﻿1 6 Bulletin 19 66 



kany s. s. horizon giving the same appearance to the bluff as 

 shown by the Coeymans and a cement bed in the Helderbergs. 

 See Plate 9. 



2. Oriskany sandy layer .3 



3. Helderbergian limestone 18.0 



In the middle and upper portions are found : Merislella Icevis 



A. reticularis, Stropheodonta planulata, Spirifer vanuxemi? 

 var. , and Uncinulus sp. At base occur : Meristella Icevis, Stro- 

 pheodonta varistriata, Tentaculites gyracanthus, Beyrichia, and 

 a Leptoccelia. 



4. Stromatopora k^yer 8.0 



5. Blue layers, somewhat Stromatoporoid above with Sp. 

 vanuxemi 15.0 



6. Gray limestone 4.0 



7. Blue limestone 3.0 



8. Gray and blue banded 7.5 



9. Thin blue layers 8.0 



10. Limestone more or less Stromatoporoid 3.0 



11. Thin gray limestone beds 2.5 



12. Dark, Stromatoporoid, cherty 13.0 



13. Bluish limestone 3.0 



14. Fossiliferous limestone, crinoid stems, Leperditia, St. 

 varistriata, Sp. vanuxemi, Beyrichia, Bythocypris 2.5 



15. Blue limestone 7.0 



16. Solid limestone beds 1 to 2 ft. thick with Sp. vanuxemi 

 occasionally. One Meristella observed 10.0 



Section along L. V. R. R. 1 — iyi miles N. of Perryville 



Ft. Thick 



1. Helderbergian fragmental limestone 13.0 



2. Stromatopora bed 8.0 



3. Blue limestone 1.0 



4. Blue limestone, much cracked 8.0 



5. Solid blue layers ; Stromatoporoid at top 13.0 



6. Gray cement rock 3.0 



7. Blue, cracked 7.0 



8. Stromatoporoid limestone 3.0 



9. Blue limestone 1.0 



10. Gray shaly limestone 2.5 



11. Stromatoporoid limestone 15.0 



12. Dark, cracked, cherty, thin bedded limestone 15.0 



13. Crystalline and rough weathering limestone ; with Sp. 



