64 J. J. STEVENSON — LOWRR CAEBONIFEROUS, APPALACHIAN BASIN 



resting on a great mass of shales, the Logan having lost its massive 

 character and assumed the shaly phase characterizing it farther south. 

 No differentiation of the limestone is given in the record, so that one 

 can not recognize the silicious portion ; but the great increase is in the 

 lower portion, for in Braxton, as in Lewis, the sandstone is at 130 feet 

 below the top, while above the sandstone there is decrease of calcareous 

 matter. The most notable feature as compared with Stamping creek is 

 the decrease in the shales, which here are barely one-fortieth of what 

 they are at the easterly locality and one-fifth of what they are in Lewis. 

 The thickness of limestone is more than one-half that on Stamping 

 creek and nearly double that in eastern Lewis, showing that while 

 the thickness diminishes in general direction of dip, it increases south- 

 wardly along the strike. 



No other record is available for Lewis until Vadis is reached, on the 

 western border of the count}^, about 20 miles west from the eastern line, 

 30 miles due north from Sutton, and 20 miles south-southwest from the 

 well in southern Harrison county. The succession^ at Vadis is 



Feet 



1. Shale , 10 



2. Limestone 20 



3. Slate 30 



4. Limestone 30 



5. Slate 75 



6. Sand 15 



7. Limestone 30 



8. Red rock ("Pencil") 2 



9. Limestone 18 



10. Sandstone 15 



11. Red rock 5 



12. Limestone 35 



resting on the Logan sandstone, 195 feet. There is an increase in the 

 upper limestone division, but it is due to detrital matter, for in crossing 

 the county the limestone above the "Pencil" has decreased from 125 

 to 80 feet, and the upper bed of 95 feet has become two, respectively 20 

 and 30 feet. The decrease of the shales continues westwardly, and shows 

 the approach of the conditions observed in Doddridge immediatel}^ west 

 from Vadis, where within a short distance the shales, as well as most of 

 the upper limestone and its shale, has disappeared. The change be- 

 comes more notable in the record of a well near Glenville, in Gilmer 

 county, 10 miles west of south from Vadis and nearly on the strike with 

 it. The record is 



