44 GEOLOGY OF MOOSE RIVER GOLD DISTRICT — WOODMAN. 



the fault at the south side of the field is inferred. The leads in 

 the drain on area 32 all have high north dips, as far as seen by 

 me, and correspond closely to leads in the trench on area 

 30. Directly east along the strike of the former, however, the 

 leads dip south. Hence the fault must run east of the drain ; 

 and probably not far east, because of the considerable change in 

 strike of the fault involved. Taking this into account, I have 

 plotted this portion S. 8° E. 



West fault : details of displacements. — The horizontal dis- 

 placement at the north end of the section is believed to be small, 

 because the Alex. Taylor has dips which would be expected in a 

 lead at the distance south of the anticlinal axis here represented. 

 Were this axis much nearer, the surface dips should be less. At 

 the south end the positions of the synclinal and anticlinal axes 

 in division ii are known with great exactness. That of the anti- 

 clinal axis in division i is known quite closely, by reason of the 

 strata at the Touquoy crusher and the leads in the trench. From 

 these data the horizontal displacement of the southernmost axis 

 is calculated to be 50 feet. This gives a positive overlap of 10 

 feet, and offset of 47.5 feet to the left. These functions have not 

 been computed for the northern anticline, because so small and 

 so problematical. 



West faidt : direction of motion. — The determination of the 

 direction of motion along the fracture receives little aid from 

 the exposures in the open quarry on area 169 and the west 

 stope of the Big North ; for here the fault is a zone, the gouge 

 of which is composed of pieces that have moved in various 

 directions. Dips must be used as far as they give evidence. 



(1) In a vertical motion of translation, if the east side rose, 

 the axes of the main anticlines east of the fault would, upon 

 denudation to the present level, migrate southward. Such evi- 

 dently is not the case. If the east side fell, the axes would 

 migrate south wai'd on the west. On account of the obvious differ- 

 ence in inclination of these axes the northern one, having a lower 

 dip, would migrate the farther, and the two axes would be 



