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Unformatted text preview: Stress - force exerted per unit area within rocks on other Earth materials Strain - deformation (size, shape, orientation) on rock materials caused by stress Rock strength - rock's ability to withstand a magnitude level of stress before rupture Earthquake - sudden release of strain energy caused by rock rupture (through faulting) some earthquakes induced by human activities - smaller magnitude, reservoir-induced earthquakes, deep waste disposal cause slippage/earthquakes, nuclear explosions Earthquake has a focus on a fault - surface level focus = epicenter, fault = fault scarp Earthquake Magnitude Scale Richter scale: amplitude of seismic wave indication ground motion. Log Scale increase of one order in magnitude = tenfold increase in magnitude Moment Magnitude scale: amount of strain energy released...
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This note was uploaded on 11/19/2011 for the course GEOL 1011 taught by Professor Brown during the Fall '11 term at GWU.
- Fall '11