SHELBY COUNTY. 253 



Wolf's Mountain, eight miles south of Timpson, one and one-half miles south- 

 east of C. Silas Baine's residence, on the A. C. Thornberry headright (See 

 Fig. 19). 





mwm 





Fig. 19. 



WOLF MOUNTAIN SANDSTONE. 



A . Soil, sand 2 feet. 



B. Iron sandstone . 2 feet. 



C. Cross-bedded ferruginous sandstone .... 4 feet. 



D. Soft ferruginated sandstone 4 feet. 



E. Sandy clay to base. 



F. Fragments fallen from B. 



Some of the iron sandstone material in this vicinity is porous, and has a 

 tendency to geodic structure. Iron geodes of large size were found at a 

 lower horizon, on the sides of the adjacent hills. 



"Potleg" iron ore was seen in one locality in the neighborhood. The 

 material is similar to that of the iron sandstone, and in form these potlegs 

 are generally elongated thick-walled tubes with branches. The hollow is 

 usually small and axial. They were probably formed around small roots and 

 stems as nuclei. The gossamer-like remains of such stem were seen on break- 

 ing a fragment afterward in another county. In this case the small potleg 

 was included in orange loam. 



A fragment of wavy laminated iron ore was found seven miles south of 

 Timpson. It was possibly a float specimen, as no exposure of it was observed 

 in connection with the iron sandstone. 



DISTURBANCE. 



Aside from the tumbled condition of the iron conglomerate and the iron 

 sandstone, no other evidence of disturbance in this county was noted, except 

 that of the lignite bed, already referred to, in the northeast corner of W. J. 

 Crump's headright, near the headwaters of a small tributary of Attoyac 

 Creek. The little stream has cut through a considerable portion of the bed. 

 The peculiarity of this bed, partly exposed, is the exhibition of numer- 



