42 UNIVERSITY OF MISSOURI STUDIES 



downward cutting of Calico Creek and its eastern branch has 

 exposed the upper part of the Elvins formation along these 

 streams. 



The folding accompanying the development of these anti- 

 clines appears to have been sharp. The beds on Maddis Creek 

 soon assumed a nearly horizontal position, as did those on the 

 Calico near Fletcher. The same thing was apparently true in the 

 sharp monoclinal fold near Vineland. This feature is well shown 

 in Furnace Hollow, the small valley opposite Kingston. About a 

 quarter of a mile east of this valley the beds dip southwest with a 

 dip of about ly^°. East of the creek about 300 feet they dip 8°, 

 while in the creek bed they dip 15° S. W. Within about 500 feet 

 along the bluff west of the valley the beds have again assumed 

 their slight westward dip. This shows that the anticline is a 

 broad fold with sharp almost monoclinal flexures on each side. 

 It should be noted also that the anticline along its southern half, 

 from Calico Creek to Mineral Fork, plunges rather strongly to 

 the southeast. This accounts for the rapid rise of the Elvins for- 

 mation above Furnace Hollow. 



The beds involved in the faulting in the Stony Point area 

 dip rather steeply near the faults, but, since the present attitude 

 appears to be due to the faults, their position will be discussed 

 in connection with the faults. 



Faults 



In each case where faulting was observed in the area, the 

 throw was not great, altho in some cases the displacement was 

 more than 100 feet. There are only two such faulted or dis- 

 turbed areas, the Fertile area and the Stony Point area. 



The Fertile or^a.— Faulting in this locality has produced a 

 more extensive outcrop of the Elvins formation than there would 

 have been normally, The faults enclose a block about four 

 square miles in area. Not all of the faults delimiting this block 

 have been definitely located, as the map shows, but their pres- 

 ence is demanded by structural relationships. In every case the 

 fault planes dip steeply. A dip of 76° was determined in two lo- 

 calities, but as far as could be determined it is greater than this in 

 other places. In all cases the fault planes dip away from the 

 fault block. Along Fertile Creek, the fault planes and fault 



