THE BUILDING OF THE COLORADO ROCKIES 233 



No. I. Lyons sheet (westernmost 7 miles) ^^'^^ 



Length following base of Dakota sandstone 7 . 80 



Present horizontal length 7 . 00 



Shortening .80 



No. 2. St. Vrain sheet • 



Length following base of Dakota sandstone 10.91 



Present horizontal length 10.00 



Shortening .91 



No. 3. Allen's Park sheet 



Length following base of Dakota sandstone 10.805 



Present horizontal length 10.00 



Shortening .805 



No. 4. Continental Divide sheet 



Length following base of Dakota sandstone . . ' . . . 10.89 



Present horizontal length 10.00 



Shortening .89 



No. 5. Granby sheet 



Length following base of Dakota sandstone 11. 085 



Present horizontal length 10.00 



Shortening 1085 



No. 6. Sulphur Springs sheet 



Length following base of Dakota sandstone 10.65 



Present horizontal length 10.00 



Shortening .65 



No. 7. Troublesome sheet 



Length following base of Dakota sandstone 10 -45 



Present horizontal length 10 . 00 



Shortening .45 



No. 8. Gore Range sheet 



Length following base of Dakota sandstone 10.275 



Present horizontal length 10.00 



Shortening .275 



No. 9. State Bridge sheet 



Length following base of Dakota sandstone 10.635 



Present horizontal length . 10.00 



Shortening .635 



