150 J. J. STEVENSON — CARBONIFEROUS OF APPALACHIAN BASIN 



In the extreme eastern part of Wise county Mr Campbell measured a 

 section which shows the relations of the chief horizons of the Norton. 



Feet. Inches. Feet. Inches 



1. Gladeville sandstone 



2. Interval 150 



3. Imboden coal bed 4 5 



4. Interval 250 



5. Upper Banner coal bed 3 to 7 



6. Interval 100 



7. Lower Banner coal bed 1 6 to 4 4 



8. Interval 225 to 285 



9. Kennedy coal bed 1 to 9 



10. Interval 340 



11 . Tacoma coal bed •. 3 4 to 4 4 



12. Interval. 90 



13. Jawbone coal bed 4 4 to 8 8 



14. Interval to Lee formation 150 



giving in all somewhat more than 1,200 feet for the Norton. The coal 

 beds numbers 11 and 13 correspond to beds seen by Stevenson in Pen- 

 ningtons gap, where the latter is sometimes of workable -thickness. The 

 other beds below the Imboden are usually thin in Lee and western Wise. 

 Careful and detailed observations were made in this area by Messrs 

 McCreath and d'Invilliers, whose results will be utilized in another 

 connection.* 



In attempting to correlate these Virginia deposits with those already 

 described in Tennessee, one is at some disadvantage because no avail- 

 able information exists for the region along the easterly border from 

 Coal creek northeastward ; the more so because only two imperfect sec- 

 tions of the Lee formation have been obtained within the Stone Gap 

 area. It is possible only to recognize the chief members of the column, 

 and detailed correlations must be left in great part for others. 



Mr Campbell's Lee formation is strictly equivalent to Mr Keith's Lee 

 conglomerate of the Wartburg quadrangle in Tennessee, the top member 

 of which is the Rockcastle of Mr Campbell's section on the west side of 



* J. J. Stevenson : Geological reconnaissance of parts of Lee, Wise, Scott, and Washington coun- 

 ties, Virginia. Proc. Amer. Phil. Soc, vol. 19, 1881, pp. 229, 230, 238, 239, 249, 250. The names 

 Cannel, Upper Splint, Lower Splint, Kelly, and Imboden, applied to the coal beds in this paper, have 

 been retained by Mr Campbell, though the upper three beds do not retain throughout the area 

 the characteristics upon which the names were based. Stevenson's work in this region was a 

 mere reconnaissance and in no sense "a careful study," as some have supposed. The whole 

 time spent in the coal area within three counties was less than three days. 



M. R. Campbell : Geology of Big Stone Gap coal field of Virginia and Kentucky. Bulletin U. S. 

 Geol. Survey no. Ill, 1893, pp. 39, 41-46, 63, 69; U. S. Geol. Survey folios, Estillville, 1894; Bristol, 

 1899. 



J. M. Hodge : The Big Stone Gap coal field. 1893, p. 3 (author's edition, Trans. Amer. Inst. Min- 

 ing Kng'rs). 



