DUNKAKB FORMATION 123 



which prevails in Center, Jackson, and Aleppo. The section in western 

 Center is : 



Feet Inches 



1. Nineveh limestone 2 



2. Shale, sandstone, concealed 70 



3. Fish Creek sandstone 50 



4. Dunkard coal bed 1 8 



5. Limestone 1x6 1 6 



6. Sandstone, shale 35 



7. Jollytown limestone, shale Ixa 10 



8. Shale, sandstone, concealed 100 



9. Ten-mile limestone 2 



10. Shale, sandstone 35 



to the Upper Washington limestone. The Eogersville limestone is 

 here, but concealed where the measurement was made. The Pursley 

 coal bed, underlying the Eogersville limestone, is shown at numerous 

 places and is mined on Pursley creek, where its thickness is 20 inches. 

 The interval between the Nineveh and Upper Washington limestones 

 is about 300 feet in northern Center, but in southwest Center it is about 

 260 feet and the Ten-mile limestone seems to be replaced by red shale. 

 The Eogersville limestone disappears westwardly, becoming only cal- 

 careous shale near the line of Jackson township. 



In Jackson township the Dunkard coal bed is only 100 feet below 

 the Nineveh limestone, as it is also at an exposure in western Center; 

 but in Aleppo that interval is 168 feet and one finds there at 40 feet 

 below the limestone a thin coal bed, apparently the same with that 

 in Morris and Eichhill, at 20 to 24 feet, and perhaps the Hostetter bed. 

 The place of this bed is concealed at the Jackson and Center localities. 

 The Dunkard coal bed is constant in Center, Jackson, and Aleppo, but 

 seems to be wanting in Morris and Eichhill. It is thin, not exceeding 

 2 feet, in two nearly equal benches, separated by 1 to 3 inches of clay. 

 The coal is good and is mined by stripping at many places. The little 

 limestone, IX&, is always present with the coal, and the Jollytown lime- 

 stone is equally persistent in Center, Jackson, and Aleppo, but it has 

 not been recognized certainly in either Morris or Eichhill. Its thick- 

 ness is greatest in western Center; it is thinner and more shaly in 

 Jackson, and is thin where last observed in western Aleppo. The interval 

 from the Jollytown to the Upper Washington decreases westwardly from 

 137 feet in Center to 115 in western Aleppo. The Ten-mile limestone 

 and Boyd and Pursley coals are evidently wanting in Aleppo near the 

 West Virginia line.* 



*J. J. Stevenson: (K), pp. 153, 154, 155, 157, 158, 159, 160-162, 172-174. 

 I. C. White: (K), pp. 161-163. 

 J. F. CarU: I 5, p. 308. 



