Laramidian orogeny

Laramidian orogeny

[‚lar·ə′mid·ē·ən ȯ′räj·ə·nē] (geology) An orogenic era typically developed in the eastern Rocky Mountains; phases extended from Late Cretaceous until the end of the Paleocene. Also known as Laramic orogeny; Laramide orogeny; Laramide revolution.