DETAILED GEOLOGY OF CLAYSVILLE QUADRANGLE. 155 
in the tunnel east of Claysville. At this point the 
bed is over 100 feet lower than on the ridge west of Wolf town. On 
the north side of the National pike south of Woodell this limestone 
is extensively quarried for road material. It is at least 25 feet thick, 
the layers being rather massive and lying close together. Here it 
is about 65 feet above the exposure at the tunnel. On the road up¬ 
hill westward from A oodell the white ledges of tliis bed outcrop 
opposite the second house to the south, where it is 40 feet below the 
exposure on the National pike and 158 feet above an outcrop of the 
A ashington coal near the schoolhouse on this road at the foot of the 
hill. The Upper W ashington coal is everywhere present as a small, 
shaly coal from 4 to 10 inches thick. What is thought to be the 
t ne was noted only at the tunnel under Sugar Ilill, 
though it may probably lie part of the heavy beds of limestone quar¬ 
ried on the National pike south of Woodell. * The Finley coal shows 
in outcrop east of North Buffalo Church 32 feet above the Upper 
Washington limestone, and it is probably present at other places 
still farther east. 
IP ashington and Little AY ashington coals and T.ower AYashington 
limestone .—Along the Baltimore and Ohio Railroad from Woodell 
station to Washington one or more of these beds are exposed in each 
cut. The lowest point at which the A ashington coal was found in 
outcrop is at the sandstone quarry one-fourth mile west of Woodell 
station. Northward the steep rise of the rocks soon carries this coal 
well up toward the tops of the hills. It outcrops on the road uphill 
west of Wolf town near the top of the ridge, where it is 125 feet 
above the valley. On the Washington-Buffalo pike it is exposed 
at the top of the divide between Chartiers Creek and Brush Run. 
On the ridge road northwest from A 7 olftown the first outcrop of 
this coal occurs at a sharp bend in the road on the» high point 
south of the residence of McClain Johnson, 110 feet higher than the 
outcrop west of ATIftown. Half a mile farther on the coal shows 
again at least 8 feet thick in front of the first house to the north of 
Mr. Johnson’s. The bluish-white to cream-white limestone called 
by Stevenson a the Ah is here in fine outcrop 37 feet below the Wash- 
ington coal. The Lower A r ashington limestone is also exposed in 
a normal outcrop about 30 or 35 feet above the coal. Along this 
ridge to the north the Washington coal underlies a narrow strip 
to the township line, and from this point northward along the east¬ 
ern side of the ridge to the Mount Pleasant line west of Gretna. 
Its last outcrop in this direction is on the high ridge road three- 
fourths of a mile west of this village. 
Middle Washington limestone and Joily town coal .—A fine outcrop 
of the Middle Arashington limestone occurs on the ridge road from 
a Stevenson, J. J., Second Geol. Survey Pennsylvania, Kept. Iv, 1S7G, p. 55. 
