TENNESSEE 147 



lies the Kentucky " Coal 4." It is Mr Campbell's " Gladeville sand- 

 stone "of southwest Virginia. The coal bed above it is the Tionesta of 

 Pennsylvania and Ohio, the Hunnewell and Lower Splint of Kentucky, 

 while that at 300 feet, more or less, below this coal is apparently the 

 number 3 of Kentucky, the Mercer or Elkhorn, and perhaps the Imboden 

 of southwest Virginia ; so that in this section by Professor Bradley 

 the whole of the Pottsville and a small portion of the Allegheny are 

 included.* 



VIRGINIA 



No detailed observations are recorded between Coal creek and north- 

 eastern Lee county of Virginia, a distance of 40 miles. At the latter 

 locality one finds the section closely allied to the Elkhorn section of 

 Kentucky. 



In the Big Stone Gap area, embracing parts of Lee, Wise, and Scott 

 counties, Virginia, and of Harlan county, Kentucky, Mr Campbell di- 

 vides the measures into 



Feet 



Wise formation '. 1,276 



Gladeville sandstone 120 



Norton formation 1,280 



Lee formation 1,530 



with a still higher formation, which does not concern the present paper. 

 In Lee county, at a few miles southwest from the limits of Mr Camp- 

 bell's area, Stevenson obtained a section of the Lee formation along 

 Penningtons gap, where the rocks are almost vertical and, except in one 

 very tortuous portion of the gorge, well exposed. The intervals were 

 determined by pacing during a very hasty examination, so that while 

 the succession is given correctly, some of the thicknesses assigned are 

 certainly incorrect. The rocks are almost wholly sandstone and con- 

 glomerate, with a reported thickness of somewhat more than 1,000 feet, 

 evidently too little, for here one has higher measures than in Mr Keith's 

 Coal Creek section, where the thickness from Bonair downward is given 

 as 1,100 to 1,200 feet. The error is most probably in the estimate of a 

 sandstone mass at about 255 feet below the " Bee rock " or top conglom- 

 erate of the formation. Mr Campbell's section in Big Stone gap, some- 

 what more than 15 miles northeast from Penningtons gap, is in marked 

 contrast with that offered by Stevenson not only in thickness but in 

 composition. It is 



* F. H. Bradley : Report to Coal Creek Mining and Manufacturing Company, 1872, pp. 5-10. This 

 report is quoted in Resources of Tennessee, pp. 207-210. 

 J. M. Safford : Geology of Tennessee, pp. 401-403. 

 A. Keith : United States Geol. Survey folios. Briceville, 1896 ; Wartburg, 1897. 



