530 GEOLOGICAL SURVEY OF THE TERRITORIES. 



^K. 



Feet. 



10. Dark laminated clays, burnt reddish in places 5 ") 



11. Light-colored sandy clays, passing into bluisb-white ! j 



sandstone 25 f ' 



12. Heavy bedded reddish and gray sandstone, Ostrea. . 30 to 50 3 



13. Light grayish and sandy clays and shales with seams 



of brownish sandstone, (estimated) 350 ^ J. 



14. Valley, perhaps 30 to 50 feet ; strata unseen. 



15. Light and dark-colored shales, with probably some 



thin seams of coal 80 



16. Light drab-colored shales with some carbonaceous 



seams, and some tb in-bedded, ripple-marked gray- 

 ish sandstone 64 



17. Bluish and grayish laminated clays with some car- 



bonaceous seams, and some thin-bedded sandstone 



layers in uppermost part 75 



18. Reddish brown and grayish sandstone 8 



19. Bluish and grayish laminated clays with some car- 



bonaceous layers 26 



20. Grayish sandstone, weathering brownish 4 



21. Ash-colored sandy clays and shales 12 



22. Brownish sandstone 3 



23. Light sandy shale 2 



24. Impure coal or dark carbonaceous shale 2 



25. Carbonaceous and grayish shales or clays 24 



26. Bluish gray concretionary sandstone 1 4 



27. Arenaceous shales or clays 14 



28. Grayish and carbonaceous shales; appearance of 



ct>al . . -' 8 



29. Bluish arenaceous shales or clays 13 



30. Laminated bluish white sandstone and sandy shale. 20 



31. Gray sandy shale 3 



32. Heavy bedded coarse sandstone, whitish in upper 



portion, and brownish buff below 130 \ 



No. 1 of this section shows signs of having been much disturbed 

 locally. In one or two places I noticed a local dip to the south or south- 

 west. This may, perhaps, be due to a slipping of the beds on each other. 

 This disturbance, in connection with that observed at Hallville, here- 

 after to be mentioned, suggested the possibility that the apparent uucou- 

 formability between these beds and those of the previous section might 

 in reality be due to a faulting of the strata, with lateral twisting, 

 although the appearance as far as our examination extended, seemed to 

 favor tlie contrary view. I am inclined to accept this as the true 

 explanation of the appearance as nothing in the character of the rocks 

 themselves, and in the contained fossils, shows any such decided change, 

 as might be expected with such an evidence of difference of epoch. 

 Apparently the same oyster and a peculiar vegetable impression 

 (already noted as seen in the rocks at Carbon and Fort Steele) were 

 found in several of the sandstone layers above and below the disturb- 

 ance. 



The dip of the heavy sandstone No. 32, at the base, and also at the 

 westei'u end of the series, was nearly due east, and not over 6°, while, 

 ©wing to the local disturbance, that of the uppermost bed, at the east- 

 ern extremity, was southeast, and nearly 20°. In the intermediate beds it 

 would scarcely average over 5° or 6°, with a direction a little south of 

 east. There ai)peared throughout to be numerous local changes as to 



