190 RESOURCES OF TENNESSEE. 



some that the rocks in the West No. 1 well indicated that instead of the 

 usual rise of the rocks to the west, there was a reversal of dip between 

 it and the Toomey and Hendren wells, but the logs of these wells as 

 plotted in Fig. 3 fail to bear out this idea, but show instead a westward 

 rise of the rocks from the Toomey No. 2 well to the West No. 1 as is con- 

 sistently indicated by the base of the Lee, the top of the Newman, the 

 brown oil sand and the oolitic limestone, the positions of all of which are 

 given in the figure. The relative positions of these wells are given in Fig. 2. 

 From the Hendren No. 1 well to the Toomey No. 2 there is a slight west- 

 ward dip that would probably aid in arresting the movement of any oil 

 that might be migrating up the general dip. Unless there is a continua- 

 tion of this reversed dip east of the Hendren No. 1 well, it would not be 

 sufficient to completely trap the oil, since the reversal shown in these wells 

 amounts to less than the thickness of the oil sand. 



In the Wayne County, Kentucky, oil fields there are very plain indica- 

 tions of a secondary structure consisting of a cross wrinkling or corru- 

 gation, as it were, with its axes running in the general direction of the 

 dip of the major structure of the region, and such secondary structure 

 may also characterize this region. 



There is some evidence from the surface rocks about the Toomey wells, 

 and for a distance of about a mile back toward Oneida that the broad 

 general westward rise of the rocks previously spoken of, has been par- 

 tially arrested, and that this group of wells, especially the Toomey Nos. 

 1 and 2 and the Hendren No. 1 have been drilled on a structural terrace. 



In some places in this general region a slight doming occurs, as is shown 

 in some coal seams, but no work has been done around these oil wells to 

 show either the presence or absence of a structural dome about them. 



! 



HIE OIL SAND. 



Microscopic examination shows that the oil "sand" is not a sandstone 

 as it was at first thought it might prove to be. The two "sands" that 

 appear porous when examined with a hand lens are the siliceous magne- 

 sian limestones at 848 to 853 feet depth in the West No. 1 well and at 945 

 to 950 feet in the Toomey No. 2 well. The oil "sand" from 946 to 964 

 feet in the Hendren No. 1 well is almost a pure limestone. 



