H k^ne£? D ] detailed sections. 57 
assume a laminated condition and overlap the underlying Frio beds 
for several miles. In a laminated or mottled condition they also 
appear in Louisiana. In the Texas region they occur mottled in the 
railroad cuttings between Call and Roganville. North of Roganville 
they are laminated, and they lie in contact with the Frio calcareous 
clays near Walnut Creek a short distance south of Jasper. North of 
Burkeville, in Newton County, a section on the AVilliam Williams 
survey is as follows : 
Sectio?i on William Williams survey, north of Burkeville, Newton Count//, Tex. 
Feet. 
1 . Brownish sands weathering white on the higher grounds 7 
2. Variegated bine-brown and white clays in thinly laminated condition, colors 
about equal in thickness and not exceeding half an inch. 2 
2. Brown sand mottled with blue 15 
4. Thinly laminated white, brown, and blue clays similar to No. 2_ . 5 
5. Ferruginous sandstone. 
Near the town of Warren, in Tyler County, these beds are seen in 
contact with the Columbia sands in the following section in a well: 
Section near Warren, Tyler County, Tex. 
Feet. 
1. Red sand with spots of blue 40 
2. Grayish-blue sand i 
3. Coarse brown sand with pink clays . 2 
4. Pinkish-red sandstone with soft gray water sand . : 8 
Few deep wells have been drilled in the regions occupied by these 
beds, and until now only one has been bored for petroleum-prospecting 
purposes. 
Log of well drilled between Rush and Wolf creeks, about 2 miles from Neches 
River, in Tyler County, Tex. 
Character of strata. 
Clay.. 1 
Sand and gravel 
Clay 
Coarse sand with some gravel 
Blue shale with sight indications of oil and gas 
Blue sand 
Thickness. From 
Feet. 
Feet. 
Feet. 
8 

8 
160 
8 
168 
4 
168 
172 
428 
172 
600 
60 
600 
660 
164 
660 
824 
To— 
No division of this record is possible, but from the depth it must 
have been drilled through the Fayette sands, the last 224 feet at least 
apparently belonging to that division. 
The eastern extension of the gray, white, bluish-gray, and yellow 
sands and accompanying yellow and blue clays of the Columbia finds 
