126 OIL AND GAS; OHIO, WEST VIRGINIA, PENNSYLVANIA. 
the creek the upper beds of the Benwood limestone go under cover 
at the road intersection, half a mile west of the village of Cross Creek. 
The valley road from this point southward shortly reaches the 
Dinsmore beds, at which horizon it remains nearly to Pattersons 
Mill, the formation dipping at about the same rate as the fall of the 
stream. This condition also exists along the roads from the main 
valley road to the northwest. Up Middle Fork of Cross Creek the 
upper bed of the Benwood remains above water level to a point 
within 2 miles of Cross Creek village. On the main Cross Creek 
the Benwood limestone is very prominent, the lower half being 
especially w T ell developed. Many good sections of this member are 
exposed along the cuts of the Wabash Railroad and in the channel 
of Cross Creek. At the mouth of South Fork the Uniontown coal 
is 20 feet above the valley level. Up the main stream the Benwood 
sinks below surface level under the Wilson Mills syncline, but appears 
again at the east edge of Cross Creek Township; also on South Fork 
the Benwood goes entirely under cover and reappears before Mount 
Pleasant Township is reached. 
In Independence Township the Benwood limestone outcrops along 
the hillsides above Cross Creek and in the canyons of the streams 
flowing from the south. The upper beds are not so well developed in 
these areas as to the north, and in many places their identification is 
difficult. The Uniontown coal shows in good outcrop on the road 
from the twin tunnels to Independence village at the turn of the road 
near the crest of the hill. 
Pittsburg coal .—The Pittsburg coal outcrops along Cross Creek 
from Pattersons Mill and Avella to the west edge of the quadrangle. 
The coal maintains a regular thickness of 5 feet. It is overlain by 
the Pittsburg sandstone, which takes the place of the limestone above 
the Pittsburg coal and the Rider coal. 
In the following table are given the intervals obtained by compar¬ 
ing the elevation of different outcrops of the Benwood limestone and 
the Sewickley and Uniontown coals with the elevation of the Pitts¬ 
burg coal: 
Distance between base of Pittsburg coal and top of marking strata of Mononga 
beta formation, Cross Creek and Independence townships, Pennsylvania. 
Locality. 
Sewickley 
coal. 
Dinsmore 
limestone. 
Bulger 
limestone. 
Blue lime¬ 
stone. 
Uniontown 
coal. 
Above S< .th western Coal Co.’s mine. 
Feet. 
Feet. 
114 
149 
146 
153 
Feet. 
166 
170 
166 
173 
Feet. 
217 
Feet. 
West of ’ ryor station. 
On ride road toEldersville. 
220 
225 
At Pattersons Mill, average. 
Gillespie hill. 
104 
South of twin tunnels. 
140 
220 
Average. 
104 
148 
169 
218 
222 
