99 



A Column of the Silurian Rocks of the State of New York, with the Old 

 Red Sandstone of New York and Pennsylvania, and the Coal Measures 

 of Pennsylvania above them {in a descending series,) as reported by Pro- 

 fessor Emmons and Messrs. Hall & Vanuxem, in their Geological Re- 

 ports of 1840, with additions, SfC, 6fC. 



TABLE IV. 





Localities. 



Coal Measures, 



Pennsylvania. 



Coal, 





Conglomerate, 





CatSklll IxrOUp, CatsMU Mountains, N. Y. 



Old Red Sandstone, Blossburgh, Pennsylvania. 



( Montrose Sandstone or Sandstone ) 

 } of Oneonta. t 



1st of the Silurian Series. 

 Chemung Group, 



Sherburne Flagstone, 

 Black Shale, 



2nd Ithica Group, 



Seneca Slate, Seneca County. 



3d Portage Group, 



Portage Sandstone, 

 Garden Flagstone, 

 Cashaqua Slate, 

 Genesee Slate, 

 Tully Limestone, 

 Moscow Shale. 



|4th Hamilton Group, 



Marcellus Shale, Seneca Co., Waterloo, Avon. 



Onondaga Limestone, Vienna, Phelps. 



Schoharie Grit or Layers, 



Caudigali-Grit, Clarksville, Albany Co. 



Corniferous Limestone, BlackRock, Erie Co., Helderberg. 



Oriskany Sandstone, Phelps, On t.co.,Oriskany,Oneidaco. 



Catskill Shaly Limestone, Helderberg Mts., Catskill Mts. 



Pentamerus Limestone, 



Skeneateles Shale, 



Seneca Limestone, Seneca Falls. 



Scutella Limestone, 



Delthyris Shaly Limestone, 



5th Water Lime Group, 



Magnesian Striations,; Monroe Co. 



(Lignihtes of Eaton,) i Helderberg Mts. 



6th Onondaga Salt Group. 



7th Niagara Group, 



Limestone and Shale. 



