72 OTL AND GAS; OHIO, WEST VIRGINIA, PENNSYLVANIA. 
WAYNESBURG “ A ” COAL. 
The small coal known as the Waynesburg “A” is only a few inches 
thick. It is generally present in the Claysville quadrangle, being 
often found in two small layers 1 to 6 inches thick, divided by 1 to 
3 feet of bluish clay. Above the coal is a hard blue limestone a foot 
or more in thickness. The distance of this coal above the Waynes¬ 
burg is from 40 to 55 feet. 
WAYNESBURG “ B ” COAL AND ASSOCIATED ROCKS. 
From 20 to 30 feet above the limestone overlying the Waynesburg 
“A” coal is a coal bed (the Waynesburg “ B ”), usually 1 foot or more in 
thickness, but locally wanting and here and there apparently split 
into two small beds 10 or 12 feet apart. Above the coal is a sandy 
shale which in places becomes massive. This in turn is overlain by 
a limestone, the bottom layer of which is about 18 inches thick, weath¬ 
ers to a light yellow, and shows a mottled gray color when freshly 
fractured. This layer resists weathering so well that it is usually 
« 
found in rather bold outcrop. The top layer of this limestone is 
from 12 to 15 inches thick and of a bluish-gray color, in some places 
with a si iglit reddish tinge. 
LITTLE WASHINGTON COAL. 
From 8 to 20 feet above the limestone just noted is the Little Wash¬ 
ington coal, which consists of 6 inches to 1 foot of hard blocky coal, 
free from shale partings and apparently of good quality. This little 
coal bed is very persistent, being invariably present where its horizon 
is exposed, though it is easily overlooked because the hard coal makes 
little smut. The distance between this bed and the Washington coal 
above varies from 6 to 15 feet over small areas, but shows a much 
greater variation between widely separated parts of the quadrangles, 
the maximum distance found being about 28 feet. 
WASHINGTON SANDSTONE. 
Between the Little W ashington coal and the Washington coal is 
the Washington sandstone. This bed is from 5 to 25 feet in thick¬ 
ness. It is usually found in thin layers, which when closely exam¬ 
ined are seen to be oxidized on the surface to a deep red, the interior 
being of a light-gray color and very micaceous, with numerous black 
specks of carbonaceous matter. In the vicinity of Washington, Pa., 
this sandstone is massive,with layers as much as 5 feet thick. Here 
the major part of the carbonaceous matter seems to be confined to 
indistinct bands running through the rock, roughly parallel to the 
bedding planes. The amount of carbonaceous matter is not so laro-e 
