46 
OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [bull. 212. 
to. On the Smith league, ou Cedar Bayou, a well 238 feet, giving the 
following section, was drilled several years ago: 
Log of well on Siriith league, on Cedar- Bayou, Texas. 
Feet. 
1. Red clay 75 
2. White sand _ _ _ 75 
3. Bluish clay, with shells 40 
4. Blue sand and pebbles 48 
At Dayton the J. M. Guffey Petroleum Company drilled a well 1,900 
feet deep, and on the north side of the hill the Taylor-Dayton Com- 
pany has been drilling to depths of from 500 to 1,000 feet. At Still- 
son the Hill-Brown Rice Land and Irrigation Company has drilled two 
wells nearly 500 feet in depth. 
The log of the Taylor-Dayton Company's well shows that Dayton 
Hill is composed of blue clays and sands to a depth of 500 feet, with 
bowlders of a soft gray sandstone at several horizons. These bowl- 
ders are rounded and concretionary, readily breaking into thin slaty 
portions, and appear to lie in a blue marly clay and to overlie heavy 
beds of quicksand. At 600 feet this well i>assed into limestones to 
the depth of 800 feel and then rock salt to 1,200 feet. In the Guf- 
fey well, 6 miles farther south, thin beds of sandstone are reported at 
various depths, but chiefly below 800 feet. Gravels also occur in this 
well record in the lower depths. In the Stillson well, 3 miles west of 
Dayton, yellow clays were drilled through to a depth of 104 feet. 
These were followed by 19 feet of quicksand, and from that depth to 
447 feet the section shows mostly a series of blue clays. Lime con- 
cretions were found from 132 to 174 feet and again between 244 and 
263 feet. No bowlders were found in this well, which terminated in 
40 feet of coarse gravelly sand with water. The following are the 
logs of these wells as supplied by the companies: 
Log of Taylor- 1 )< i //ton Company well, sec. 1J4 Houston and Texas Central Rail- 
road Company's lands, Liberty County. 
[Elevation, 100 feet.] 
Character of strata. 
Black dirt 
Blue clay 
Water sand 
Blue marl 
Quicksand 
Blue clay 
Bowlders ( sa ndstone ) 
Quicksand 
Blue marl 
Bowlders 
Thickness. 
From— 
Feet. 
Feet. 
6 

22 
6 
8 
28 
37 
36 
12 
73 
15 
85 
2 
100 
39 
102 
GO 
141 
2 
207 
To- 
Feet. 
6 
28 
36 
73 
85 
100 
102 
141 
207 
209 
