GLY 101LEC Lecture Notes - Lecture 8: Divergent Boundary, Convergent Boundary, Anticline
26 Sep 2018
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Distortion: change in size, shape, orientation, or position of a rock mass. Strain: the change in change due to deformation (3 types) Types of deformation depends on temperature and pressure. Brittle: rocks break by fracturing; occurs in the shallow crust/ too shallow rocks; Rocks break and create faults when stress is applied quickly. Ductile: rocks deform by flowing and folding, not breaking. Occurs at high temperature and pressure in the deeper crust. Anticline is an upward fold; natural gas and oil beneath anticline (arch-like); collects material beneath them. Syncline is a downward fold (trough-like); collects material above. Elastic deformation: does not stay deformed; forces are applied and it just returns to its original shape. Stress: force acting on rock which causes deformation. Force: anything that puts objects in motion or changes motion of moving bodies. Stress: the force applied to given area (force per unit area)
