DETAILED GEOLOGY OF CLAYSVILLE QUADRANGLE. 
151 
HOPEWELL TOWNSHIP, WASHINGTON COUNTY. 
The Burgettstown syncline, which passes a short distance east of 
AVest Middletown, crosses the northwest corner of Hopewell Town¬ 
ship. Eastward from this trough the rocks rise in a broad dome¬ 
shaped anticlinal nose, which juts out from the crest of the Clavsville 
anticline. The exposed rocks have a thickness of about 325 feet, 
ranging from the Benwood limestone to a horizon a few feet above 
the Upper Washington limestone. 
Middle IF ashing ton and Lower AY aslting ton limestones and Wash¬ 
ington coal. —In this township the steep rise of the rocks from, the 
south and west brings these beds high above the valleys of the prin¬ 
cipal streams. On the east fork of Haynon Run the Washington 
coal crops out a short distance below the schoolhouse, half a mile from 
West Middletown and also at several places on the road down this run 
as far as Dunkle Run. Its outcrop line encircles the hillsides of the 
large tributary to Haynon Run which heads south of West Middle- 
town, and the coal goes under cover on this run a short distance south 
of the road crossing its headwaters. On Dunkle Run this group of 
beds is exposed as far as the Washington-Middletown pike, along 
which there are numerous exposures of the Lower Washington lime¬ 
stone. On the ridge south of Dunkle Run the Washington coal crops 
out at the heads of the numerous tributaries to Brush Run. East 
of Buffalo village and north of the Washington-Buffalo pike the 
Washington coal has been opened west of the run. It also outcrops 
just west of the village and on the Buffalo-Middletown pike well*up 
toward the tops of the hills on the west side of the run. At the head 
of Dunkle Run the coal is in fine outcrop. On the Samuel Donaldson 
farm, at the headwaters of Cross Creek, one-third of a mile west of 
the corner of Hopewell, Mount Pleasant, and Canton townships, this 
coal has been mined. It is approximately 5 feet thick, but owing to 
the condition of the opening no detailed section could be obtained. 
South of Buffalo village it outcrops on the point of the hills over¬ 
looking Brush Run, about 135 feet above the stream. The Little 
Washington coal is everywhere present, from 10 to 15 feet below the 
Washington coal. The Lower Washington limestone is of average 
thickness and has the same general appearance as described elsewhere. 
In most places it is overlain by the small coal found in Blaine Town¬ 
ship, though this coal is very thin, being at no place over 1 foot thick. 
YV aynesburg and YY aynesburg “A” and “ B ” coals.— On Brush 
Run the easternmost outcrop of the Waynesburg coal is at the road 
forks at the corner of Hopewell, Buffalo, and Canton townships. 
Northwest of this point it is exposed on the Buffalo-Washington pike, 
near the foot of the hill east of the schoolhouse, the Washington coal 
being just west of the schoolhouse and 112 feet above the Waynesburg 
