38 GEOLOGY OF MOOSE RIVER GOLD DISTRICT — WOODMAN. 



of the large one, but this has itself been made compound by the 

 sinking of a syncline on its summit. On area 75 a small 

 quarry shows this puckering to a slight extent. In this case, 

 however, the dips on the nortli side are very low, not over 10'^. 

 The same condition obtains in a tunnel which runs from the 

 floor of this quarry, eastward under the road to a new quarry on 

 area 76. 



Division Hi: south anticline. — South of the Jo. Taylor 

 belt, the dips vary on the same horizons, steepening westward 

 and becoming lower eastward. Thus the Dreadnaught slate 

 belt, Mdiich has a dip of 45° S., south of the quarry, has only 20° 

 one area to the east. The Dry belt, which dips 80° N. at the 

 north end of area 30, declines to 50° and 35° eastward. The 

 Moleskin changes from 70° to 35° at the extremities of its 

 developed portion. The bearing of this may be seen by comparing 

 with these dips the distribution of dips along the horizon of the 

 Jo. Taylor belt east and west of the middle fault. From such 

 comparisons it appears that both the middle and south anticlines 

 plunge eastward steadily, th(? former rapidl}^, the latter at a 

 lower angle. 



Little is to be said of the south dips on the south anticline. 

 The Comstock has 60° S. near the east end, becoming somewhat 

 steeper westward. The Root Hog was opened in 1899, and has 

 not been developed far enough to show a diminution of dip. 



Division Hi : details from trenches. — The best data for 

 parts of this division have been obtained from two trenches cut 

 in 1899 on areas 30 and 71, to develop the structure. The Jo, 

 Taylor belt consists of several leads, of which the hanging and 

 foot-wall ones are easily distinguishable. The belt averages 

 seven feet in thickness. The hanging wall lead is exposed east 

 of the middle fault in a small pit at the end of the east embaytnent 

 of the quarry, area 71 ; in the smaller circular pit to the north, 

 and again at tlie south end of the north trench (pi. 7, fig. a). 

 Near the north end of this trench the foot-wall lead has a dip of 

 60° S. South of the axis of the small synclinal sag, it appar- 



