Plate Boundaries
Construcive (Divergent)
Plate Movements
Geological Process
Associated Landforms
Example
• Two plates of the
oceanic crust moving
apart from each
other
• Two plates of
continental crust
moving apart from
each other
• Upwelling of magma
• Creation of new
lithosphere
• Forms volcanoes
• Mid-oceanic ridge
formation
• Earthquakes
• Causes sea-floor
spreading
• The America’s moving
away from the
Eurasian and African
Plates formed the
Mid- Atlantic Ridge
• Formed East –African
Rift Valley
http://teachertu
be.com/viewVid
eo.php?video_id
=147431
Destructive (Convergent)
Plate Movements
Geological Processes
Associated Landforms
Examples
• Two Plates moving
towards each other
(oceanic crust towards
continental crust)
converging results in the
seduction of oceanic
plate
• Convergent
• Seduction-creates
oceanic trench
• Creation and upwelling
of magma.
• Volcanoes form
• Mountain building
(either folded or Island
Arc)
• Deep –sea trench
formation
• Earthquakes
LAND IS DESTROYED!
Andes Mountains-
Nazca plate sinking
underneath South
American plate creating
the Andes Mountains
http://teachertube.com/view
Video.php?video_id=78053&t
itle=Convergent_Boundary
Collision Plate Margins
Plate Movements
Geological Processes
Associated Landforms
Examples
• Two plates moving
towards each other
(continental crust
toward continental
crust)
• Convergent
• Collision
• Results in oogenesis
(mountain) building.
• Folded mountains
formed
• No volcanoes form here
due to no magma
• Earthquakes (deep and
shallow)
HimalayasIndian plate moving into
Eurasian plate forms the
Himalayas
Conservative Plate Margins
(Transform)
Plate Movements
Geological Processes
Associated Landforms
Examples
• Two plates moving
parallel to each other/
moving sideways past
each other.
• Horizontal movement
• Stick-slip process
• Earthquakes (shallow)
San Andres Fault
-N American plate moving
SEast and Pacific plate
LAND IS NEITHER CREATED move Nwest.
OR DESTROYED
http://www.youtube.
com/watch?v=tIuk2bl
BzHs
Plate boundary rap
• http://www.youtube.com/watch?v=dkELENdZ
ukI
• http://www.youtube.com/watch?v=wW23Z94
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