3o6 A. E. PATH 



uplifts is the sharply flexed Camp Creek syncline, which lies only 

 a few miles south of the Ferris and Seminoe mountains. It par- 

 allels the direction of the fault line along the southwest side of the 

 Seminoe Mountains. North of this syncline there are no minor 

 folds on the south slope of the Sweetwater uplift, but instead the 

 abrupt upfold and thrust of the uplift itself, which is represented 

 topographically by the Ferris and Seminoe mountains. South of 

 the Camp Creek sycline the Rawlins uplift is represented by a 

 long, comparatively gentle slope up to the granite axis of the 

 upfold in the Rawlins Hills. This gentle north and northeast 

 slope is interrupted by minor folds, including a long upfold that 

 extends from the Wertz dome at the west and is accentuated in 

 its eastward course by the Mahoney, Ferris, and G.P. domes. 

 As the surface rocks are concealed by dune sand and alluvial wash 

 the exact course of this upfold is not well known except at the high 

 points mentioned. The axis of this upfold is parallel not to that 

 of the Rawlins uplift but to that of the Camp Creek syncline, 

 which in turn lies parallel to the Ferris-Seminoe line of deformation. 

 From this close parallelism of structure it would appear that this 

 minor upfold is the result either of the same forces that produced 

 the Ferris and Seminoe mountains or of similarly directed forces. 

 Certainly it could not have been the result of the forces that formed 

 the Rawlins uplift. The north flanks of the Wertz and Mahoney 

 domes and the northeast flanks of the Ferris and G.P. domes are 

 steeper than the opposite flanks, a relation which also helps to 

 indicate that the forces which formed them probably came from 

 the north and northeast. To the north of the Wertz dome is the 

 small Bunker Hill dome, which lies parallel to both the Wertz 

 dome and the Camp Creek syncline. The course of the synclinal 

 fold lying immediately south of the Wertz-Mahoney-Ferris-G.P. 

 upfold is not clearly defined, although the syncline that separates 

 the Mahoney dome from the Sherrard dome, and the Wertz dome 

 from the Lost Soldier dome, is probably the westward extension of 

 the Table Hills syncline. It was this downfold which divided the 

 north end of the Rawlins uplift and formed the Lost Soldier dome 

 as a distinct feature from the Wertz-Mahoney-Ferris-G.P. upfold, 

 to the east. By considering the Table Hills syncline to have a- 

 westward extension, as above mentioned, its course also shows a 



