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11 Jan 2012
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Lecture 9 y alpine himalaya orogeny. y destroying crust. y pacific is already closing, y everything headed to the supercontinent. y figure 2. 29 in textbook: goes into obduction. Indian subcontinent. y effects of india being driven as a wedge. Afghanistan, pakistan wants to get out of the way. South east asia is escaping from indent being driven up into asia. y collision is huge. y other crust in asia trying to escape. Run in, there is a subduction zone down here in indonesia. Big collision happening today. y mediterranean, if you follow it westward, ocean that lay between africa and. It will be gone as africa moves up. Mountain range of africa colliding with europe is the swiss alps, french alps and austrian alps. High temperature & high pressure. y granite is much acidic, higher content of silica. No. y ophiolite is the name given to green rocks that come form metamorphism from basalt. y pillow basalt.

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