GEOLOG
The vockathought to be the olileat in the region and hic
are regarded us pre-Ordovic an, occnr ulong the part of th Pelly vieer shown in the southiwestern corner 0j the br They sem to be rongfined to ‘area and do not appear the north thongh jose Lo th uthaicest on Finlangson 1: ‘ While certain altered intrusires and voleunies re press the rocks are mainly 6f « entarny types but rayct altered, having nn cruyatatti torture and à nsrhistus structure. Quartz-miea schists 6j à dark gren ur yrernia colour are the communvat va tien and ailthe rocks are cu
by quartz reins and ntringers
The Mackentie mountéins are made up mainém « mes i mtery rocks irebuuli shutes, xlaten, cherte, # stoncs, conglomerates, Limestones and dotumites. They 4 all of lalurozoic age, ranging jrom Up} Cambrian Middle Derunien die greuter pré 6j Che dre ertentd ins
fromthe L'elly vallon to Mount Sekari on the travel rive és nndertain by xhuies and siates, accompaniet by quartzit and 4 highly indurated, bedded rock referred to us u che
Graptolites 0j Upper Ordovician age were jound in blu
shaleon un boss priver about jite miles belote John lake band, sererat niilesx vrids J sanidstone, ji gt rfz glomerate, quurtzite ane director roases l'elly rirer ên t/ riconityes Wodj canon and, es léng in a northires direction, crosses Koss river at L'; oat canon and Mia milan river near the forka. A band of similar rocks cross Meuart river at the Tasin mountains These rocka are sed to be 0j Later du than the graptolite bearis shules 0j Hoss river and muy be Silurian., Cher breccius orertying states au vhevin, from the greater part of nu» of the high untæins of the Seluign range, and a jéue bec
of the ntsne minutes
l'agarrguiing about 20 feet in thirckme orerlie states at Slate rapid ou l'elly river, The sedimente rocks, «fl various points, are intra 4 by small botdirs igneous rocks, À Ovcrember of higher mountain peuke ar Uof y high peukx and mountain groups owe their height an
known to be comp anite and doubtless many othe
ruyggedness to this cause.
The strata 06f the western portion of the Mackenzie mountains havre, though 1rith many minor deviations, 1 general northirvest strike and dip at various angles either t the northeast or southivest fs auvhole, they are broc fotded.but in places the jolding ia close, There is evidence of Jaulting, and the repetition of similar beds till, over long distances, the san inclination, may be due to vrer
turned jolis,
£'xplorations ant Geologv br :
Map compilation
G M Dawson, 2887
RG M!Cennell 7292, 290:
J. Keele, 902,790, 19 27, W. Ogilvie, 2248.
J. Keele . 1908.
“ur nzie 18, er Le « ere ore ve
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