TENNESSEE 141 



Feet. Inches. Feet 



16. Heavy bedded sandstone 40 to 45 



17. Mostly shale 117 



18. Rockwood coal bed [Sewanee] 3 to 4 



19. Fireclay, shale, and shaly sandstone 18 to 27 



20. Coarse to fine and pebbly sandstone, heavy 



bedded, with 3 beds of shale ; in all, 18 



feet 154 



21. Ferny shale 40 



22. Coal bed [Soddy] * 3 to 4 



23. Heavy bedded sandstone, mostly conglom- 



erate [Etna, Cliff] 140 to 150 



24. Clay and sandy shale 180 



25. Sandstone 25 



26. Gray ferriferous shale 170 



27. Sandstone 85 to 100 



28. Shales 150 to 200 



The whole of this section belongs to the Pottsville. With the Corbin, 

 which is the Sharon sandstone, one reaches once more the beds equiva- 

 lent to the northwest Pennsylvania section, of which it is. the bottom. 

 No attempt at identification of the higher beds is attempted here, but, 

 as Harriman is on the border of the area showing greatest thickness, 

 one should find at a short distance northwest not less than 1,000 feet of 

 Pottsville above the Corbin (Sharon) sandstone. The thickness of Cor- 

 bin here is practically the same as in Mr Hayes' Rockwood section. 

 The Bonair in number 20 can not be separated sharply from the over- 

 lying and underlying sandstone beds, which replace much of the shales. 

 The coal bed number 22 can hardly be the coal bed of Mr Hayes' Rock- 

 wood section at 155 feet below the Sewanee; it is more nearly in the 

 place of the Soddy, which rests on the Etna conglomerate. The identi- 

 fication of number 23 with the Etna conglomerate agrees with that of 

 Professor Bradley, who says that the Etna coal bed is at 15 feet below 

 it. A 2-foot coal bed has been opened in number 24, but its exact posi- 

 tion is not given in the extract from which the section was copied. The 

 thickness of measures below the Etna (Cliff) conglomerate is 643 feet, 

 and the whole thickness of the Lookout, including what may be taken 

 as the Bonair proper, is about 925 feet. From this should be taken 

 probably 100 feet at the bottom belonging to Campbell's Pennington 

 (Shenango) shales, so that the thickness may be taken approximately 

 at 800 feet. 



The coal at Rockwood and Harriman is badly contorted. Messrs 

 Killebrew and Safford say that the bed at Rockwood dips 35 degrees 

 northwest, and " is remarkable for the immense curled masses of coal 



XIX— Bull. Geol. Soc. Am., Vol. 15, 1903 



