1. Convergent Plate Boundaries
Use this PPT for p. 11 in your INB!

2. Convergent means: moving together
“con” means together (Think connect or contact)
There are two types

3. (1) Subduction the denser plate subducts beneath the less dense plate
two scenarios: (A) OCEAN-OCEAN & (B) OCEAN-CONTINENT

4. (A) OCEAN-OCEAN SUBDUCTION
Resulting Landforms: (1) trench (2) volcanic island arc (chain)

5. Where in the World is this Boundary???
Aleutian Islands, Alaska
Japan Trench
Marianas Trench
(Challenger Deep)

6. (B) OCEAN-CONTINENT SUBDUCTION
Resulting Landforms: (1) trench (2) volcanic mountains

7. Where in the World is this boundary?
Andes Mountains, South America
Pacific Northwest, USA

8. (2) Collision: continent- continent
No subduction, therefore no volcanoes
Resulting Landforms (1) folded mountains & (2) high plateaus

9. Where in the World is this boundary?
Himalaya Mountains, India
Appalachians, USA (long ago!)
 Himalayan mountains (top of picture is West)