The Grand Canyon has a 1.2 billion year old secret hidden at its base. There are many things about the Grand Canyon that fascinated geologists for centuries.

A constraint on post–6 Ma timing of western Grand Canyon (Arizona, USA) incision removed: Local derivation indicated by ca. 5.4 Ma fluvial deposits below Shivwits Plateau basalts north of Grand ...

Frenchman mountain dolostone: 500 million-year-old grand canyon rock layer finally gets a name Geologists name ancient rock layer after Las Vegas mountain that contains similar strata Date: May 3 ...