Multiple choice

The Appalachian Mountains were formed in which of the following periods?

  1. Cretaceous

  2. Mesozioc

  3. Palaeozoic

  4. Tertiary
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Appalachian Mountains were formed during the Paleozoic Era, primarily through the Alleghenian orogeny around 325-260 million years ago when continental collisions built major mountain ranges. The Cretaceous, Mesozoic, and Tertiary are much younger periods that occurred after the Appalachians had already formed and begun eroding.

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