NWD-1400: Zdlt - Dacitic lavas and tuffs
NWD-1400: Handsample photograph of welded tuff.
 

NWD-1400: Closeup photograph of welded tuff from handsample above.

 


 
 
 
 
 
     
 
         
NCGS, 1612 Mail Service Center, Raleigh, NC 27699-1612       919-733-2423      Fax 919-733-0900      
NCGS Home Link