Geology: Mountain Building
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In general, mountain-building often occurs near what type of plate boundary?
Convergent plate boundaries
Orogenesis: Processes that collectively produce a mountain belt
Describe the 4 processes/settings that produce mountain belts.
Volcanic Activity at Subduction Zones
- o/o: volcanic island arc
- o/c: continental volcanic arc
Forearc region(Compressional Stress) - area between trench and volcanic arc: overlaying plate advances faster than the trench "rolls back"
Backarc region(Tensional Stress) - located on the opposite side of the arc: slab suction pulls upper plate toward the trench
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