TENNESSEE 125 



Mr Hayes gives a section obtained near the Etna mines, which differs 

 somewhat from those by Safford and Colton. It is 



Feet. Inches 



1. Sandstone 75 



2. Shale and sandstone 120 



3. Coal bed, Etna 4 



4. Shales 50 



5. Trace of coal 



6. Shales and sandstones 120 



7. Sewanee (?) coal bed 1 6 



8. Shale and some sandstone 70 



9. Soddy (?) coal bed 1 2 



10. Sandstone and shale 25 



11. Conglomerate and massive sandstone 80 



12. Castle Rock coal bed 3 



13. Shale 30 



14. Trace of coal 



15. Shale. . 65 



16. Dade coal bed 3 



17. Shale 20 



18. Mostly concealed 250 



to the Lower Carboniferous. 



The top of the Lookout here, number 11, is the Cliff sandstone of Saf- 

 ford and Colton, which will be referred to hereafter as the Etna conglom- 

 erate, for along the eastern escarpment in Tennessee, as well as in much 

 of Alabama, it is as important as the Bonair or Main conglomerate of 

 Safford. The " Castle Rock " coal bed of this section is the Main Etna 

 coal bed of Safford, the Cliff vein of this region and Alabama, the Castle 

 Rock of Georgia. The bottom of the sandstone at the top of the section 

 is almost 400 feet above the Etna (Cliff) conglomerate, and it is evidently 

 the same with that of the other sections, in which it is at about 360 feet. 

 The Etna coal bed of this section is evidently the Slate bed of Safford, 

 the number 5 of Colton, which should be at somewhat less than 50 feet 

 above the Bonair. Where Mr Hayes's section was obtained, the Bonair 

 seems to have been replaced by shale, as no trace of the conglomerate 

 appears in his section. The coal bed, hesitatingly identified with the 

 Sewanee, may be the coal bed, 30 to 45 feet below the Bonair in the 

 other sections, and the " Soddy " (?) coal bed is evidently that seen by 

 Professor Colton at 45 feet above the Etna (Cliff) conglomerate. The 

 Walker coal belongs in the interval number 2. The thickness of meas- 

 ures below the Etna conglomerate is somewhat greater than that given 

 in the other sections.* 



*C. W. Hayes: U. S. Geol. Suryey folios, Chattanooga, 1892. 

 XVII— Bui,l. Geot,. Soc. Am., Vol. 15, 1903 



