Laserfiche WebLink
3.8.3 Bedrock <br /> Bedrock was previously mapped in the area as the Upper Member of the Pierre Shale <br /> Formation. Bedrock encountered in the area typically consists of sandstone and claystone. <br /> Bedrock information for this area was determined from the Geologic map of the Boulder- <br /> Fort Collins-Greeley area, Front Range Urban Corridor, Colorado(USGS MI 855-G), <br /> GEI Consultants,Inc. 11 June 2014 <br /> Three Bells Mine Reclamation Permit Amendment <br />