Navajo Sandstone

Navajo Sandstone is a geologic formation in the Glen Canyon Group that is spread across the U.S. states of southern Nevada, northern Arizona, northwest Colorado, and Utah as part of the Colorado Plateau province of the United States.

• http://en.wikipedia.org/wiki/Navajo Sandstone
• Page 55 - Loope, D. et al., 2016, Sandstones and Utah's canyon country: Deposition, diagenesis, exhumation, and landscape evolution: Geol. Soc. Am. Field Guide 44, p. 41 - 71.