PSN-L Email List Message

Subject: Re: what is this geological form related to as seen from google earth
From: bob mansfield mansfieldgeo@.........
Date: Tue, 09 Oct 2012 10:39:22 -0500


What you are looking at is an anticline or syncline - hard to tell on a 
photo - folds caused by compressional forces from a variety of sources.  
In oil producing territory anticlines are indeed potential prospects.   
In this case surface erosion ground off the top leaving the strata 
layers looking like a sliced onion.   It could be fault related - this 
area is located at the southern end of the San Andreas fault system and 
strike-slip motion along the fault can result in local folding.  I found 
a good introduction to southern californaia geology at:,  search for "Geology of Southern California.pdf" by 

Bob Mansfield


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