TERTIARY. 435 



6. Quicksand 10 feet. 



7. White and blue clay 20 feet. 



8. Open space 5 feet. 



9. White sand 5 feet. 



10. Brownish clay 125 feet. 



11. Sand and gravel 1 feet. 



Total 265 feet. 



It will be seen from the above that the strata do not correspond with the 

 Cretaceous formation in other parts of the same district. 



A deep well was put down at Odessa. The following section was furnished 

 me by Mr. B. K. Brant, of Pecos City, who was at Odessa when the well was 

 put down, and who was in a position to know the facts in the case: 



1. SoH 4 feet. 



2. Rotten limestone 16 feet. 



3. Conglomerate . 4 feet. 



4. Sandstone, gravel, and sand 99 feet. 



5. Red clay 101 feet. 



Total 830 feet. 



In passing through the material before reaching the red clay, three strong 

 bodies of water were passed through. 



In the above section I think No. 2 belongs to the Tertiary, while Nos. 3 

 and 4 are Triassic, while the red clay is more than probably Permian. The 

 Triassic is the only formation in which I have seen any conglomerate and 

 pebbles in this part of the State, and the conglomerate beds elsewhere lie at 

 the base of the Triassic and immediately on top of the Permian. It might 

 be that the conglomerate, sand, and gravel were a part of the Trinity Sands. 

 In either case the Red Beds in which the last seven hundred feet of the well 

 passed are Permian, and there would be little hope of getting water in them. 



That the conglomerates are not Tertiary in the above section, I judge for 

 the reason that no siliceous pebbles have been found anywhere in the Ter- 

 tiary in the northwestern part of the State. The Carboniferous strata, and 

 probably the Permian, are seen on both the eastern and western sides of the 

 Plains; on the eastern side they dip to the northwest, while on the western 

 side they dip to the southeast. There is therefore a great interior Carbonif- 

 erous basin in which the newer formations have been deposited, and when the 

 the entire district shall have been examined it will probably be found that all the 

 observers have been correct in the reports made of the Staked Plains, and all 

 the formations from the Carboniferous to the Tertiary will be found to exist 

 in the localities from which the reports have been made, and that there will 

 be no conflict between the various reports. 



