266 RECORD OF DEEP-WELL DRILLING FOR 1905. 
Eocene or Cretaceous ( ?) : Feet. 
Soft light-grayish marl or limestone composed largely of shell fragments, hard 
and soft in layers. 300-3B 
Soft grayish sandy marl, about one-half sand, with a few grains of glauconite, 
hard and soft layers; no water 350-40 
Cretaceous: 
Soft grayish sandy marl, softer than preceding 400-44 
Medium-hard light brownish-gray marl, some shell fragments, not sticky 440-55 
Soft limestone composed largely of shell fragments, with gray, brown, and red 
clay, a little glauconite, and colorless and greenish quartz grains 550-73 
Soft gray sand, slightly micaceous, with considerable glauconite in fine to 
coarse grains — water-bearing; the formation to which all deep wells about 
Hampton are sunk. Mr. Jennings says it is in places over 300 feet thick. 735 
Rig used, hydraulic. Diameter of well, 2 inches. Casing, 650 feet of 2-inch. Wate 
at 40, 145, and 735 feet. Water rises 75 feet above surface; flows 70 to 80 gallons p< 
minute. 
1448. Well at Bishopville, L,ee County. 
[Well begun July 21, 1905; completed August 1, 190.".. Authority, Hughes Specialty Well Drilling Cor 
pany, conl ractor. Incomplete series of samples preserved. Geologic correlations by W. B. Clark.] 
This well gets water from a gravel bed in the Potomac (fresh-water Cretaceous) grou] 
The Potomac covers the greatest area and is about the most important of all the wate 
bearing formations in the series of sediments underlying the Atlantic Coastal Plain fro 
New Jersey to Georgia. 
Record of well at Bishopville. 
Potomac: Feet.; 
Pink sandy clay 1- ! 
Soft light-buff clay , 20-1 
Coarse while sand 30-Kl! 
Coarse reddish sand ; artesian water 165— lJ ! ! 
Sand and clay in layers 185-2!.' 
Tough gray pipeclay and sand 220-2 1 
Tough gray pipeclay 240-2 
Hardpan rock 258-2 j 
Coarse red gravel; fine supply of i_r< x »<1 water 202-2 I 
Rig used, rotary. Diameter of well, <S inches from surface to 1G0 feet; inches from 1 1 
to 262 feet. Casing to 262 feet. Cook 6-inch st rain, r, 262 to 292 feet. Water stands J 
19 feel below surface. Well yields 19 gallons per minute for each foot head is depress ■■ 
from 22 to 20 feet. 
1449. Well at Orangeburg, Orangeburg County. 
[Well begun and completed in June, 1905. Authority, Hughes Specialty Well Drilling Company, C< 'i 
i ractor. Samples preserved. Geologic correlations by W. B. Clark.] 
This is one of a group of three wells. Water is obtained from a bed of sand that v 
deposited in Eocene time. The formations penetrated are the Lafayette (Pliocene) loi t| 
and clay and Eocene marl and sand. 
Record of well one-eighth mile east of Atlantic Coast Line station, Orangeburg. 
Pliocene : Feei 
Yellow sandy loam 1- 
Orange sandy clay 2-1 
Eocene : 
Soft buff marl (no sample) 30- 
Hard white cherty limestone 40- 
Tough sticky gray marl 45- 
Marl rock (light-gray, loosely compacted limestone) 55-! : 
