At the border of the South American and Nazca plate, there is a long and large mountain range called the Andes. Why did these mountains form?
• These mountains formed due to a transform boundary.
• These mountains formed due to a still boundary.
• mountains formed due to a convergent boundary.
• These mountains formed due to a divergent boundary.
The correct answer is:
• These mountains formed due to a convergent boundary.
The Andes mountain range was formed as a result of the convergent boundary between the South American Plate (to the east) and the Nazca Plate (to the west). The Nazca Plate is denser and is subducting beneath the South American Plate, causing compression and uplift of the crust, leading to the formation of the Andes.