Stevenson.] lUO [March 18, 



4. Sandstone, red to gray 42' 



5- Red shales 1 63' • 



6. Concealed 78' 



7. Sandstone 105' 



8. Concealed 42' 



9. Sandstone, reddish brown to bluish 40' 



10. Shales and sandstones 400' 



11. Shales with coal beds 230' 



13. " Quarry" sandstone 30' 



Devonian. 



1. Concealed 900' 



2. Sandstone 10' 



3. Concealed 15' 



4. Conglomerate 30' 



5. Sandstones, flaggy, not well shown 160' 



The "Walker Mountain fault passes very near the mouth of Back creek 

 and is crossed by that stream at a little way west from the railroad. The 

 exposure of the shales is practically continuous to the creek, but there 

 were seen none of the yellow shales observed on the Dublin and Pearis- 

 burg pike. The line of fault is therefore drawn directly under the lime- 

 stone of the Knox group. 



Southward from Back creek for nearly a mile, the whole region near the 

 railway is covered with a thick deposit of terrace debris, and the only 

 exposure is in a cut at about 1000 feet from the end of the Back creek 

 trestle, where a veined, somewhat brecciated limestone is shown associated 

 with light drab shales, all belonging to the lower part of the Knox lime- 

 stone. The next exposure is in a stream at, say, 600 feet south from Bel- 

 spring station, where limestones and shales are shown. Similar beds are 

 exposed on the railroad at about 300 feet further, where the shales, or 

 rather shaly limestones, weather light yellow or grayish white. The 

 limestone is drab to blue, is somewhat silicious, is veined with white spar 

 and is more or less brecciated. The dip is south-eastward at about eighteen 

 degrees. But the dip quickly becomes flexuous and these shales and lime- 

 stones remain in sight to the fifth mile post. The irregular dip continues 

 for half a mile further, but thence for a mile or two, to within three miles 

 and a half of New River station, the more prevalent dip is south-eastward, 

 so that the massive limestones with large nodules of chert are brought 

 down. These thicker beds are separated by impure shaly limestones 

 which weather into clays, usually yellowish red. 



The dip becomes north-westward at three miles and a half from New 

 River station, and this direction is kept forprobably a mile along the road, 

 which follows the strike for much of the distance. In the deep cuts about 

 two miles and a half fi'om New River station, the beds are in great disor- 

 der and consist of the shaly limestones which the reversed dip has brought 

 to the surface again. Thence no exposure was found until the first mile 



