122 OIL AND GAS; OHIO, WEST VIRGINIA, PENNSYLVANIA. 
In the following table will be found the intervals obtained by com¬ 
paring the different elevations of the two coals and the limestone 
bed with the elevation of the base of the Pittsburg coal in different 
parts of the township: 
Distance between base of Pittsburg coal and top of marking strata of Monon- 
galiela formation, Jefferson Township, Pennsylvania. 
Locality. 
Sewickley 
coal. 
Dinsmore 
limestone. 
Bulger 
limestone. 
Blue lime¬ 
stone. 
Union town 
coal. 
On road from Hanlin to Eldersville. 
On road from Hanlin to Lee schoolhouse. 
On road from Dinsmore to Cross Creek.. 
On road from Hanlin to Pattersons Mill 
Creek 
Feet. 
105 
89 
111 
102 
Feet. 
142 
132 
132 
Feet. 
181 
170 
158 
178 
171 
163 
156 
160 
Feet. 
206 
199 
Feet. 
On road east of McCreed Run. 
On ridge east of Bethel Church. 
On ridge west of Bethel Church 
138 
142 
144 
132 
141 
208 
215 
At head of (tillospie Run 
On road from Cross Creek to Bethel 
Church 
On road southeast of MeCreed Run 
211 
Average. 
102 
138 
167 
204 
213 
Redstone coal .—The Redstone coal is present only as a thin coaly 
shale throughout the township. Its outcrop was noted on the road 
from Hanlin to Eldersville and also on the road leading north from 
the twin tunnels of the Wabash Railroad. The following intervals 
were measured: 
Distance between base of Pittsburg coal and top of Redstone coal, Jefferson 
To wash ip. Pen n sylvan ia. 
Feet. 
On road from Hanlin to Eldersville_I_ 77 
On road from the twin tunnels northward.__ 60 
Average__\1_ 68 
Pittsburg coal .—On the north side of the Eldersville ridge the Pitts¬ 
burg coal outcrops at an elevation of 1,080 to 1,100 feet. The steep 
dip of the formation to the southeast reduces this elevation to about 
1,020 feet before the coal goes under cover in the side streams which 
flow northward into Harmon Creek. On McCreed Run the coal 
outcrops within less than 1 mile southwest from Eldersville and 
there goes under cover at an elevation of 1,076 feet. On Scott Run 
the highest outcrop occurs If miles south of Eldersville at an eleva¬ 
tion of 1,010 feet. Along the south edge of the township the coal 
is halfway up the hillside above Cross Creek at an elevation of about 
1,000 feet. The rocks here are nearly level, the coal going under 
cover at about the same elevation in the ravines on the north side of 
Cross Creek. Throughout the township the limestone above the 
Pittsburg coal and the Rider coal bed are absent, being replaced by 
a heavy brown sandstone (Pittsburg sandstone) whose base is only 
a foot or so above the main coal. 
