DETAILED GEOLOGY OF BURGETTSTOWN QUADRANGLE. 119 
bed was determined by the comparison of elevations at the following 
places : 
Distance between top of Redstone coal and base of Pittsburg coal. Smith 
Township, Pennsylvania. Page. 
West of Burgettstown_,_ 70 
Crossroads north of Bulger_ 00 
South of Raccoon station_I_ 72 
Average_ 07 
Rider coal .—In the northwestern portion of the township the 
Rider coal is a distinct bed from 1 to 2 feet thick, lying fully 20 
feet above the top of the main Pittsburg coal bed. Near the railroad 
the Rider apparently forms the upper bench of the Pittsburg coal, 
being a succession of thin bands of coal interspersed with clay and 
shale. 
Pittsburg coal .—On the north side of the railroad the Pittsburg 
coal outcrops on the hillsides. It is opened for mining in many 
places and can be followed with ease. South of the railroad it rapidly 
sinks under cover. The last outcrop in Cherry Valley is about 1 
mile from Raccoon station, and the last on Burgetts Fork at the south 
end of Burgettstown. 
Intervals .—The measurements obtained for determining the inter- 
vals between the base of the Pittsburg coal and the different mark¬ 
ing strata of the Monongahela formation are shown in the subjoined 
table. Most of the comparisons of elevation were made to determine 
the distance of the Bulger limestone above the Pittsburg coal. This 
distance is from 145 to 160 feet, with an average of 155 feet, the 
smaller intervals being in the A T icinitv of Bulger. 
Distance between base of Pittsburg coal and top of marking strata of Monon¬ 
gahela formation. Smith Township, Pennsylvania. 
Locality. 
Sewickley 
coal. 
Dinsmore 
limestone. 
Bulger 
limestone. 
Uniontown 
coal. 
Waynes- 
burgcoal. 
CrnscmaHu nnrth nf Rlllcpr tunnel 
Feet. 
Feet. 
Feet. 
149 
Feet. 
Feet. 
120 
145 
159 
QAnth eiHp nf Riilf^pr TTill 
127 
150 
North side of Raccoon station, outcrop 
nnmnd ppH witVi T'nvlnr wpll No *2 
135 
160 
1 mile south of Raccoon station, outcrops 
99 
133 
156 
frnm Hn rernf tstnWTl t.O ffVlPrr V Vftl lPV . 
125 
204 
Cherry Valley oil field, outcrop compared 
131 
151 
Cherry Valley oil field, outcrops compared 
nf fipntt. h PIT'S wpll No. I . . 
203 
Cherry Valley oil field, outcrops compared 
TI7-I+V* rdonrrl ni Qpntt llPirS wpll No. fi 
221 
261 
Outcrop by Pittsburg and Eastern shaft 
Va 9 . 
139 
159 
92 
140 
160 
Outcrop compared with record of L. M. 
266 
2 miles south of Burgettstown, outcrop 
compared with record of John Easton 
136 
A vprn p rp .. 
95 
132 
155 
209 
264 
