EARTHSC 1G03 Study Guide - Final Guide: Aphanite, Dolostone, Turbidite
15 Sep 2016
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Porphyritic: mix of (cid:471) distinct sizes of the same/di erent minerals. Frothy: contains vesicles / gas bubbles e. g. pumice a. k. a. cellular. Olivene v(cid:474)(cid:471)% silicaw: pulls metals out of magma (cid:471). Crust usually breaks in (cid:472) cracks of ~ Foreshocks: early quakes as rocks begin to fracture. A ershocks: a er the quake, rocks along the fault adjust and transfer strain. Secondary (cid:539)s(cid:540): perpendicular to transport dondt go through liquids a. k. a. shear waves. Richter magnitude scale: logarithmic based on max amplitudes on seismographs. Moment magnitude: more accurate, related to fault rupture size and seismic energy. Mercalli intensity scale: destructiveness infrastructure, time, rock types. In california, if a building isndt up to code, you must have a sign up that says the building isndt up to code. Liquefaction: when sediments / soil temporarily acts like liquid because the particles break contacts with each other can be caused by earthquakes.
