Plate Tectonics Mountain building process Where is the process found?  The converging/destructive plate margin  oceanic crust vis-à-vis oceanic crust.

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Presentation transcript:

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 Converging convection currents of magma Two plates converge Sea Trench Subduction Island arcs Magma rises Subducted crust melts Cracks in the overlying crust

The Japanese Island Arc Eurasian Plate Philippine plate

Island arcs next to sea trenches Japan Trench Marianas Trench

The Pacific Ring of Fire

 Ocean-continental Convergence What if the two plates continue to converge? Crustal melting Thrust up Sedimentary rock folded up to form mountain range

 Which mountain range is formed by this oceanic-continental convergence? The Andes

Collison of ______ Plate and ____________ Plate Subduction of _________ Plate and form the ________ Trench 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 Nazc a South American Nazca Peruvian

 Continental-Continental Convergence Where?  Collision of Eurasian Plate and Indo-Australian Plate The Himalayas:

 India moving towards Asia

Continental-Continental Convergence Tibet India