15. Compact,steel-gray limestone , 
ft 
Ft. in. 
0 6 
16. Bluish-gray limestone, breaking u p into shaly 
layers that break into irregular fragments, 4 4 
17. Compact.steel-gray limestone, 0 7 
18. Bluish-gray limestone,compact, 1 l 
19. Bluish-gray,compact limestone, 2 4 
• ** 
20. Bluish-gray limestone.breaking up into thin 
layers that break into angular fragments, 8 8 
- 
21. Compact,steel-gray limestone .with more shaly 
layers in places, 6 0 
22. Compact,steel-gray limestone.weathering buff ,and 
banded, 1 7 
2o. Compact .steel,and bluish-gray limestone.in 8 
layers p 0 
24. Shaly,blue limestone, 
25. Compact.steel-gray limestone.weathering buff 
and handed. 
0 
2o. Bluish-gray limestone,shaly below on weather¬ 
ing,and breaking with conehoidal fracture, 4 
27. Compact.blue-gray limestone, i . - 2 
10 
6 
0 
28. Gray limestone,softer'than any preceding (4 
layers) ' 2 0 
29. Shaly limestone, p 0 
80. layer of bluish-gray, shaly limestone, 1 8 
81. Compact .gray limestone.decomposing in the 
• margins to a buff-colored rock." Contains 
considerable iron pyrites, 4 z 
