with the displaced mass exhibiting [little or] no internal deformation: translational slide, or glide. The mass moves along planar surface, that is normally controlled by a previous rock discontinuity, or by the contact between unconsolidated materials and bedrock: rotational slide, or slump. The failure surface is as described: curved, concave upward, with the axis of rotation above the center of mass. Usually, the circumstance is as follows: the shear strength of unconsolidated materials is exceeded (e. g. soils)
