Geology 404C Plate Tectonics & Earth History Outline 3

Geology 404C Plate Tectonics & Earth History...

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    Outline 3 1/29/03   Where are plates (+ plate boundaries today?)      3 types of surface plate boundaries +      base of lithosphere (asthenosphere)   Start of spreading - doming + breakup of a supercontinent      start of new spreading cycle - why?      start of new geosyncline deposition      aulacogen (rift valleys) as 3rd arm of domes   Where are hot spots located today?      movement of plate over a hot spot - Hawaii example   Continent - continent and continent - island arc collisions      cause of terminal and intermediate orogenies   Spreading mechanisms for plate movement -
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Geology 404C Plate Tectonics & Earth History...

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