GEOL 1001 Chapter : GEOL 1001 Plate Tectonics
Document Summary
It is the movement of the plates and the forces acting between them. Explains distribution of volcanoes, earthquakes, folded mountain chains, and seafloor structures. Substantial plates: carribbean, nazca, philippine, arabian, cocos, scotia, juan de fuca. Andes, cascades: oceanic-oceanic, one descends (subducts) beneath the other, often forms volcanoes on the ocean floor, when volcanoes emerge as islands, a volcanic island arc is formed (japan, Aleutian islands, tonga islands: continental-continental, continued subduction can bring two continents together, less dense, buoyant continental lithosphere does not subduct, collision produces mountains (obduction) (ex. Red sea), to ocean basin and oceanic ridge creation: testing plate tectonics: Evidence from ocean drilling: samples of ocean floor from drilling (ex: deep sea drilling project. Evidence from hot spot and mantle plumes: mantle plume: upwelling of hot rock, causes decompression melting from reduction in p, hot spot on the surface (fixed, hot spot track: formed as plate moves (volcanic island chain, ex.
