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 FIGURE 8 EXPLANATION 



1. Limestone - light gray, argillaceous, shaly; very fossiliferous in places, 

 numerous Rhipidomella carbonaria (Swallow), pelecypods, gastropods, and 

 shark's teeth. 



2. Shale - dark gray; thin coal seams. 



3. Coal - soft, irregular in thickness. 



4. Clay - gray to light gray, unbedded, pyritic, carbonaceous near top. 



5. Shale - red and gray mottled; contains red and gray limestone concretions; 

 gray, sandy, micaceous layers mostly near top. 



6. Shale - red; contains limonite concretions. 



7. Shale - greenish gray, silty; contains limestone nodules; contains some red 

 shale layers . 



8. Shale - red with greenish gray mottling. 



9. Limestone - light gray to brownish gray, algal, very nodular with greenish 

 gray interbedded clay; contains abundant brachiopods and crinoid columnals; 

 pyrite present on upper surface. 



10. Limestone - gray to brownish gray, dolomitic, massive, biocalcarenitic. 



11. Limestone - brownish gray to gray, algal, massive, vuggy, nodular in places, 

 finely brecciated. 



12. Limestone - gray to greenish gray, dense to crystalline, algal, interbedded 

 with greenish gray shale; contains gastropods, crinoid remains, and abundant 

 brachiopods . 



13. Limestone - gray to brownish and greenish gray, dense to crystalline, algal, 

 nodular, brecciated with shrinkage cracks; brachiopods common. 



14. Shale - greenish gray grading to dark gray downward, poorly laminated, 

 calcareous; brachiopods abundant. 



15. Shale - black, fissile to blocky, pyritic; contains some plant remains, as 

 well as fish scales, linguloid and orbiculoid brachiopods, and abundant 

 conodonts . 



16. Clay - dark gray to black at top grading downward to gray in upper two feet; 

 contains considerable plant debris; 1- to 2-inch discontinuous limestone bed 

 6 inches to one foot below top; 3-inch coal seam 60 inches below top. 



17. Limestone - upper ledge gray to greenish gray, dense, algal, fossiliferous; 

 middle ledges brownish gray to greenish gray, algal, nodular, interbedded 

 with greenish gray clay; lower ledge buff to brown, dolomitic, vuggy, and 

 crystalline. 



18. Shale - greenish gray. 



