24 



NOTES ON THE GEOLOGY 



LOWER BARREN GROUP. [BARREN MEASURES.] 



An approximate section of this gronp is as follows : ^ , 



1. 



Shale with iron, 



14 feet. 



2. 



Limestone, 



2—4 " 



d. 



Coal, 





4. 



Shale, 



3 feet. 



5. 



Sandstone, 



25 " 



C. 



Shales, • 



8 " 



7. 



Limestone, 



3 " 



8. 



Shale with iron, 



41 " 



9. 



Limestone, 



H " 



to. 



Shales and shaly sandstone. 



22 " 



11. 



Limestone, 



11 " 



12. 



Shale, 



18 •' 



13. 



Gold, 



11-2 " 



14. 



Sandstone, 



10-25 " 



15. 



Card, 



8 in.-li " 



16. 



Ijimestoiie, 



8 " 



17. 



Shales olive, 



10 " 



18. 



Limestone, 



3 " 



19. 



Shale olive, 



12 " 



20. 



Sandstone, 



40 " 



21. 



22, 



Conglomerate. 

 Sandstone, 



0—6 " 

 15 " 



23. 



Goid, 



31-4 " 



24. 



Shales variegated with some shaly 





sandstone, 



331 " 

 1-4 " 



25. 



Sandstone, 



26. 



Shale, calcareous and fossiliferous. 



2—4 " 



27. 



Shale, variegated, fossiliferous, 



24 " 



28. 



Coal, 



Limestone, 



4 in.-li " 



5 " 



29. 



30. 



Shales, variegated with iron, 



20 " 



31, 



Sandstone, 



10-20 " 



32 



Shales witli iron, 



10-15 " 



Interval rocks 16 — 18 feet. 



■ Interval rocks 86| feel. 



Interval rocks 10 — 25 feet. 



Interval rocks 88—94 feet. 



Interval rocks 60^ to 65A feet. 



Interval rocks 45— 60 feet. 



Coals. The coals of this group are, for the most part, of little interest, and none 

 appear to be of economical importance. 'No 3 is seen on EoMnson's and Scott's runs, 

 reaching occasionally a thickness of two feet, and yielding a coal of excellent quality. 

 It has been worked in one or two instances where the owner Avas ignorant of the 

 proximity of the Pittsburgh coal. ISTos. 13 and 15 are never of available thickness ; 

 though I have been informed that, at one point below the mouth of Scott's run, along 

 the river, No 13 expands to twenty inches. No 15 is about as bad a coal as one often 

 sees, its outcrop, where protected by projecting rock, being coated with crystals of 

 cojDperas, 



No 28, which may l^e the equivalent of the Elk Lick coal, is exceedingly variable 

 in size and appearance. At the " Hog Back" on Decker's creek, one mile from Mor- 

 gantown, it varies from ybwr to twelve inches in thickness within one hundred feet. It 

 breaks into small blocks, an inch or two each way, and bears much resemblance to an 

 imperfectly formed canneL At some points it is slaty, at others entirely free from 

 any such structure. Many years ago it was opened two miles south from Morgan- 

 town, near the poor-house. There it is nearly twenty inches thick and of very poor 

 quality — a richly bituminous shale, of the kind usually termed " cannel coal," by cour- 

 tesy. 



