Question

the andes mountains in south america are a classic example of a specific type of mountain-building. identify the type of convergent boundary that formed them and describe the geological processes that create mountains at this boundary. 4 points your answer

Explanation:

The Andes Mountains form at an oceanic-continental convergent boundary. Here, the dense Nazca Plate (oceanic crust) subducts beneath the less dense South American Plate (continental crust). Subduction causes melting of the oceanic crust and mantle material, forming magma that rises to create volcanic activity. The continental crust is compressed and uplifted, leading to the formation of folded and faulted mountain ranges.

Answer:

Type of convergent boundary: Oceanic-continental convergent boundary
Geological processes: The dense oceanic plate subducts under the continental plate; subduction triggers magma formation and volcanic activity; compression uplifts and deforms the continental crust to build mountains.