Question

What is the difference in the styles of mountain building between the Sevier and Laramide events?

a. Sevier orogeny resulted in volcanic mountains, while Laramide orogeny resulted in folded mountains.
b. Sevier orogeny occurred at oceanic-continental boundaries, while Laramide orogeny occurred at continental-continental boundaries.
c. Sevier orogeny occurred earlier in Earth's history than Laramide orogeny.
d. Sevier orogeny is associated with subduction, while Laramide orogeny is associated with compressional forces.

Answer 1

The Sevier orogeny resulted in volcanic mountains, while the Laramide orogeny resulted in folded mountains. The Sevier orogeny is associated with subduction, while the Laramide orogeny is associated with compressional forces. option d is answer

Step-by-step explanation:

The Sevier and Laramide events are two distinct periods of mountain building in North America. The main difference between the styles of mountain building during these events is their associated geologic processes.

The Sevier orogeny, which occurred between 140 to 50 million years ago, resulted in the formation of volcanic mountains. This event was associated with subduction, where one tectonic plate was forced beneath another, leading to volcanic activity and the uplift of the crust.

The Laramide orogeny, on the other hand, occurred between 80 to 40 million years ago. It resulted in the formation of folded mountains. This event was associated with compressional forces, where two continental plates collided, causing the crust to buckle and fold. The Rocky Mountains are an example of folded mountains formed during the Laramide orogeny. option d is answer