246 RECORD OF BEEP-WELL DRILLING FOR 1905. 
Eocene: Feet. 
Limestone, sand, and soft limestone 70- 80 
Limestone, upper 20 feet soft 85-135 
Sand, clay, and limestone 135-220 
Cemented sand and lime 220-240 
Ripley: 
Blue clay with lime 240-280 
Blue clay - - - 280-365 
vSand and marl in thin strata; salt water stood at 365 feet ... 365-550 
Fine sand and clay with 2 feet of flint at 700 feet and 2 feet of flinty limestone 
at 719 feet 550-800 
Sandstone - - - - 800-801 
Length of casing, 12-inch, 90 feet; 10-inch, 250 feet; 8-inch, 719 feet; 6-inch, 800 feet. 
Water overflows top of casing at rate of 25 gallons per minute. Quality, brackish; con- 
tains 80 grains salt per gallon. 
1220. Well at Pinehurst, Moore County. 
[Well begun in May, 1905; completed in October, 1905. Authority, T. B. Cotter, general superintendent, 
of Pinehurst. Samples preserved. Log compiled from samples by S. Sanford. Geologic correla- 
tions by W. B. Clark.] 
Pinehurst is near the western edge of the Atlantic Coastal Plain. The well passes 
through the basal clays, sands, and arkoses of the Potomac formation (Cretaceous) and 
penetrates the underlying greenish crystalline schists for 475 feet. 
Record of well at hotel, Pinehurst. 
Potomac: Feet. 
Light-brownish sandy clay or arkose 54 
Light-buff and light-gray clayey sand 65- 80 
Light-gray clayey sand 100 
Dark sandy clay Ill 
Light-bull', slightly clayey sand 128 
Brown sandy clay 147 
Light-brown clayey sand . 160 
Pre-Cambrian: 
Brownish, grayish, and greenish sandy clay, an arkose, or the oxidized top 
of the schist 191 
Coarse crystalline schist; contains quartz, feldspar, mica and a black to green- 
ish silicate 207 
Crystalline schist, sometimes fine, sometimes coarse with oxidized zones at 
391, 400, and 408 feet -. 207-457 
Gray gneiss with quartz vein 457 
Coarse crystalline schist 465-500 
Dark and light schist containing much quartz and chlorite 520-595 
Fine dark gneiss 600-655 
Rig used, cable. Diameter of well, 6 inches; depth, 681 feet. Water rises within IOC 
feet of surface. Well pumps over 100 gallons per minute. 
