GENERAL GEOLOGY OF CLAYSVILLE QUADRANGLE. 
63 
I' ifty-foot sand. The wells are all light producers, and the structural 
conditions are unfavorable for a great extension of this territory. 
On the eastern slope of the Washington anticline, near the south 
end of the dome south of Washington, are a number of gas wells, the 
records of which were not obtained, though the facts learned in the 
field apparently indicate that most of these are producing from the 
upper sands. 
FAVORABLE LOCATIONS FOR NEW PRODUCTIVE TERRITORY. 
As previously stated, the primary object of the work here reported 
was not to locate new oil pools. The suggestions herein made are 
merely intended to point out those places which, in the judgment of 
the writer, are worthy of more careful study. 
From a study of the developed territory in the quadrangle it 
appears that the Finney syncline offers the best opportunity for fur¬ 
ther extension of the Washington-Taylorstown pool. The position of 
any productive territory in this basin to the south of the present line 
of development will doubtless be governed by the amount of salt 
water contained in the rocks. Unfortunately, the records of most 
wells outside of the developed area do not afford sufficient informa¬ 
tion regarding the condition of the sands and the amount of salt water 
contained in them to enable the writer to determine whether or not 
the sands are saturated, and, if saturated, to locate the upper limit of 
the water. In both directions from well No. 885 the top of the salt 
water in the Fourth and Fifth sands appears to be at about the 480- 
foot contour. It is possible, however, that this level does not persist 
over more than a small area of salt water held in the basin to the 
southwest of well No. 885, in a similar way to that found in the 
bottom of the basin east of Finney. In well No. 1116 water was 
found in the Gordon and a small amount of oil in the Fourth, but no 
mention is made in the record of salt water in either the Fourth or 
the Fifth sand, both of which are here reported to be of poor quality. 
In the records of wells Nos. 1114, 1115, and 1118 no mention is made 
of water in the sands. Well No. 955 is one of the pioneers of this 
region, and was drilled so long ago that even the owners of the farm 
do not remember the name of the company which drilled it. They 
claim, however, that a good showing of oil was found here, but it is 
not known from which sand it came. This being one of the early 
wells, it is probable that it was not drilled below the Gordon sand. 
The log of well No. 887 reports a small amount of oil in the Gordon 
sand, with water immediately below. The thickness of the sands in 
this well is reported as follows: Gordon, 43 feet; Fourth, 23 feet; 
and Fifth, 28 feet. No mention is made of water in the Fourth and 
Fifth sands. Aside from the general idea of the structure as shown 
