596 



COAL MEASURES OF MARYLAND 



Plate 15. — Sections of Allegheny and Pottsville Formations 



Numbers indicate members. Different numbers are assigned to the coals 

 called the Upper Kittanning in the eastern and western sctions ; * indicates 

 fauna ; Cmc — Mauch Chunk ; Cio — Poeono ; Cgr — Greenbrier. 



46. 

 45. 

 44. 

 43. 

 42 



41. 

 40. 

 89. 

 38. 

 37. 

 36. 

 35. 

 34. 

 38. 



32. 

 31. 



80. 

 29. 



28. 

 27. 



26. 



Upper Freeport coal. 



Bolivar fireclay. 



Upper Freeport limestone. 



Upper Freeport sandstone. 



, Middle Freeport coal. "Lower 

 Freeport coal," Barrelville coal 

 in Maryland. 



Middle Freeport limestone. 



Middle Freeport sandstone. 



Lower Freeport rider coal. 



Lower Freeport coal. 



Lower Freeport limestone. 



(Lower) Freeport sandstone. 



Montell rider coal. 



Montell sandstone. 



Upper Kittanning coal east of 

 Freeport. 



Little Montell coal. 



Johnstown iron ore — Mount Sav- 

 age iron ore in Maryland. 



Johnstown limestone. 



Hardman fireclay, ''Furnace clay" 

 in Maryland. 



Piney Mountain coal. 



Upper Kittanning coal at Free- 

 port and westward. 



Upper Kittanning limestone. 



24. 

 23. 

 22. 

 21. 

 20. 

 19. 

 18. 

 17. 

 16. 

 15. 

 14. 



13. 



12. 



11. 

 10. 



9. 



8. 



7, 



6. 



5. 



4. 



o 

 .J. 



2. 

 1. 



Westernport sandstone. 



Middle Kittanning coal. 



Middle Kattanning fireclay. 



Ellerslie sandstone. 



Lower Kattanning rider coal. 



Lower Kittanning coal. 



Lower Kittanning fireclay. 



"Ferriferous" coal. 



Vanport limestone. 



Mount Savage sandstone. 



Scrubgrass coal. 



Clarion coal — Upper Mount Sav- 

 age coal in Maryland. 



Clarion fireclay — Mount Savage 

 fireclay in Maryland. 



Brookville coal — Lower Mount 

 Savage coal in Maryland, 



Homewood sandstone. 



Upper Mercer shale and fauna. 



Upper Mercer coal. 



Lower Mercer coal. 



Upper Connoquenessing sandstone 



Quakertown shale and fauna. 



Quakertown coal. 



Lower Connoquenessing sandstone. 



Sharon coal. 



Sharon sandstone. 



Coal. 



Note. — The members of the Pottsville, in the sections described, are subject 

 to much variation. The correlation indicated is tentative. 



