TIN. 



601 



Fig. 68. 



Plan and section along line M-N of map (Plate XXI), showing some of the complications in 



the structure of the eastern end of the Tin Belt. 



Figure 68 illustrates some of the complexities of the region south and south- 

 west of Barringer Hill, Llano County, and Figure 69 exhibits the structure in 

 the region around Shaft Mountain, Mason County. The courses of the 

 breaks and faults are correctly drawn and their relative ages properly indi- 

 cated, but the exact details of the underground features can not be vouched 

 for wholly, as the hade of the joints has not been closely studied in many 

 cases. Tho general aspect of the country and its geology, however, are cor- 

 rectly portrayed in these cuts. 



FER 

 ma> * TEXAN 



B URNETAN FERNAND ASltfad 



►4 BNn 



Fig. 69. 



Plan and section along line O-P of map (Plate XXI), showing structure in neighborhood of 

 Shaft Mountain, Mason County, and southward. 



