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1 Citation An accretionary prism, accretionary wedge, or accreted mélange is a wedge-shaped body of faulted and folded material accreted (added) to a continental margin in a subaqueous thrust zone.A mélange is a body of mappable-sized blocks of different rocks jumbled together with little continuity of contacts. The origins of mélanges are either tectonic, submarine sliding (olistrosomes), or diapirism.Olistostromes are mélanges formed by accumulation of submarine, gravitational flow as semi-fluid bodies,, technorati.com
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Astronomy quiz question: cause of plate tectonics 1 Citation Astronomy 210 Quiz 7, Fall Semester 2008Cuesta College, San Luis Obispo, CA What causes Earth's plate tectonics? (A) Convection currents underneath the crust. (B) Tidal forces from the moon. (C) Gradual slowing rotation.(D) Asteroid impacts that cracked the crust.Section 70160(A) : 28 students (B) : 1 student(C) : 0 students(D) : 1 studentCorrect answer: (A)Lateral mantle flow below pulls the crust in certain directions; hot, rising magma produces new crust formation at midocean, technorati.com
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Earthquake Cluster Hits Yellowstone National Park 1 Citation More than two dozen earthquakes magnitude 2.5 and larger strike Yellowstone National Park, Wyoming There could be as much as 37 percent more earthquakes in the United States in 2009; some may occur in areas not prone to quakes, e.g., north, northeast, south and central U.S. Magnitude 3.5 quake strikes YELLOWSTONE NATIONAL PARK, WYOMING Source: USGS This Earthquake Magnitude: 3.5 Date-Time: Wednesday, December 31, 2008 at 09:02:28 UTC Wednesday, December 31, 2008 at 02:02:28 AM at epicenter L, technorati.com
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1 Citation ScienceDaily (Feb. 2, 2009) ? In the last decade, scientists have recorded regular episodes of tectonic plates slowly, quietly slipping past each other in western Washington and British Columbia over periods of two weeks or more, releasing as much energy as a magnitude 6 earthquake. Read more ?, technorati.com
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1 Citation Recently I checked eBay to see what people were asking for their Porsche 914s, and discovered something interesting. I had known that this was the first Porsche model to be produced without all the excruciating hand labor that had traditionally gone into their cars; it was their first mass-produced vehicle. It was made at the Karmann factory in Finland using parts supplied by Porsche in Stuttgart. The thing that was so remarkable about the cars being offered on eBay was the claim that they had t, technorati.com
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