DETAILED RECORDS. 
265 
Tertiary and Cretaceous (?) — Continued. Feet. 
Very hard quartz rock 1, 306 -1, 309 
Hard sandstone . 1, 309 -1, 312 
Sandstone with hard layers; hard sandstone at 1,372-1,373 feet. . .. .■ 1, 312 -1, 373 
Marl; sandy marl at 1,381-1,392 feet 1, 373 -1, 400 
Cemented shell and marl. 1, 400 -1, 412 
Marl; sticky marl at 1,465-1,492 feet 1, 412 -1, 540 
Sandstone 1, 540 -1, 550 
Marl with iron pyrite 1, 550 -1 , 565 
Green marl with hard la} 7 ers of sandstone 1,*565 -1, 570 
Marl with layers of sandstone 1, 570 -1 , 590 
Hard sandstone; very hard from 1,595-1,598 feet 1, 590 -1, 5S8 
Marl with layers of sandstone 1 , 598 -1 , 6/50 
Marl 1, 650 -1, 660 
Sandstone 1, 660 -1, 665 
Sticky marl with layers of hard sandstone . 1 , 665 -1 , 685 
Cemented shell and sandstone with thin layers of marl 1, 68*5 -1, 695 
Hard sandstone and shells with iron pyrite 1, 695 -1, 711 
Marl 1, 711 -1, 722 
Cemented shell with iron pyrite 1 , 722 -1, 734 
Hard marl with shells 1, 734 -1, 750 
Hard, sticky marl 1, 750 -1, 775 
Hard marl with shells 1, 775 -1,819J 
Hard sandstone 1, 819J-1, 820 
jPotomacO): 
Soft sandstone; water-bearing 1 , 820 -1, 830 
Thin layers of hard and soft sandstone; soft water 1, 830 -1, 838 
Sandstone; water-bearing 1, 838 -1, 850 
Hard sandstone '. 1, 850 -1, 855 
Sandstone; water-bearing 1, 855 -1, 865 
Hard sandstone 1, 865 -1, 870 
Sandstone with thin layers below 1,880 feet ; water-bearing 1, 870 -1 900 
Marl with hard layers of sandstone 1 , 900 -1 , 920 
Rig used, rotary. Casing used, 9-inch to 1,216 feet; 6-inch to 1,820 feet; 4-inch 
strainer from 1,820 to 1,920 feet. Elevation of well, about 5 feet above mean high tide: 
'of well outlet, about 5 feet above ground. Well flows about 150 gallons per minute. 
Temperature of water at well mouth, about 98°; quality of water, soft. Pressure at 
first, about 36 pounds per square inch. 
In drilling a puddled-clay water jet was used for the entire depth and no casing (except 
for about 100 feet near the surface) was placed until a depth of nearly 1,400 feet was 
reached. Distinctive samples were obtained from only a few of the strata penetrated. 
1440. Well near Hampton, Hampton County. 
[Well begun in October, 1905; completed November 24, 1905. Authority, J. M. Jennings, contractor. 
Samples preserved. Geologic correlations by W. B. Clark.] 
This record shows care in discriminating and describing formations, and as few records 
ave been published from Hampton County it is of more than average importance. The 
upper formations described are thought to be of Eocene age; the water-bearing sand may 
be Cretaceous. 
Record of well 6 miles west of Hampton. 
Eocene: 
I Very fine, soft white sand containing some light-gray marl, quicksand; Feet, 
water-bearing 75-145 
Medium-hard gray and greenish limy sandstone 145-160 
Soft dark-greenish marl, sticky but not gritty; contains bits of shells 160-200 
Soft grayish marl containing a little very fine sand and very little, if any, 
water 200-300 
