Black 

 Hills 



Bighorn Casper Hartville Laramie Northern Westof GarOen of Arkansas 



Mountains Range Uplift Range Colorado Denver The Gods Valley 



EXPLANATION 



Sundance 

 [MarineJur^Ssic) 



Limestone. sandy- 



Sandstone, white, grey, buffjand brown 

 Red. sandy shale = 



^■,L)':,J>- ;>V^ 



Red sandstone and conglomerate 



Granite and achist 



Gypsum in large deposits 



o c?o 



?''= Fossils 

 C= Cambrian 



Top of Mississippian 

 E= Exeter sandstone? 



Englewood 

 Wh.tewood J 

 iOraoviaan) \ 



1000 Feet 



Chart of Columnar Sections of Carboniferous and "Red Beds" in the western part of the Plains Province. From Darton. 

 This chart gives Darton 's correlation of the beds, the author's exceptions are noted in the text. 



