DETAILED GEOLOGY OF CLAYSYILLE QUADRANGLE. 163 
Klin fr°m its mouth these beds are probably under cover for less than 
a mile. The rise of the rocks in this direction is much greater 
than that of the stream bed. At the fork of the roads on this stream 
the coal outcrops in the bluff a few feet above the road. East of 
this point the group is exposed at many places along the valley road 
to a point within a mile of the township corner. At no other place 
in the township does it show, except for a short distance in the bed 
of Buffalo Creek at Taylorstown, where the crest of the Claysville 
anticline brings it to the surface. 
c_2 
DONEGAL TOWNSHIP, WASHINGTON COUNTY. 
Donegal Township lies along the western slope of the Claysville 
anticline. The bottom of the Burgettstown syncline crosses its 
extreme northwest corner. Southwestward from this point the rocks 
rise steeply, culminating in a dome about H miles north of Clays¬ 
ville. From this dome a broad anticlinal nose juts out to the west, 
crossing Dutch Fork about a mile south of Budaville. Southward 
from this anticline the rocks dip at a high angle, reaching the north 
end of a shallow trough near Dutch Fork, 1 mile northwest of Coon 
Island. From this point the bottom of the trough appears to extend 
a little west of south, leaving the quadrangle a short distance north 
of Wheeling Run. Recognizable outcrops are so scanty that with 
the time allotted to the work it was not possible to determine pre¬ 
cisely the lay 7 of the rocks in this locality. From the bottom of this 
trough eastward the rocks rise to the Claysville anticline, the crest 
of which crosses Dutch Fork about 1 mile west of Claysville, with 
a general northeast-southwest trend. The rocks exposed range from 
the Uniontown coal upward through the Washington formation and 
include about 300 feet of the lower part of the Greene formation. 
Prominent beds of the Greene formation .—In the southern part 
of Donegal Township, along the high ridges dividing the headwaters 
of Dutch Fork, Wheeling Creek, and Robinson Run, several thin 
beds of limestone have been noted. The most prominent of these 
limestone beds in East and West Finley townships is about 265 feet 
above the Upper Washington limestone and usually shows as a single 
dark rusty ledge at least 15 inches thick. It occurs at the road forks 
on top of the first ridge south of the National pike and about 1 mile 
from the west border of the quadrangle. At the first road to the 
south on the ridge west of Coon Island the Claysville limestone out¬ 
crops in several small white ledges that closely resemble those of 
the Upper Washington limestone. The Claysville limestone, to¬ 
gether with a thinner bed about 30 feet above, also shows in a 
number of places on the ridges southeast of the above-mentioned 
location, the rise of the rocks in that direction keeping them well up 
toward the crest line. 
