86 
OIL AND GAS; OHIO, WEST VIRGINIA, PENNSYLVANIA. 
quadrangle, with an average of 15 or 20 feet. It is a fine gray sand¬ 
stone, usually containing near the middle of the bed a band 2 to 12 
feet thick, which is more or less conglomeratic. This portion is made 
up of fine white to gray sand and well-rounded quartz pebbles up to 
the size of a bean. There is a break in the sand near the top, which 
thickens to the south across the Claysville quadrangle, until in places 
the two portions of the sand are separated by 25 feet of shale. In 
this condition the upper portion is called bv drillers the Gordon 
Stray sand. North of the Claysville quadrangle the Gordon Stray, 
as a distinct sand, is mentioned in the records of few wells. 
STRAY-STRAY SAND. 
In parts of the Claysville quadrangle another thin sandstone bed 
a few feet above the Gordon Stray is noted in a number of detailed 
records. This is usually called by drillers the Stray-Stray sand. It 
is apparently of local extent only, and from the information at hand 
it is impossible to say if the sand is a part of the Gordon Stray or a 
separate lenticular sandstone in the shale above. 
FOURTH SAND. 
The Fourth sand is from 60 to TO feet below the Gordon. It is a 
white to grayish sandstone, much of it conglomeratic. In thickness 
it ranges up to 35 feet, averaging between 10 and 20 feet. It under¬ 
lies about the same area as the Gordon sand, but is not so constant 
either in thickness or quality. 
FIFTH SAND. 
The Fifth sand is from 95 to 120 feet below the Gordon sand. It 
is usually a fine white sand, carrying irregular lenticular patches of 
conglomerate. In the Claysville quadrangle it is rarely over 15 feet 
thick, but is fairly constant both in thickness and quality over the 
eastern half of that quadrangle. Over the western half this sand¬ 
stone, as well as the Gordon and Fourth sands, is wanting in many 
places. This is especially true of a large area in the northwestern 
quarter of the quadrangle, where the sandstones are missing or are 
represented only by a few thin “ shells." The Fifth sand is the low¬ 
est usually reached by the drill in the area investigated, though a 
few wells report a sand called the Sixth or Bayard, and below this 
one called the Elizabeth sand. 
