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Convergent Plate Boundaries Finz 2011 What are the 3 types of Convergent Plate Boundaries? • Convergent Continent-Ocean • Convergent Ocean-Ocean • Convergent Continent- Continent Convergent Continent-Ocean Plate Boundary • Occurs when an ocean plate collides with a continental plate • The ocean plate will ALWAYS go underneath the continental plate • The process of the ocean plate going underneath a continental plate is called - SUBDUCTION What forms at a Convergent Continent-Ocean Boundary? • • • • • New Metamorphic Mountains Ocean trenches Subduction zone for plate melting Magma chamber from melted plate Continental Volcano above magma chamber What kinds of Earthquakes occur at an Convergent Continental-Ocean Boundary? • Along the subduction zone there will be: – shallow EQ’s – intermediate EQ’s – deep EQ’s • All these EQ’s occur along a 45° angle Convergent Ocean-Ocean Plate Boundary • Occurs when an ocean plate collides with another ocean plate • The most dense ocean plate will ALWAYS go underneath the less dense plate • The process of an ocean plate going underneath another ocean plate is called - SUBDUCTION What forms at a Convergent Ocean-Ocean Boundary? • • • • • Ocean trenches Subduction zone for plate melting Magma chamber from melted plate Oceanic Volcano above magma chamber A series of new islands called an Archipelago or an Island Arc – an archipelago is a chain of volcanic islands What kinds of Earthquakes occur at an Convergent Ocean-Ocean Boundary? • Along the subduction zone there will be: – shallow EQ’s – intermediate EQ’s – deep EQ’s • All these EQ’s occur along a 45° angle Convergent Continent-Continent Plate Boundary • Occurs when a continental plate collides with another continental plate • The two continents deform because of the collision • Both plates are bent up and down What forms at a Convergent Continent-Continent Boundary? • New Metamorphic Mountains What kinds of Earthquakes occur at an Convergent Continent-Continent Boundary? • Along the collision zone there will be: – shallow EQ’s – intermediate EQ’s – deep EQ’s Transform Fault or Side-by-side Plate Boundary • Occurs along a crack in a tectonic plate • Each plate will slide past one another What forms at a Transform Fault or Side-by-side Boundary? • Fault lines • Rift Valleys What kinds of Earthquakes occur at a Transform Fault or Side-by-side Plate Boundary? • Along the friction zone there will be: – shallow EQ’s – intermediate EQ’s – deep EQ’s Japanese Tsunami Videos • http://www.youtube.com/watch?v=oWzdgBNfhQU • Graphic• http://www.youtube.com/watch?v=dJBS94GVyuo&feature=fvst • • • • http://video.pbs.org/video/1863101157 - long video http://www.youtube.com/watch?v=GL5gVPoz-uE http://www.youtube.com/watch?v=naQZ0PR3S6w http://www.youtube.com/watch?v=iLZcjfWfuO8&feature=edu&li st=PL0A49CA0F0E6D8EDA
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