.0                                                                              
                                                                                
                                                                                
                                                                                
     FOLD LINES--General locations of major folds shown where space             
       allows.  Dotted where concealed                                          
                                                                                
                                                                                
         ANTICLINE                     OVERTURNED SYNCLINE                      
                                                                                
         SYNCLINE                      MONOCLINE                                
                                                                                
      VOLCANIC CINDER CONE OR CRATER (AGE <1.8 M.Y.)--In Costilla and           
         Eagle Counties                                                         
                                                                                
      VOLCANIC NECK (AGE 7-10 M.Y.)--In southern Routt County                   
                                                                                
                                                                                
      DIATREME (PRE-UPPER DEVONIAN, POST-MIDDLE SILURIAN)--In northern          
        Larimer County