MARYLAND GEOLOGICAL SURVEY 173 



Section Along West Slope of Tuscarora Mountain, Southeast of 

 McConnellsburg, Pennsylvania 



Silurian Tuscarora sandstone. Feet 



Massive granular white quartz sandstone 200+ 



Ordovician or Silurian Juniata formation. 



Soft red unfossiliferous sandstone and red shale, interbedded 400+ 



Ordovician-Martinsburg shale. 



- Oswego gray sandstone member 150 



Maysville (Fairview) fossiliferous gray sandstone (Orthorhynchula 



bed at top) 300 



Upper Eden shale and calcareous sandstone interbedded 400 



Middle Eden fossiliferous shale weathering yellow 



Lower Eden shales, not exposed 



Trenton and Utica ? black fissile unfossiliferous shale with black 



shale at base bearing graptolites 



Chambersburg limestone 



