Collision Plate Margins Flashcards
Direction and type of plates?
Two continental plates moving towards each other
What is originally between these plates? Name an example
A body of water - Tethys sea
Why do these plates move?
Convection currents in the asthenosphere
What type of plate is between the two continental?
Oceanic
What happens to this oceanic plate?
It subducts as it is denser
What pulls the two plates together?
Slab pull
What is the ocean sediment that is scraped up called?
Accretionary wedge
When does subduction stop?
When 2 continental plates meet
What forces from convection currents cause plates to buckle?
Compressional
What does the plates buckling lead to? Name an example
Fold mountains. Himalayas
Is there volcanism at a collision boundary? Why?
No - no partial melt or gaps for it to go through
Is there earthquake activity at collision? Why?
Yes - due to buckling and folding
