SKAUGHAN.] 
UPPER CRETACEOUS FORMATIONS. 
25 
Section of artesian well bored on the top of the hill -J utiles northeast of Eagle Pass, between 
the Uvalde and Carrizo Springs road. ' 
LO 
jagfrffwg 
Fig. 3.— Section 
of Eagle Pass 
artesian well. 
Soil and subsoil 
Yellow clay 
Bluish clay 
Sand, with some gravel 
Black shale, with 6 inches of coal 
Clayey sand 
18. Gray sand 
17. Sand, small gravel 
16. Sand 
15. Gray slate 
14. Dark shale 
13. Coal 
Dark shales 
White sand (gas) 
Black shale 
Sand and shale 
Black shale 
Sand and shale (gas) 
Dark soft sand and shale 
Hard gray sand (salt water) 
Gray shale 
Gray sand 
Calcareous clay 
Dark clay 
Feet. 
14 
26 
50 
110 
60 
70 
30 
60 
20 
30 
55 
6 
9 
40 
150 
15 
135 
15 
75 
10 
50 
10 
370 
102 
Total 1,512 
Nos. 24 to 8 represent the whole thickness of the Coal series; 
Nos. 8 to 1 belong to the San Miguel beds. 
About 100 feet north of Burr's ranch, 14 miles north- 
west of Paloma siding, is an exposure of brownish or 
greenish-yellow fossiliferous sandstone underlain by 
clavs. The section is of somewhat doubtful strati- 
graphic position, but it would seem to belong in the 
Coal series, and probably below the coal horizon. 
The following fossils have been determined by Mr. 
Stanton from the collection made here: 
Trigonia sp., single cast of a young individual. 
Area? sp., single cast of a young individual. 
Cardium eufalense Con.? 
Tellina sp. 
Cytherea? sp. 
Veleda lintea Con.? Common at Corsicana. 
Mactra sp. 
Corbula sp. 
Dentalium sp. 
Lunatia obliquata M. and H. Common Ripley species. 
1 Report cm artesian waters, etc., for Texas west of ninety-seventh degree of longitude, by Frank E. 
Roessler, 1890, Senate Ex. Doc. No. 222, Fifty-first Congress, first session, p. 266. 
