96 OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [bui.l 212. 
Log of Harley well, Jeff Chaison tract, Jefferson County, Tex. — Continued. 
Character of strata. 
Thickness. 
From— 
To- 
13 
Rock - - 
Feet. 
4 
30 
50 
65 
77 
1 
9 
16 
42 
5 
15 
1 
4 
29 
8 
12 
24 
50 
18 
19 
29 
110 
2 
10 
56 
8 
10 
4 
3 
i 
35| 
10 
199 
i 
5| 
46 
3 
Feet. 
256 
260 
290 
340 
405 
482 
483 
492 
508 
550 
555 
570 
571 
575 
604 
612 
624 
648 
698 
716 
735 
764 
874 
876 
886 
942 
950 
960 
964 
967 
967* 
1,003 
1,013 
1,212 
1,212* 
1,218 
1 1,264 
Feet. 
260 
14 
Soft blue clay with log at 290 feet; yellow 
streaks and some shells 
290 
15 
Yellow clay with log at 340 feet . 
340 
16 
Sand - 
405 
17 
Blue clay . - 
482 
18 
Hard rock . . 
483 
19 
Soft blue clay . ... ... 
492 
9,0 
Sand . . _ 
508 
?1 
550 
22 
93 
Sand 
Yellow clay _ .. . 
555 
570 
94 
Lignite 
571 
9,5 
Sand 
575 
96 
Clay 
604 
9,7 
Hard rock _ ... 
612 
9,8 
Soft blue clay _ . 
624 
99 
Shale rock . . 
648 
30 
81 
Blue clay and shale, very hard in streaks 
Fine white sand . . . . ... 
698 
716 
32 
33 
Hard blue shale with thin layers of sand 
Shale mixed with coarse sand; sand sharp 
with black and yellow specks 
735 
764 
34 
White sand; upper 30 feet hard in streak, 
last 30 feet showing black specks 
874 
35 
Blue clay 
876 
36 
Coarse sand . . . 
886 
37 
Blue clay with some shale _ _ 
942 
38 
Sand 
950 
39 
Blue shale with shells 
960 
40 
Sand with indications of oil 
964 
41 
Blue shale 
967 
49, 
Hard white rock- 
967| 
43 
Soft blue clay and shells _ . 
1,003 
44 
Sand 
1,013 
45 
Soft blue clay, with yellowish sand and lig- 
nite and shells, indications of oil at 1,065- 
1,071 
1,212 
46 
Rock 
1,219 
47 
Fine white sand _ 
1,218 
48 
Blue clay 
1,264 
49 
Fine white sand 
1,267 
