 Schist (fault gouge)
              This sample of schist display intense fracturing and re-healing (annealing)  from being subjected to shearing motion along a fault zone.  This sample is from a San Benito River gravel bar (near the San Andreas and Calaveras fault zones) near Hollister, San Benito County, California. | 
             
          
         
        
        
        
        
        
          
            
             
             
              | https://gotbooks.miracosta.edu/rocks/metamorphic/18.html | 
              2/2/2021 | 
           
            
              
          
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