96 A GEOLOGICAL SUEVEY OF LANDS 



24. Blue clar and soapstone 166 



2-3. Coarse white sand 10 



22. Blue clay 10 



21. Common sand with some saltwater 10 



20. Blue clay 2.5 



19. Brown sandy clay 3 



18. White sand and shells 6 



17. Fine sand and white clay, the sand yielding some salt 



^ water, some gas and some oil 20 



16. Hard rock 3 



15. Fine white sand 3 



14. Brown sandy clay 4 



13. Fine hard sand 2 



12. Blue sandy clay 15 



11. Hard rock 3 



10. Blue clay and hard rock 10 



9. Blue clay 296 



8. Hard rock 3 



7. Coarse brown sand with pronounced odor of oil 30 



6. Blue clay 10 



5. Brown coarse sand with some oil and heavy pressure of gas 



spouting 60 — 80 feet 57 



4. Blue clay 5 



3. Asphalt 5 



2. Blue clay 15 



1. Chielly clay, with some porous, easily drilling rock at 745 feet 



below the curb of the well 265 



The strata penetrated are clearly of the kind which is re- 

 quired for the retension of gas and oil. Each of the two gas- 

 bearing sands have an impervious cover of clav, the lower of 

 which is nearly 3U0 feet thick and the upper 166 feet. The pres- 

 ence of asphalt below the lower sand indicates that distillation of 

 hydrocarbons have taken place in this sand at some earlier time, 

 for solid hydrocarbons are the natural residues of this process. 

 The thickness of sandstone makes the porous stratum quite 

 ample to hold a very considerable quantity of gas, if the stratum 

 has the neccessarN' shape and capping. 



The local structure which contains the gas in this well is in 

 my opinion a low arch, whose axis trends northeast and south- 

 west, and is at about a third of a mile south of the well. The 

 height of this arch must be near fiftj- feet. The outcrops 

 from which this structure was made out are not as clear 

 as might be desired. A sandstone which appears in the creek 

 rises about fiftv feet for the first half mile on a line running' south 



