GEOL 352 Lecture Notes - Lecture 4: Fault Scarp, Thrust Fault
13 Nov 2020
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Document Summary
Brittle deformation: permanent and breaks molecular bonds rather than bending them. Faults: cracks in the rock with appreciable offset. Dip-slip faults---motion is parallel to the dip of the fault (i. e. motion primarily vertical and parallel to the fault plane). If the remaining side has a slope and the fault has an angle greater than 90 degrees from horizontal it is the footwall. If the top side has an overhang, and the angle between the fault and horizontal is less than 90 degrees it is the hanging wall. Where a rock breaks to create an earthquake. Epicenter the location on the surface directly above the focus. Reverse fault: the angle between the fault and the surface is high (the fault is dipping steeply), hanging wall up. Thrust fault: the angle between the fault and the surface is low (the fault is dipping shallowly), hanging wall up.
