74 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



railroad, but is better developed in Washington and York townships 

 near the Monroe line. In Warren township at the west it is 71; 

 in Wajne, 87; in Smith, 96, and in Washington 123 feet above the 

 Upper Sewiekley. In Wayne it is 74 feet above a peculiar magnesian 

 limestone; farther east the interval varies from 75 to 80 feet, the in- 

 creasing interval between Uniontown and Upper Sewiekley being caused 

 by increase in and below this limestone, the "Cement" of Professor 

 Andrews. This relation may serve in working out the conditions in 

 Monroe as well as to explain the increased interval between those coal 

 beds along the westerly outcrop southwest from Belmont county. In 

 Belmont the Waynesburg coal bed becomes insignificant south from the 

 Baltimore and Ohio railroad and at most localities appears only as an 

 insignificant blossom. 



Along the western side of Monroe county, into which the section 

 can be followed from Noble county, everything is simple. The Pittsburg 

 seems to be wanting at all exposures, but it is reported very thin, in 

 a well within Summit township. The Upper Sewiekley is a double 

 bed, 3 feet 8 inches to more than 6 feet, with a parting 4 inches to 2 

 feet 6 inches, varying at expense of the coal; the lower division is 

 commonly thicker than the upper. The horizon of this bed soon passes 

 below the surface at the north, but at the south it remains above drain- 

 age for fully 8 miles from the west line. 



In passing from the western tier of townships, one crosses a space 

 without clear exposures, beyond which the succession is distinct enough. 

 A series of sections along Sunfish creek across Center, Adams, and Salem 

 townships at 6 to 8 miles from the Belmont line makes the connection. 

 In Center, Professor Andrews gives: 



Feet Inches 



1. Red shale, ore bearing 63 



2. Concealed, elsewhere 20 feet of sandstone at base 51 



3. Coal bed . , 6 



4. Concealed 28 



5. Coal bed 1 6 



6. Shales 70 



7. Coal bed Blossom 



8. Interval 99 



9. Coal bed 5 9 



and he states that a very thin coal bed is at about 50 feet above Number 

 9. This lowest bed is complex, the structure being 



Coal, 1 foot 8 inches; clay with plant impressions, 2 feet 8 inches; coal, 2 



inches ; clay, 5 inches ; coal, 10 inches. 



