Arizona Desert

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I'd say the last photo was taken near I-10, 50 miles or so from Tucson.

They look familiar to me, then again... a rock is a rock, no?

West Texas, New Mexico, and Arizona offer some of the best landscape ever. I say this as a native of Colorado mountains. I love the desert and I love rocks.

Texas Canyon off of I-10?

Sheril, that is most likely the Texas Canyon Granite, which is latest Cretaceous in age (just before the dinosaurs kicked off). The joint patterns are fairly typical of these types of rocks, and when water seeps down them, the freeze cycling expands them and causes more erosion.

By Lee Allison (not verified) on 05 Feb 2009 #permalink

Looks like the rest stop on I-10 some miles east of Tuscon. First time I went to Tuscon, we tried to drive through going all night. We played out about 3AM and parked in this rest stop. I woke up at sunrise and saw the scenery for the first time. I was much impressed.

By Jim Thomerson (not verified) on 05 Feb 2009 #permalink