Cat Mountain Debris Flow, Tucson Mountains                 
Cochise College         

Virtual Geology Field Trips
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Roger Weller, geology instructor  copyright 2017-R.Weller

dirt beneath channel boulders showing air pockets-B
As the debris flow moved down the slope, pockets of air were trapped
in the mud and silt.


Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.