CAS ES 142 Study Guide - Midterm Guide: East Pacific Rise, Continental Collision, San Andreas Fault
24 Mar 2015
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Document Summary
Draw a cross section of oceanic plate subducting beneath a continental plate (nazca beneath south america): a subduction zone is a process where one plate descends beneath another plate, oceanic-continental. Oceanic plate always descends beneath the continental plate because the oceanic. Oceanic-oceanic (old beneath new: the island arcs are created (japan, philippines and aleutians) Features: volcanoes, earthquakes, ocean trenches, island arcs, submarine mountain ranges, mountain. Some of the volcanoes build up to the surface of the ocean and become islands: over millions of years the plate will move across the hot spot and the original volcano erodes and becomes inactive. Spreading zone: mid-atlantic ridge , east pacific rise. Shear zones: san andreas fault in california, dead sea fault: what is an island arc, long, curved chain of oceanic islands associated with volcanism and seismic activities and caused by oceanic-oceanic collision and at the tectonic plate margin.
