1G6 OIL AND GAS; OHIO, WEST VIRGINIA, PENNSYLVANIA. 
ing East Finley township at the point where the north line of the 
township crosses Buffalo Creek. From this trough the rocks rise 
eastward to the Washington anticline and westward to the Claysville 
anticline. On Wheeling Creek, west of the Claysville anticline, the 
rocks dip steeply to a trough which heads in Donegal township, north¬ 
west of Coon Island. In this area the rocks, though wrinkled, have 
a maximum difference of level of less than 200 feet. The rocks 
exposed at the surface include a vertical section extending upward 
from the base of the Middle Washington limestone for a distance of 
/ 
about 550 feet. 
Prominent beds of the Greene formation. —In this connection will 
be considered only those beds that are prominent enough to be of 
value as geologic markers over rather extensive areas, a detailed 
description of the areal distribution of each outcropping bed not 
being within the scope of this paper. A limestone bed that is some¬ 
what prominent lies about 100 to 120 feet above the Upper Wash¬ 
ington limestone, and is here called the Prosperity limestone. Its 
maximum thickness is 8 or 10 feet. Ledges of this bed weather cream 
to bluish gray, resembling somewhat the Upper Washington lime¬ 
stone. The thickness changes greatly from place to place, but the 
bed is recognizable over most of Fast and West Finley townships. 
In the higher points along the Claysville-Burnsville pike from 
Fargo to the south border of the quadrangle and on the divide be¬ 
tween Robinson and Wheeling runs, a persistent bed of limestone 
occurs in two or three thick rusty-black layers, somewhat resembling 
the Donley limestone, and at all points easily distinguishable from 
the associated beds. This bed is about 2G0 feet above the Upper 
Washington limestone. 
Upper Washington limestone and coal , Donley limestone , and 
Sparta coal, —These beds are exposed only along the sides of the 
deeper valleys. On Rocky Run the Upper Washington limestone 
outcrops in the village of Gale, and the other beds of the group are 
exposed on both sides of the valley. These outcrops form a belt on 
both sides of the valley to its mouth, the dip in the rocks being a 
little less than the fall of the creek bed. On Templeton Run this 
belt of outcrop encircles the base of the hills on each side of the val¬ 
ley from the south border of the quadrangle to the road forks If 
miles south of Pleasant Grove, near which place the Upper Wash¬ 
ington limestone goes under cover. 
On Robinson Run at the south border of the quadrangle the Upper 
Washington limestone outcrops on the sides of the valley 125 feet 
above the stream,' but at Good Intent it is at the foot of the hill. 
Upstream the rise of the rocks increases for some distance, the Upper 
Washington limestone going under cover in the run about 1 mile be¬ 
yond the township line between East and West Finley, near the Bell 
