186 RECORD OF DEEP- WELL DRILLING FOR 1905. 
Selma: Feet. 
Medium soft gray marl and sand 120- 180 
Medium soft gray marl, fossiliferous in places and in places containing 
pyrite. the formation growing more sandy toward the bottom 180- 980 
Hard marl and sand rock 980-1 , 000 
Eutaw: 
Soft gray limy micaceous sand 1 , 000-1, 040 
Rig used, jet. Diameter of well, 4 inches from to 720 feet; 3 inches from 720 to 1, 040 
feet. Well barely flows; pumps 15 gallons a minute from a depth of 50 feet. 
20. Well 1 mile east of Granite, Mobile County. 
[Well begun November 14, 1905; completed December 4, 1905. Authority, John L. Ford, driller. 
Samples preserved. Geologic correlations by E. C. Eckel.] 
This well starts in recent deposits and penetrates clays and sands of late Tertiary 
(Pliocene) age that are classified as Grand Gulf formation. 
Record of well of Alabama Port Company. 
Recent: Feet. 
Soft black mud with shells 0- 35 
Grand Gulf: 
Hard yellow clay 35- 95 
White sand and gravel 95-210 
Hard green clay 210-250 
Fine white sand 250-285 
Hard green clay 285-340 
Gray sand — water bearing; (lows 35 gallons per minute 340-389 
Hard green clay 389-440 
Gray sand — water bearing; flows 135 gallons per minute; static head, + 40 
feet 440-550 
Rig used, jet. Diameter of well, 4 inches. The water from the bed at 440 to 550 feet 
was too salty to be potable, so the well was abandoned and another sunk to the 340-foot 
sand. 
ARIZONA. 
35. "Well near Phoenix, Maricopa County. 
[Well begun February 22, 1905; completed March 27, 1905. Authority, C. W. Goodman, superintendent 
United States Indian school. No samples.] 
The formations penetrated by this well comprise clay, sand, and " cement," the latter 
being sand cemented by carbonate of lime, forming a more or less sandy limestone. The 
whole series partly fills an old rock valley through which Salt River now flows. A summary 
of the geology of Salt River Valley and a detailed account of the character of the waters 
developed by wells are given in Water-Supply and Irrigation Paper No. 136, "Underground 
waters of the Salt River Valley," by W. T. Lee. 
Record of well at United. States Indian school, 3 miles northeast of Phoenix. 
Feet. 
Soil and reddish cement 1- 46 
Clay and cement 46- 60 
Cement (pinkish sandy limestone) 60- 65 
Pinkish sandy clay 65- 68 
Gravel — water-bearing stratum in an adjoining well 68- 70 
Cement (pinkish sandy and limy clay) 70- 73 
Clay and fine gravel 73- 78 
Gravel, with small chunks of limestone 78- 90 
