242 ANTHRACITE COAL MEASURES, 



Table showing the Order, Character, and Maximum Thick- 

 nesses of the Lower Secondary Formations of Pennsylva- 

 nia, east of the Susquehanna. 

















Coal Measures, consisting of seams of Coal, 

 cious Conglomerates. 

 (Vegetable Fossils.) 







zr-,^~=r=r. r.~- ;■ ; ----- -i. ; 







OOOJQOJ.P^ » q p o P o f c c: O <■ 





fcll 



Woo 





Silicious Conglomerate. 









Red Shale. 



Thin calcareous Conglomerate 



AS 







X 



2oco 





Sandstone and Conglomerate. 

















Red Shales and Red Grav and B ff c 1 









oured Argillaceous Sandstones".' 



IX 



8oao 















A few marine fossils. 

















Olive-coloured Slate and Gray Argillaceous 

 Sandstone. 















ym 









%ooa 





Many Marine Fossils. 

 Limestone. 



viT 



TOO 





Coarse white Sandstone. (Cavities of fossils.} 



VI 



900 





Blue Argillaceous Limestone (fossils). 



V 



20P0 





Red and Variegated (fossiliferous iron ore). 

 Shales and Sandstone (fucoides). 



TV 



Woo 





White Sandstone (fucoides). 









(Roofing Slates.) 









w 



Soon 





Dark Slate and Argillaceous Sandstone. 



(A few fossils.) 



Bed of Limestone. 



II 







Bine Limestone. 

 Beds of chert. 

 (A few fossils.) 



I 



t HOC,' 



!§((:^p?:^\£^^^ • V:'-V Compact White Sandstone. 







Gneiss, &c. 



