ESCI 1001 Lecture Notes - Lecture 4: Philippine Sea Plate, Pacific Plate, Continental Margin
Document Summary
Spreading centers make new crust at different rates. When spreading rate is faster, the sea level rises. Continent against continent (san andreas, dead sea) Ocean-ocean convergence- one plate is being subducted. Pacific plate being subducted by philippine plate. The lithosphere is being subducted by overlying plate. Line of volcanoes on line ov overlying plate. Ocean-continent convergence- when oceanic lithosphere meets continental lithosphere, the oceanic lithosphere is subducted, and a volcanic mountain belt is formed at the continental margin. Nazca plate being subducted under south american plate. Japan sea was formed by this extension. Continent-continent collisions- crust doesn"t want to be subducted, so belted mountains form. Himalaya mountains and tibetan plateau (45 mya) Triangulation using three or more gps satellites can locate a precise point on earth and can predict earthquakes and volcanic activity. Japan has 1233 stations throughout the country. Magma supply that stays stationary, not moving with the plate. When plate moves, it leaves trace of volcanoes.
