WEST VIRGINIA GEOLOGICAL SURVEY. 4! 



point where the fold becomes monoclinal. At the Gilmer- 

 Calhoun Line, its elevation is 500 feet. 



Shinnston Syncline. The Shinnston Syncline of Hennen" 

 enters Lewis County from Harrison one mile and a half north- 

 west of Jane Lew, but dies out against the slope of the Chest- 

 nut Ridge Anticline, in a shallow, fan-shaped basin in the 

 region of Jane Lew, hardly more than a mile from the county 

 line. The surface geology is that of the Monongahela and 

 Conemaugh Series, the Pittsburgh Coal having an elevation of 

 1350 feet at the count}^ line. 



Grassland Syncline. The Grassland Syncline of Hennen 

 is the longest structural feature of the two counties, passing 

 entirely across them in a northeast-southwest direction. At 

 the northeast it crosses the Upshur-Lewis Line one-half mile 

 southeast of Aberdeen, Stonecoal Creek at Hilly Upland Run, 

 the West Fork River at Stonelick Run, about two miles south 

 of Weston, passes through Edmiston and Copley, crosses In- 

 dian Fork one-half mile above its mouth, the Little Kanawha 

 River at Duskcamp Run, about midway between Sand Fork 

 and Stouts Mills, passes through Cedarville, veers southward 

 and crosses Crooked Fork one-fourth mile north of the Brax- 

 ton Line, turns westward, crossing Right Fork of Steer Creek 

 at Big Laurel Run, finally ending against the slope of the 

 Chestnut Ridge Anticline at Bear Fork, two miles south of the 

 mouth of Standingstone. During most of its length, the fold 

 is symmetrical about its axis, having about the same rate of 

 rise on either side. 



The surface geology along this axis is principally that of 

 the Dunkard and Monongahela Series, the upper part of the 

 Conemaugh cropping only in northeastern Lewis, on Stonecoal 

 and Hackers Creek waters. At the Upshur-Lewis Line, the 

 Pittsburgh Coal is 1225 feet above sea level, but dips steadily 

 southwestward for the next 18 miles until at the point where 

 the basin crosses Sand Fork, near Copley, it is only 625 feet, 

 the dip being 33 feet to the mile. For the next nine miles of 



"Ray V. Hennen, Doddridge-Harrison Report, W. Va. Geol. Survey, 

 p. 63; 1912. 



"Ray V. Hennen, Doddridge-Harrison Report, W. Va. Geo\ Survey, 

 p. 65; 1912. 



