California  -  Devils  Post Pile
Cochise College                                       

Geology Home Page
Virtual Geology Field Trips  

Roger Weller, geology instructor   

wellerr@cochise.edu  copyright 2015-R.Weller

last edited:  12/20/15    number of photos:  10 



photos 
columnar jointing
vertical columns:  1  2
pile of broken columns:  1  2  3  4
broken column leaning against tree

columns are porphyritic basalt
 

evidence of creep
hockey stick trees:  A  B

 

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.