Transcript Plate Tectonics

Plate Tectonics
Mountain building process
Where is the process found?
The converging/destructive plate margin
oceanic crust vis-à-vis oceanic crust
oceanic crust vis-à-vis continental crust
continental crust vis-à-vis continental crust
 Oceanic-Oceanic
convergence
Island
arcs
Magma
Sea Trench
rises
Two plates converge
Cracks in the
overlying crust
Subducted
crust melts
Converging convection
currents of magma
The Japanese Island
Arc
Philippine plate
Eurasian Plate
Island arcs next to sea
trenches
Japan Trench
Marianas
Trench
The Pacific Ring of
Fire
 Ocean-continental
Sedimentary rock
Convergence
folded up to form
mountain range
Crustal melting
What if the two plates continue to converge?
 Which mountain range is formed by
this oceanic-continental convergence?
The
Andes
The Andes
Nazc Plate and
• Collison of ______
a Plate
South
____________
American of _________
Nazca
• Subduction
Plate and form
Peruvian Trench
the ________
• Crustal melting of the subducted crust and
formation of island arcs
• Folding of sedimentary rocks previously
formed on the Pacific ocean floor
• Magma rises to form sills, dykes and
volcanoes
 Continental-Continental
Convergence
The Himalayas:
 Collision of Eurasian Plate and
Indo-Australian Plate
 India
moving
Asia
towards
Continental-Continental
Convergence