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SEDIMENTARY AND IGNEOUS ROCKS OF EARLY TERTIARY AND LATE CRETACEOUS AGE         
                                                                                
TKda   DENVER AND ARAPAHOE FORMATIONS--Sandstone, mudstone, claystone, and      
         conglomerate; Denver is characterized by andesitic materials           
Tdv    BASALTIC FLOWS IN DENVER FORMATION NEAR GOLDEN (AGE 62-64 M.Y.)          
TKdl   DENVER FORMATION OR LOWER PART OF DAWSON ARKOSE--Arkosic sandstone,      
         shale, mudstone, conglomerate, and local coal beds                     
TKr    RATON FORMATION--Arkosic sandstone, siltstone, and shale; contains       
         major coal deposits in Raton Basin