Quartzite with pervasive lineation, Santa Catalina Mountains, Tucson, Arizona

Whereabouts

Collected this in 2006 on Pontatoc Ridge in the Santa Catalina Mountains, Tucson, AZ. I am attracted to this rock mainly because of what is missing, and the smoothly curved nature of the folding.

Age & Formation
Precambrian Neoproterozoic Apache Group, possibly the Dripping Springs Quartzite, ~1.1 Ga.