Page 42 of 106
44
RIO GRANDE COAL FIELDS OF TEXAS.
[bull. 164.
Prospect drill No. 6, at Pilot ranch, 25 miles west of north from Santo Tomas, and 3 1-2 miles from the Rio Grande —Continued.
Section at the Santo Tomas coal mine {Rio Grande Coal and Irrigation Company). *
The Cannel Coal Company's mine is about 3 miles below Santo Tomas. Through the courtesy of Mr. D. D. Davis, the manager, the writer was enabled to make the following section:
Section at mine of Cannel Coal Company, 3 miles below Santo Tomas.
In this mine there is a small fault, and along the plane of the fault ing there is a small sandstone dike. From prospect drill No. 2, between 83 and 90 feet, Mr. D. D. Davis had obtained and preserved some fossil mollusks, which he presented to the Survey. They were referred to Prof. G. D. Harris for deter mination. He says they belong to an undescribed fuana, and has not yet furnished any identifications.
1 Mr. D. J. Roy, manager of this mine, rendered much assistance and showed us many courtesies while we were in Santo Tomas. It was through his kindness that we were enabled to examine the mine.
Depth.
Material.
Thickness*
Ft.
in. Ft.
in.
Ft.
in.
237
5-238
0
Bone
0
1
238
0-244
0
Sandstone
6
0
244
0-246
0
Brown shale
2
0
246
0-254
0
Brown sandstone
8
0
254
0-255
0
Blue shale clay
1
0
255
0-262
0
Sandstone
7
0
262
0-268
0
Blue shale clay
6
0
Ft.
in.
7. Carbonaceous shale roof; shale soft and requires considerable timbering.
6. Good coal 0
14
5. Bone 0
4
4. Good coal 0
14
3. Bone 0
6
2. Clay «. 7 1. Sandstone.
0
(See fig. 6, p. 54.)
Ft.
in.
8. Clay slate or sandstone 0 7. Carbonaceous shale 0 6. Good coal 2
14 0
5. Bone 0
15
4. Clay.-.. ,.. 2
0
3. Lower bench:
c. Good coal 0
6
b. Bone 0
2
a. Good coal % 0
11
2. Carbonaceous shale 0
3
1. Sandstone 14
0
