50 OIL FIELDS OF TEXAS-LOUISIANA COASTAL PLAIN, [bull. 212. 
toD East and West Texas Railroad, between Clark's ferry crossing 
and Moscow, the following section occurs : 
Section on Houston East and West Texas Railroad between Clark's ferry and 
Moscow. 
Frio: Feet. 
1 . Coarse gray sand 50 
2. Laminated blue and white sand 15 
Fayette: 
3. Brownish- gray to yellow sandstone, gradually losing its brown tint 
as it nears the base. The upper, brown division is thinly laminated 
and contains plant impressions and nodules of pure clay. The lower, 
gray division contains clay nodules but no plants; 4 feet in railway 
cut, but 15 feet in Hitchcock's quarry 20 
4. Gray sand '. 22 
5. White limestone containing casts of Venericardia planicosta and other 
shells 2 
6. Indurated gray sand or soft sandstones 
7. Gray cross-bedded sands 35 
8. Gray sands with opalized wood 25 
9. Laminated pink clay 6 
10. Gray laminated and grayish-brown sand . 2i 
11. Gray sandy clay 3 
12. Gray sandstone 3 
13. Shaly gray clay 1 
14. Gray and yellow sand 3 
15. Light-yellow or cream-colored clay 2 
16. Thinly laminated gray sandstone 3 
17. Brown laminated clay 3 
18. Thinly stratified white or gray sandstones ... 1 
19. Gray sandstones stained brown -.. 3 
Yegua: 
20. Thinly stratified or laminated blue clay with gypsum in crystals 35 
At Rockland these beds give the following section : 
Section at Rockland. a 
Feet. 
1. Gray sand and siliceous pebbles 18 
2. Mottled blue and brown sandy clay 20 
Frio: 
3. Green sandy clay 20 
4. Brown sandy clay 20 
5. Pale-blue sand and clay 15 
6. Dark-blue clay with lime concretions 20 
7. Drab-gray sandy clay 30 
Fayette: 
8. Gray sandstones, coarse grained on top but changing to a fine-grained, 
blue, hard quartzitic stone at base 120 
In this section the Frio clays overlie the Fayette beds and are in 
turn overlain by the blue and brown sands and sandy clays seen at 
Colmesneil. 
« Third Ann. Rept. Geol. Survey T^xas* l§93, pp, 61. 120, 
