Types | Process | Types of plates | Landforms | Examples | ||||||
Divergent Plate Boundary |
A) 2 oceanic plates move
away from each other B) Magma rises at fracture to create ridge C) Create volcanoes if magma builds above sea level |
|
Oceanic - Oceanic plate | Oceanic
ridges Volanic islands |
Mid-Atlantic
Ridge Azores in North Atlantic Ocean |
|||||
A) 2
continental plates move away
from each other B) Stretched and cause fractures at boundary C) Land in between sinks and forms rift valley and volcanoes |
|
Continental - Continental plate | Rift
valley Volcanoes |
Great
Rift Valley of East Africa Cascade Range volcanoes |
||||||
Convergent Plate Boundary |
A) 2 oceanic plates move
towards each other B) Denser oceanic plate subducts under the less dense plate C) Forms oceanic trench at subduction zone D) Crust of subducted plate melts and form magma E) Magma rises and forms volcanoes or island arc F) Earthquakes occur due to friction from subduction |
|
Oceanic - Oceanic plate | Oceanic
trenches Volcanoes Island Arc |
Mariana
Trench Mount Etna Mariana Islands |
|||||
A) 2
continental plates collide towards each other B) Crust compresses and folds C) Massive folding forms a range of fold mountains |
|
Continental - Continental plate | Mountain Range | Himalayas | ||||||
A) 2
oceanic plates move towards
each other B) Denser oceanic plate subducts under the less dense continental plate C) Forms oceanic trench at subduction zone D) Crust of subducted plate melts and form magma E) Continental plate folds into fold mountains F) Magma rises through crust and forms volcanoes |
|
Oceanic - Continental plate | Oceanic
trenches Mountain ranges |
Sunda
Trench Barisan Mountains |
||||||
Transform Plate Boundary |
A) 2 plates slide
past each other B) Creates stress and tension C) Tension released as earthquakes |
|
Continental - Continental Continental - Oceanic plate Oceanic - Oceanic plate |
None | North
Anatolian Fault San Andreas Fault |
Sunday, July 19, 2015
Plate tectonics summary
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