plate boundaries. divergent plate boundary description of plate boundary & motion at boundary:...
DESCRIPTION
Divergent Plate Boundary Examples: East African Rift Zone Mid-Atlantic Ridge East Pacific RiseTRANSCRIPT
Plate Boundaries
Divergent Plate Boundary
Description of Plate Boundary & Motion at Boundary: • ON LAND – two plates spread apart; crust
separates and forms a rift valley • IN THE OCEAN – sea floor spreading Physical Features: • ON LAND – Rift valley, shallow earthquakes• IN THE OCEAN – mid-ocean ridge, new sea floor
Divergent Plate Boundary
Examples: • East African Rift
Zone • Mid-Atlantic Ridge • East Pacific Rise
Transform Plate Boundary
Description of Plate Boundary & Motion at Boundary: • Two plates slide past each other horizontally Physical Features: • Fault Lines • Shallow Earthquakes Examples: • San Andreas Fault (CA)
Ocean – Ocean Convergent Boundary
Description of Plate Boundary & Motion at Boundary: • Two ocean plates collide • Subduction Physical Features: • Volcanic island arc; volcanic islands, deep-sea trenches • Shallow to deep Earthquakes Examples: • Japan • Aleutian Islands • Marianas Trench
Ocean-Continental Boundary
Description of Plate Boundary & Motion at Boundary: • One Ocean plate and one continental plate collide • subductionPhysical Features: • Deep sea trenches, mountain chain with volcanoes • Shallow to deep earthquakes Examples: • Cascades • Andes • Peru-Chile Trench
Continental-Continental Convergent Boundary
Description of Plate Boundary & Motion at Boundary: • Two Continental plates collide Physical Features: • Folded mountains, uplifted plateau • Shallow earthquakes Examples: • Alps • Himalayas • Appalachian