Grand Canyon’s Muav Limestone (Geology of The Grand Staircase)
Exposure: Best seen in the Grand Canyon as the top layer of the Tonto Platform (e.g., along the Bright Angel Trail). It also crops out in the Virgin River Gorge of Arizona/Utah and the Frenchman Mountain area near Las Vegas. Age: Middle Cambrian, 505-495 million years ago. Depositional Environment: Primarily a shallow marine carbonate shelf. It […]


