GLGY 209 Lecture Notes - Lecture 12: Differential Stress, Anticline, Thrust Fault
4 May 2019
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Document Summary
Slaty cleavage slates dominant type in slaty cleavage. Phyllitic (cleavage or foliation); these rocks originate through the metamorphic changes of the very fine sedimentary rocks. Schistose foliation; - dominant in rocky mountains. Structural geology rock response to applied force. Force the push or pull that results in a change in the motion of a physical body of given mass. Stress the amount of force per unit area. Change in place displacement rock moved from one place to another. Change in shape strain original volume changes its shape. Confining stress - confining pressure or vertical stress, is the pressure or stress imposed on a layer of soil or rock by the weight of overlying material. Differential stress compression (pushes on the rock) tension stretches the rock, and shear (applied in two opposite directions). There are two major categories of crustal structures very high pressure. Folds results of ductile deformation high pressure. Faults results of brittle deformation towards earth surface.
