74 LARAMIE BASIN, WYOMING. 
Record of " oil well" 10 miles west of Red Buttes. 
Thickness. 
Feet. 
Black shale (Benton) 600 
Sand and shale (Cloverly) 200 
Sandy slate j 400 
Red caving sandstone 100 
Red sandstone, harder J 100 
Red sandstone, much harder j 100 
Red sandstone, hard t 190 
Hard sandstone, with pebbles 10 
Depth. 
Feet. 
600 
800 
1,200 
1,300 
1,400 
1,500 
1,690 
1,700 
A small amount of water was found at a depth of 90 feet. The 
second water occurred at a depth of 600 feet, in white sandstone 20 
feet thick; it rose within 10 feet of the surface and could not be low- 
ered by bailing. Water was found in many beds between 600 and 
800 feet. The lowest water was in 20 feet of brown sandstone at a 
depth of 1,500 feet; it flowed over the casing. 
Mansfield ranch. — On the Mansfield ranch, in the NE. J NE. } 
sec. 20, T. 14 N., R. 75 W., 16 miles southwest of Laramie, an unsuc- 
cessful boring was made in 1890 to a depth of 502 feet. After pass- 
ing through 9 feet of gravel, dark shale of the Benton formation was 
entered and continued to the bottom. At 65 feet there was a small 
flow of salt water, and at 245 feet a small flow of gas. At 440 feet 
salt water rose within 4 feet of the top of the casing. It is unfor- 
tunate that this boring was not continued, for within a short distance 
it would have entered the Cloverly formation, and doubtless would 
have obtained good water. To judge by the oil boring in sec. 13 of 
the same township, however, the pressure is not sufficient to afford 
a flow. 
Homer ranch. — At the Homer ranch on Fivemile Creek, in sec. 12, 
T. 14 N., R. 74 W., a well 1,118 feet deep yields a fair supply of 
water which rises within 4 feet of the surface. No record was 
obtained, but from the thickness of the strata in the slopes to the 
east it is believed that if this boring had been continued to a depth 
of 1,250 or possibly 1,300 feet the top sandstone of the Casper for- 
mation would have been penetrated and a flow obtained. 
Button Creek. — On the Empire ranch, in the NE. J NW. | sec. 27, 
T. 19 N., R. 77 W. ? . there is an artesian well, sunk in 1889, a section 
of which is given on page 54. The flow is from a depth of 540 feet 
and amounts to about 5 gallons a minute. The water is cool, but has 
a somewhat disagreeable taste. 
Cooper Creek. — An artesian well on the ranch formerly known as 
the Northrup place, in the NE. \ SW. \ sec. 11, T. 18 N., R. 77 W., 
has a 1 -gallon flow from a depth of 272 feet. It is 6 J inches in diam- 
eter. Water which rose within 12 feet of the surface was found at a 
depth of 110 feet, but it disappeared at a depth of 180 feet in a cavity 
into which "the drill dropped 4 feet." The water is cold and of 
