W edge of Colorado PlateauApril 30, 2017/in /by Marli Miller crustal extension, fault-bounded, fault-controlled https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2017-04-30 20:26:152020-12-10 01:34:04W edge of Colorado Plateau