EQUIVALENT FORMATIONS. 289 



An original Table, showing the equivalent Formations 

 below the Coal Measures in the Rock Strata of Eng- 

 land, and the States of New-York and Pennsylvania, 



Formations of England. 



Coal Measures. < 



Up. Lud- 

 low rock. 



Ayemestry 

 ^ limestone. 



Low. Lad- 

 low rock. 



( 



LSI 



Dudley and 

 Wen lock 

 limestone. 



Wenlock 

 shale. 



f Flags. 

 | J I Sand- 

 | | { stones. 

 ^ | | Lime- 

 P*< (stones. 

 ^ ss ( Calcare- 

 ^ \§ j ous flags. 

 1 1 { Sand- 

 4 £ j stone and 

 _ Hk < Uchist. 

 Cam- < Clay slate 

 brian S. \ system. 

 Gneiss. 

 Granite. 



Formations of New- York. Formations of Pennsylvania. 



Conglomerates. 

 Sandstone of Cats- 

 kill Mountains.* 



Pyritiferous slate. 



Shales of superior 

 series. 



Gray sparry crinoi- 

 deal limestone. 



Onondaga lime- 

 stone. 



Red Sandstone. 



Sandstones and 

 shales of Salmon Ri- 

 ver, t 



Blue limestone and 

 shales of Trenton 

 Falls. 



Sparry limerock of 

 the Mohawk. 



Bastard limestone. 



Sparry limerock— 

 (Eaton.) 



Calcareous sand- 

 stone of Mohawk 

 Valley. 



Calciferous sand- 

 rock of Eaton. 



Graywacke and 

 slate of Hudson Riv- 

 er. 



| Clay slate system. 



Gneiss. 

 Granite. 



z 



Anth.Coal meas- 

 ures^ 13) Conglom- 

 erates & shales.(12) 

 Red shale.(ll) 

 f Sandstone and 

 J conglomerates^ 10) 

 j Red sandstones 

 (and shales.(9) 

 Olhe-coloured 

 slate.(8„) 



Sandstone. (7) 

 Blue limestone. 

 Calcareous shale 

 { formation.(5) 



Sandstones and 

 conglomerates of 

 Kittatinny.(4) 

 Slate ofKittatin- 

 Uy Valley.(3) 



r 



Limestone of Kit* 

 tatinny Valley.(2) 



White and gray 

 Sandstones.(l) 



| Clay slate system. 

 Gneiss. 

 Granite. 



