3IO H. C. COOKE 



places; the dip and strike of the greywacke parallel those of the 

 conglomerate. 



, It is evident therefore that these rocks, with those on the 

 Larder townsite, are parts of a small tightly folded syncline, the 

 axis of which has a north-south strike between the village and 

 the Harris-Maxwell mine. It was also apparent that they lie un- 

 conformably on the greenstones, as the rhyolite, basalt, jasper, 

 and iron formation are all members of the underlying volcanic 

 complex. 



A mile and a half to the east, on Pearl Point (Fig. 2) normal 

 conglomerate and slate of the Cobalt series outcrops. The con- 

 glomerate is massive, at least 100 feet thick, and crowded with 

 pebbles of all sizes. From 75 to 90 per cent of the pebbles are 

 granite, the remainder other rocks. The conglomerate dips 15 

 degrees to 20 degrees, and is overlain by the normal argillite of the 

 series, fine grained, black, and well bedded, containing an occasional 

 pebble. The composition, succession, and structure of these rocks 

 is so utterly different from those at Larder Village only i^ miles 

 away that it is difficult to conceive them to be of the same 

 formation. 



Accordingly the writer returned to trace northward the band 

 of conglomerate that passes across the Larder townsite. It runs 

 somewhat east of north for about half a mile, then swings to the 

 east across a drift-filled valley, on the other side of which it was 

 easily picked up again and traced a short distance farther north, 

 till, turning west, it passes beneath a large sand plain. Two miles 

 to the west it has been mapped by both Wilson and Burrows on 

 the shore of the Blanche River. 



About half a mile to the north of the Harris-Maxwell mine 

 (Fig. 2) an interesting set of relations occurs. The basal band of 

 conglomerate, composed as before mainly of pebbles of rhyolite, 

 jasper* and iron formation, here striking south 40 degrees east and 

 with vertical dips, is overlain conformably on the east by inter- 

 banded greywacke and conglomerate, the conglomerates gradually 

 becoming finer grained, passing into coarse grits and then into fine 

 grits. Above the grits and greywackes occur some hundreds of 

 feet of soft, slaty argilHtes, whose strike and dip parallel those of 



