EESA06H3 Lecture Notes - Lecture 9: Boudhanath, Rocky Mountains, Metamorphic Rock

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13 Dec 2012
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History doesn"t repeat itself: but it often rhymes . On the cusp of a resource boom. Locus of next super continent = south east asia. Obduction process where continents collide together = earthquakes. Effects are felt over a very large area china, Mediterranean is a remnant of the ocean that laid between africa and europe. Most common type of rock is gneiss high grade metamorphic rock, high pressure, high temperature. Ex: canadian shield used to be high mountains. Granite pluton is more acidic, high content of silica. Rhyolite produced from high explosive volcanism, local melting no subduction. Fold and thrust belts - cover rocks dominantly sedimentary rocks in high pressure: high contents of resources: oil + gas. Ophiolite remnants of oceanic crust: green rocks result from basalts. Orogeny the process of mountain building. Orogen name given to the folded rocks that results: ex: western alps, tibetan plateau. Closure of the tethys ocean as pangea breaks up.

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