FORMATION PRODUCTS 



'-' pleistocene En^SrarsrEffi^ . , GOU . ■■■ in .: .. ^ 



VOLCANIC ASH 



OLIGOCENE 





FULLERS EARTH 

 VOLCANIC ASH 



NIOBRARA 



CARLILE 

 GREENHORN 



PfisSS* 



MINNEWASTA 

 LAKOTA 



.MORRISON 

 UNKPAPA 

 SUNDANCE 



IT? SPEARFISH 



:-~--^ ^^>j .- j_. 



PETROLEUM 



BUILDINGSTONE 

 FIRECLAY 

 BUILDING STONE, 

 COAL 



BUILDINGSTONE 



1 GYPSUM 

 --J LIME, CEMENT 



PAHASAPA 



DEADWOOD 



ALGONKIAN 



GOLD. SILVER, 

 LEAD, LIME 



GOLD. SILVER LEAD, 

 TIN,COPPER,IRON, 

 TUNGSTEN, MICA, 

 LITHIA.GRAPHITE 



@F THE 



dl^AeKHMLlua REGION 



""»" ■"•■:-••- -■ 



