46 



TITANOTHEEES OF ANCIENT "VA^yOMING, DAKOTA, AND NEBRASKA 



1. Sweet Grass County, Mont. Fort 



Union formation. 



2. P. T., San Juan Basin, N. Mex. and 



Colo. Puerco and Torrejon forma- 

 tions and "Tiffany beds." 



3. W., near Evanston, Wyo. Typical 



Wasatch group. 

 4 Big Horn Basin, Wyo. Wasatch for- 

 mation. 



5. W. R.. Wind Eirer Basin, Wyo. 



Typical Wind River formation. 



6. Beaver Divide, Wyo. Eocene and 



Oligocene section. 



7. H., Huerfano Basin, Colo. Typical 



Huerfano formation. 



8. B., Bridger Basin, Wyo. Typical 



Bridger formation. 



9. W. K., Washakie Basin, Wyo. Typi- 



cal "Washakie formation" of Hay- 

 den. 



10. U., Uinta Basin, Utah. Typical 



Uinta and older Eocene deposits. 



11. Wh. R., White River, S. Dak. Typi- 



cal White River group. 



12. Powder River and Pumpkin Buttes, 



Wyo. Fort Union and Wasatch 

 formations. 



13. F. U., Fort Union, N. Dak. Typi- 



cal Fort Union formation. 



14. P., Red Deer River, Alberta. Paska- 



poo formation. 



Oligo 

 Oligocene flood plain 



Figure 35.— General geologic sketch map of the Rocky Mountain region, showing existing topography and drainage areas and 



their relation to areas of Eocene and lower Oligocene sedimentation 

 Each of the numbered areas e.'cccpt 13 and 14 is also represented in geologic section in this chapter. Topography after the United States Geological Survey, 1911 



(See tables on pp. 48, 57, .=.8.) 



