BELLE FOURCHE SECTION. 

 31 Dakota sandstone 



Ft. 

 180+ 



j Olive-green clay. ... 70 



I e \ 



Yellow - green clay 

 with small concre- 

 tions 12 



I Maroon clay 10 



I Green clay 6 



I Limestone concre- 



< tions I 



I Green clay 6 



Maroon clay with 



small concretions . 6 

 Green clay with small 



concretions 10 



I Limestone concre- 



< tions I 



/ Green clay 4 





M 



Limestone concre- 

 tions 1 



Green clay 6 



Soft yellow sand- 

 stone 2 



Green clay 7 



13 Soft yellow sand- 

 stone 



INYAN KARA CREEK 

 SECTION. 



Ft 

 Dakota sandstone... 80+ 



Olive-green clay. . .. 40 



Light green clay .... 12 

 Maroon clay with 



small concretions . i o 

 Green clay with 



small concretions . 5 



Red clay 5 



Green clay s 



Maroon clay 6 



Green clay 20 



Limestone concre- 

 tions I 



Yellow sandstone . . . 

 Dense gray sand- 

 stone 



Yellow sandstone . . 5 

 Limestone concre- 

 tions I 



Yellow sandstone ... 12 



Limestone concre- 

 tions I 



Green clay 8 



Gray sandstone 2 



Green clay with 



nodules 6 



Soft sandstone 10 



Gray sandstone 4 



Olive clay s 



Sandstone with 



shells 2 



Olive clay . s 



Sandstone with 



shells 2 



Olive clay 5 



Gray sandstone 2 



Olive clay 1+ 



SHELDON P. O. 

 TION. 



Dakota sandstone . . 



SEC- 



Ft. 

 so-l- 



Olive-green clay. ... 30 



Limestone concre- 

 tions I 



Green clay 10 



Maroon clay s 



Yellow-green clay. .. g 



Red clay 5 



Lirnestone concre- 

 tions 



Green clay 8 



Limestone concre- 

 tions : 



Red clay 3 



Green clay 12 



Limestone concre- 

 tions I 



Green clay 12 



Gray sandstone 2 



I 

 12 -! 



D 8 



f Green clay weather- 

 ing brown 



Limestone concre- 

 tions 



Green clay weather- 

 ing brown 



Gray sandstone .... 



Green clay 



f Gray sandstone 



Green clay 



Gray sandstone 



- Green clay 



Gray sandstone. 



Yellow -green clay. .. 2 



Soft sandstone 10 



I 

 4 i 



Green clay 



.Gray sandstone. 



Sandy clay 



Shell limestone . 

 f Sandy clay 



f Green clay with 

 Belemnites densus 



Olive-green clay 



with nodules 35 



Concretions . i 



Olive-g^een clay with 

 nodules 12-f 



20-|- 



Total 271-I- 



,191-f 



.159+ 



NoTE. — Numbers in heavy type indicate that the layer can be recognized in the 

 centre of Wyoming 



[406] 



