WEST VIRGINIA GEOLOGICAL SURVEY. 121 



ing a thickness of 50 to 60 feet, and influencing the topography 

 to a marked extent. In physical character it much resembles 

 the Waynesburg, belonging more than 200 feet above, and 

 the two have often been confused in these two counties. 



In Hackers Creek, Skin Creek and eastern Freemans 

 Creek Districts, Lewis, it is not prominent, as it lacks its mas- 

 sive and pebbly character, but in western Freemans Creek, 

 Courthouse and Collins Settlement Districts, Lewis, and in 

 most of Gilmer, it is a great cliff rock readily traced by the 

 eye along the hillsides. In Lewis this stratum makes a great 

 cliff along Sand Fork and its branches in the region of Cop- 

 ley and Bealls Mills, and also along Indian Fork. At Orlando 

 it makes a huge cliff half way up the hillside northwest of 

 the town. In Gilmer it makes a cliff, just above drainage, 

 along Sand Fork in the vicinity of Ellis. In Center District, 

 it makes a prominent cliff along Steer Creek and its branches, 

 being a conspicuous landmark at Rosedale where it is well 

 up on the hillsides. 



The Upper Sewickley Sandstone has been quarried on the 

 Stokes Tunstill farm on Polk Creek, Freemans Creek District, 

 Lewis, 1.5 miles northwest of Weston. Flere the sandstone 

 is massive, coarse, buff, soft and friable, with small quartz 

 pebbles, only 20 feet of the upper portion of the ledge being 

 quarried and exposed. The quarry, which is 90 feet by hand 

 level above an opening in the Redstone Coal, is about 30 feet 

 long and extends about 20 feet into the hill. The stone seems 

 too friable here to have much value for building purposes. 

 This sandstone has also been quarried on the Andrew Ed- 

 miston farm on a branch of Middle Run, Courthouse District, 

 Lewis, 2.3 miles northwest of Brownsville, only the upper 15 

 feet of the ledge being exposed and worked. Here the sand- 

 stone is massive, coarse, gray, soft and friable, the tidal ele- 

 vation of its top being 1120' B. The quarry is about 60 feet 

 long and extends into the hill about 20 feet. The stone seems 

 too soft here to be of durable character. 



THE SEWICKLEY COAL. 



The Sewickley Coal, originally described by the First Geo- 

 logical Survey of Pennsylvania, belonging just under the Up- 



