﻿75 Helderbergs 25 



East of the road, behind a barn we note: 



Ft. Thick 



1 . Coe ymans 15+ 



2. Transition beds 2 



3. Rough, Stromatopora bed 8 



4. Blue, shaly limestone 2 



5 . Covered 3 



6. Shaly 2 



7 . Cement rock 2 



8. Hard blue 3 



9. Blue, shaly 1 



10. Hard blue 4 



11. Blue, shaly 1 



12. Hard limestone 2 



13. Covered 28 



Just below this covered zone the Hudson River beds crop out. ' 

 Springs are numerous along this line of contact. 



Farther east, near the base of the escarpment where the first 

 spring west of Indian Ladder flows . from under the rocks, 

 we measured the following section. 



Section % mile W. of Indian Ladder, {below the Coeymans limestone). 



Ft. Thick 



1. Transition layers 2.0 



2. Blue limestone .6 



3 . Stromatopora bed 3.1 



4. Blue limestone beds 6.0 



5. Buff, shaly, or cement beds 3.0 



6. Stromatopora beds 9.0 



7. Blue limestone, thick and thin layers 3 2 -9 



8. Gypsum 1.5 



9. Gray, shahy layers .5 



10. Hudson River s. s. and shale 



At the ' 'ladder' ' or only a few hundred feet to the west there 

 is a better exposure of the basal beds represented in the last sec- 

 tion . In fact there are four or five feet of gypsiferous and 

 pyritiferous shales, resembling in many ways the Salina beds 

 beneath the Cobleskill at Howe's Cave. 



