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Plaques techtonique• http://www.youtube.com/watch?v=cASpyzTRF4Y• Overview in french• http://www.youtube.com/watch?v=ryrXAGY1dmE• Overview with volcanic eruption• http://www.youtube.com/watch?v=1-HwPR_4mP4• Detailed techtonics• http://www.youtube.com/watch?v=JmC-vjQGSNM
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Tectonic (Lithospheric) Plates• Tectonic plates are fragments of the earth’s
lithosphere that fit together like puzzle pieces to form the earth’s crust.
• The tectonic plates are floating on the mantle and their movement causes faults, rifts, volcanoes, mountains and formation of oceanic crust.
• The three types of movements are divergence (when they drift apart from each other), convergence (when they collide together) and transformation (when they slide past each other).
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Convergence and Divergence
• When plates move apart from each other on one of their edges (divergence), they are coliding into each other (convergence) on the other side.
• https://www.youtube.com/watch?v=ryrXAGY1dmE
• Subduction is the process by which the oceanic crust of one tectonic plate slides underneath another plate, and becomes part of the mantle.
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Subduction Zone
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Mid Oceanic Ridge
• A mid oceanic ridge is where two plates diverge. As the two plates move away from one another, mantle rises between them creating oceanic crust.
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Hydrothermal Vents
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Life in the Abyss Article
• http://www.pbs.org/wgbh/nova/nature/life-in-the-abyss.html