242 GEOLOGY OP OHIO. 



LOCAL GEOLOGY. 



Jackson Township. — In this township the section is as follows : 



FT. IN. 



1. Shale 35 



2. Limestone 4 



3. Shale 8-10 



4. Coal No. 4 4 to 8 



^ Clay 12 



.limestone 2 



7. Flint and iron ore 3 



8. OoalNo.3 2 9 



9. Sandstone 75 



10. CoalNo.2 1-2 



11. Sandstone and shale 50 



12. CoalNo.l 2-4 



13. Fire-clay 5 



14. Shale 30 



15. Iron ore 2 



16. Shale 5-10 



17. Conglomerate 28 



18. Calcareous iron ore 4 



19. Nodular iron ore 2 



20. Sandstone 27 



Coal No. 4 is here of economical thickness, and in the neighborhood of 

 Frazeysburg is worked at several openings. At Mr. Samuel McCann's 

 bank the section is : 



FT. DJ. 



Coal 2 



Shale 4 



Coal 2 5 



Fire-clay 1 



At the end of the entry the thickness is only eighteen inches. The 

 coal is cannel, containing many thin seams of bitumen, and near the 

 top, one of bituminous coal, two and one-half inches thick. It burns 

 beautifully, but leaves a very bulky ash. /A specimen forwarded for an- 

 alysis gives the following result : 



Specific gravity 1.305 



Moisture 2.60 



Volatile oombustihle matter 37.00 



Fixed carbon 54.95 



Ash 5.45 



Total 100.00 



