Plate Tectonics
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PRESENTATION OUTLINE
PLATE TECTONICS
THEORY THAT PLATES GLIDE OVER THE MANTLE IN THE LITHOSPHERE
SLAB PULL
MOTION WHICH CAUSES SUBDUCTION
RIDGE PUSH
FORCE THAT PUSHES AWAY FROM THE MID-OCEAN-RIDGE AND CREATES NEW CRUST
DIVERGENT PLATE BOUNDARY
TECTONIC PLATE BOUNDARY WHERE TWO PLATES MOVE AWAY FROM EACH OTHER
ON LAND DIVERGENT PLATE BOUNDARIES FORM RIFT VALLEYS
DIVERGENT PLATE BOUNDARIES IN THE OCEAN FORM THE MID OCEAN RIDGE
CONVERGENT PLATE BOUNDARY
PLATE BOUNDARY WHERE TWO PLATES MOVE TOWARD EACH OTHER
When oceanic and continental crust converge they form volcanic arcs, like the Andes Mountains.
When two oceanic crust converge they form island arcs, like Hawaii.
When two continental crusts converge it forms uplifted mountains, like the Himalayas.
SUBDUCTION ZONE
THE AREA WHERE OLD ROCK IS PUSHED INTO THE MANTLE AND RECYCLED.
