GEOLOGY OF MOOSE RIVER GOLD DISTRICT — WOODMAN. 31 



appears to die out westward almost within tlie limits of the 

 field ; and which quite certainly ends on the east within a short 

 distance, although another has been found seven miles from the 

 mines. This is one of the unique features of the area, because 

 of the opportunity it offers for the study of the growth of folds ; 

 and is made possible by the presence of the broad horizon of 

 slate instead of the alternation of narrow well-defined bands of 

 slate and quartzite chai'acteristic of the other domes. 



The more northerly of the two main anticlines starts east 

 from West Mine with its axis taking a probable direction of N. 

 86° E. Where it crosses Moose river it has a strike of N. 89° 

 W. The more southerly fold starts east with a strike of N. 87° 

 W., and at the west end of the main field lies N. 84° W. This 

 gives an eastward divergence of 5° to the axes. Where they 

 cross the stream the}^ are approximately 525 feet apart. The 

 vicissitudes of faulting are described elsewhere. It may be 

 recorded here, however, that east of the westernmost main fault 

 the north anticlinal axis does not change its strike ; east of the 

 middle fault it lies for most of its way N. 86° W., probably 

 turning northeast somewhat, as do the beds to the north ; and 

 east of the third main fault it starts N. 88° E., but soon turns to 

 N. 82° E. The directions of this and the other six axes, at the 

 extreme east end of the district, are estimates based upon 

 observations immediately west and some distance east. The 

 south anticline starts directly east from the west fault ; but runs 

 northward somewhat, influenced but not intersected by the 

 middle fault, then strikes S. 87° E., to the east fault. Beyond 

 this the axis is sinuous for nearly 500 feet, finally straightening 

 out in a direction N. 87° E. Thus the axes diverge eastward at 

 5° here, also. The distance between them is the same as at the 

 west end — 525 feet. 



Lack of outcrops makes the position of the synclinal axis 

 between these folds problematical, west of the west fault. Inas- 

 much, however, as it is very definitely located everywhere else, 

 the position assigned, based upon data immediately to the east, 



