32 



THE WHITE RIVER BADLANDS 



Table of Geologic Divisions for Western South Dakota 



Cenozoic 



Mesozoic 



Quaternary- 



Tertiary 



Cretaceous 



Jurassic 

 Triassic 



f Recent alluvial (flood 



plain) deposits. 

 i Older high - level 

 I gravels, sands and 

 I clays. 



Pliocene 



Miocene 



Oligocene 

 Eocene 



? Lance Formation 



Laramie 



Fox Hills 



Pierre 



Niobrara 



Carlile 



Greenhorn 



Graneros 



Dakota 



Fuson 



Minnewasta 



Lakota 



Morrison 



Unkpapa 

 Sundance 



Spearfish 



j Not sub- 



1 divided. 



[Nebraska 



-{ Beds 



| Sheep Creek 



I Beds 



I Arikaree 



j Brule 



I Chadron 



S Ft. Union 



Paleozoic 



Proterozoic 

 Archeozoic 



r Carboniferous 

 Permian 



Pennsylvanian 



Mississippian 

 Devonian 



Silurian 



Ordovician 

 Cambrian 

 (Saratogan) 



Algonkian 



Minnekahta 

 Opeche 



Minnelusa 



j Pahasapa 

 ( Englewood 

 [Not represented?] 



[Not represented?] 



Whitewood 

 Deadwood 



Not yet differentiated 

 [Not represented] 



