The Appalachians formed as a result of the
A) Laramide orogeny.
B) Alleghany orogeny.
C) Cordilleran orogeny.
D) Alpine orogeny.

Question

Quizplus · Accepted Answer

The Appalachians were formed as a result of the Alleghany orogeny, which occurred from the Late Devonian to the early Permian periods (about 359 to 299 million years ago). This orogeny involved the collision of the ancient continents of Laurentia, Baltica, and Avalonia, leading to the formation of the supercontinent of Pangaea. The collision resulted in the uplift and folding of rock layers, forming the Appalachian Mountains.

The Appalachians Formed as a Result of the