GEOLOGY OF MOOSE RIVER GOLD DISTRICT — WOODMAN. 51 



between the average dip of the strata on the north and on the 

 south sides of the axis is the same in divisions ii and iii. Thus 

 there is little distortion of the anticline by differential move- 

 ment. 



East fault: course; aspect at east quarry. — The east fault 

 runs N. 22° E. It is visible in the west end of the quarry on 

 areas 76 and 77, nearly perpendicular, with a very slight incli- 

 nation to the east. It is inconspicuous, as slate lies on both 

 sides. The fracture is a narrow zone, occupied by soft gouge 

 and bounded by well slickensided walls. The testimony of these 

 slickensides is conflicting, because of the various directions in 

 which solid masses in the gouge moved in different places, under 

 the influence of the crushing and slipping strains. In the Corn- 

 stock and Big South leads, the fault was met in earlier years 

 underground. 



East fault: displacements in southern part of field. — 

 Beginning at the south end in division iii, the position of the 

 axis of the south anticline is by continuation from a known 

 point in the western part of the block. It probably is not 

 dragged north by the east fault; for the south anticline is evidently 

 pitching east in the eastern part of division iii, as shown by the 

 converging dips on both sides of the axis, and the curve of the 

 Comstock lead is sufficiently explained by this. East of the 

 fault the axis has been displaced 192.5 feet north. Its position 

 is closely defined by a lead lately uncovered, west of the large 

 abandoned crusher ; and one somewhat similarly situated south 

 of the axis. Their convergence indicates the continued eastward 

 plunge of the fold. The offset of this axis is 185 feet left, and 

 its overlap 62.5 feet negative. This is the largest displacement 

 in the district, and northward the distances become steadily 

 less. 



The position of the main synclinal axis is'^indicated very 

 closely, the nearest exposures of opposite dip being only a few 

 feet apart. North of the large quarry only two exposures of 

 any kind are visible, till the North Sutherland ^is reached. 



