Answer:
Correct answers are:
A. Andes ------ 2. Continental- Oceanic.
B. Aleutians----- 3. Oceanic- Oceanic.
C. North American Cordillera---- 4.Arc- Continent.
D. Appalachians----- 1.Continental- Continental.
Explanation:
A. Andes ------ 2. Continental- Oceanic.
This mountain is produced as a product of the collision of an oceanic and a continental plate.
When the continental plate meets the oceanic plate, it is forced to go down through a process called subduction. This process prevents the oceanic plate to slide due to the pressure that the other plate is exerting, which forces it to deform and exit upwards, resulting in the formation of the Andes.
B. Aleutians----- 3. Oceanic- Oceanic
In this case an oceanic plate is immersed under another oceanic plate. It works in the same way as a continental-oceanic collision, since one plate pushes the other down.
These plates are pushed into the Earth's mantle and meet molten rock, which pushes towards the surface and forms the Aleutians, a chain of volcanic islands.
C. North American Cordillera---- 4.Arc- Continent.
This type of Cordillera was formed by several cortical blocks and its origin is due to a possible arc-shaped oceanic plate that allowed it to form in a kind of permanent land mass.
D. Appalachians----- 1.Continental- Continental.
Appalachians were created as a result of the collision of two large continents approximately 280-480 million years ago.
The continents that collided and gave rise to this formation were those that made up Pangea.
