Download 41-Geology-Plate Tectonics

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41­Geology­Plate Tectonics
Aim #41: The Theory of Plate Tectonics
• The (solid) crustal plates "float" on the partially molten section of the mantle.
• Convection currents in the upper mantle may be the driving force behind the movement of the crustal plates
41­Geology­Plate Tectonics
http://www.classzone.com/books/earth_science/terc/content/visualizations/es0804/es0804page01.cfm?ch
41­Geology­Plate Tectonics
A. Divergent Boundary:
ex. rift valleys and the Mid­Ocean Ridge
B. Convergent Boundary:
ex. Oceanic­Oceanic­ sea floor spreading
Continental­Continental­ complex mountain ranges (Himalayas)
Oceanic­Continental­ subduction, volcanic arcs
C. Transform Boundary:
ex. Faults and Earthquakes
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