Chap15_weathering_sakai

Chap15_weathering_sakai - Focus:10 km (6mi) deep Epicenter:...

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Focus :10 km (6mi) deep Epicenter : 26 km (16 mi) SW of Guadalupe Victoria in Baja California Magnitude: 7.2 Earthquake felt at different distances from epicenter Las Vegas: 460 km (290 m) Los Angeles: (360 km)(224 mi) Phoenix: 300 km (186 mi)
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Diastrophism Earth’s crust is deformed, bent, broken Results from pressure and force exerted on solid crustal rocks May or may not be related to plate movement Two types
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Diastrophism: Folding Slow lateral compression of rock material when pressure applied for a long time in subterranean environment
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Fold Belt (Pennsylvania )
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Appalachian topography: an example of folding
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Diastrophism: Faulting Scarp Scarp: edge of a vertically displaced block that may rise abruptly. Vertical or horizontal movements of crust Break and displace solid rock along a fault zone ( zone of weakness) Fault line : intersection of a fault zone and Earth’s surface Can occur suddenly or slowly
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Mona Island, P.R.: scarp as a consequence of faulting
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Transform or strike-slip faulting related to transform plate boundary Fault lines in Western US and Mexico
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Transform or Strike-Slip Faulting
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Offsetting across a Transform Fault (California )
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What is the name given to the semi-molten layer at the top of the mantle over which crustal plates move?
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If limestone is metamorphosed by heat and pressure, what rock results?
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Where do we find the youngest rock being formed?
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magma from within the Earth and the lateral movement of new ocean floor away from the zone
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This note was uploaded on 10/16/2011 for the course GEOGRAPHY 101 taught by Professor Vancura during the Spring '08 term at Rutgers.

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Chap15_weathering_sakai - Focus:10 km (6mi) deep Epicenter:...

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