
            
            By: magic-gigapans
            
              Image: Robin Rohrback, Mid-Atlantic Geo-Image Collection
                
            
            
              License:
                 Creative Commons Non Commercial ⧉
              
            
          
            Uploaded: 29 Apr 2020
            Last Updated: 27 May 2020
          
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Stromatolites in the Helena (Siyeh) Formation limestone, which is part of the Mesoproterozoic-aged Belt Supergroup.