PRE-CAMBRIAN OF NORTHERN ONTARIO AND QUEBEC 323 



about 3 miles to the east of Kenogami, are markedly different 

 from the basal beds, in that the pebbles are mostly small and 

 very sharp angled, so that the rock at first glance gives the im- 

 pression of a breccia instead of a conglomerate. Cross-bedding is 

 frequently found here, and in general the beds are only a few- 

 inches or feet in thickness instead of being thick and massive. 



The writer has been unable to make any personal examination 

 of the Timiskaming in Lebel and Gauthier townships, but 12 miles 

 to the east, in the western end of McVittie Township, the stratig- 

 raphy of the series is notably different from that described. The 

 series in this third locality is well exposed on the north side of the 

 syncKne, on Binney Lake and eastward. On Binney Lake there 

 is approximately 600 feet of interbedded conglomerate and grey- 

 wacke at the base, striking north 80 degrees east and dipping 60 

 degrees south. The composition of the conglomerate is approx- 

 imately the same as at Kenogami, but instead of being in thick 

 massive bands it forms bands a few inches or feet in thickness, 

 inters tratified with greywacke. Only one heavy band of con- 

 glomerate was observed; it may be about 100 feet thick, and 

 Hes near the top of the conglomerate-greywacke complex. The 

 remainder of the section is all massive, thick-bedded greywackes, 

 except at the center of the syncline on Marjorie Lake, where there 

 are some very impure quartzites, now partially altered to sericitic 

 schists. The thickness of the latter was not measured, but is not 

 over 500 feet at most. The total thickness along this section is 

 about the same as in Teck Township, 3,600 feet. 



The series maintains the same composition for about 2 miles 

 to the east of the Binney Lake section, except that in this distance 

 the central schistose quartzites become much purer and whiter. 

 About 2 miles to the east of Binney Lake, however, and eastward 

 past Malone Lake as far as Bear Lake the amount of basal con- 

 glomerate becomes much larger. The thickness of the basal part 

 is perhaps not any greater than at Binney Lake, averaging about 

 600 feet; but instead of containing a great deal of greywacke, the 

 whole thickness is of massive conglomerate, while occasional beds 

 of conglomerate were also found in the greywacke for more than a 

 quarter of a mile south of the main conglomerate band. Little can 



