volcanic hazards

Volcanic hazards - Crises of a Planet Volcanic Hazard 18:06 Clicker Questions-During magnetic reversal the Earth will turn upside down False-Most

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Crises of a Planet: Volcanic Hazard 18:06 Clicker Questions: -During magnetic reversal, the Earth will turn upside down. False -Most of the earth’s seafloor has been recycled back into the mantle True -The greater the distance to an earthquake epicenter, the longer the time b/w primary and secondary waves -True -The San Andreas fault is a boundary b/w the N. American and Pacific plates, the latter presently moving northward toward the Aleutian trench True The Appalachian Mtns…. Represent the remnants of a him.-type mtn. chain, formed 3 stages of island arc and continental collision, were rifted the components of which occur on both sides of the Atl. Ocean Once stretched from the blatic ocean to west Texas -The Sierra Nevada mtns. Are mostly comprised of granite, represent the igneous roots of an Andean-type volcanic arc, are testimony for subduction that once existed beneath CA, -Continental collision results in… a double thickness of continental crust, formation of un -difference b/w 2 and 5 measurements on Richter is
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This note was uploaded on 10/26/2009 for the course GEOL 108 at USC.

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Volcanic hazards - Crises of a Planet Volcanic Hazard 18:06 Clicker Questions-During magnetic reversal the Earth will turn upside down False-Most

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