DESCRIPTIVE NOTES

the Pelly river during high eater, is navigable by small stesmbhoats jrom the Yukon to the mouth 0j Hons rirer, «4

distanve of 250 mil The HMacmillan ts narigable as far

asthe jorka, 155 miles jromthe l'élu. Small boats or caness can be polrd or tracked up tar Pelly Jer at lrast 180 miles from the mouth of Hoss river oith portage at Hoole and Wolf cañons. On Hoss river, Sheidon lahe is the limit of boat navigation when the water is lo but in high stages, John lake or even Wilson Lake, von Le reached., Helorr Lenes lake there is à stretch of 20 miles 0f atift cater, 1réth four

short rapids past which goods are portaged. The Gravel

river may be descended by bout from Isichu broek to the rieer mouth, preferably at Ligh water but it is prartically

impossible to take a loudert boat up river

GEGLOGY.

The rocks thosghtto be th. test in the region and which

are regarded 22 pre-Ordoric on, occur along the partofj the lelly river shourn in the sosthuwestern corner 0j the map. Then scem to be confined to sarea and do not appear to the north though found to the southttest on E intauson rirer. While certain altered intrusires and volcanica are present, the rocks re mainly of nolomentary types but largely altered, having & cruatalli rture and a avchistose

structure, Quartzméen sehis a dark gren or greenish colour are the commonest rarities nd altthe rocks are cut

by quartz reins and stringers

The Marckenvie monuntans are made up mainly of sedimentary rocks inclurdi “hales. states, cherts, sand-

stones, conglomerutes, limestones and dotomites. They are

ali of Palarozoic age. ranving jrom Upper Cambrian to Middle Devonian, 4! eater paré 0j the arr ertending from the Pelly rallen unt Schari on the Gratrel river, és underlain by shatex lates, accompanied by quartzites and ue highln indurated, bedded rock referred to us t chert.

Graptolites of Upper Ordotcictan age tese jound in back ? f Up} /

älisilés oi ftüss band, several miles vide, 0j sandstone, Jine quartz conglomerate, quartaite und limestone, crosses Pelly riterinthe cicinityof Woij cañon and, ertending din «a northirest dirvertion, crosses Roxs river at lroroat cañon and Marmillan river nearthe forks. À band of similer rocks crosses Stewart river at the Tusin mountains, These rocks are supposed to be ef later date than the grapt dite beuring shalex of Ross river and may be Silurian. Chert breccits, overluing states and cherts, from the greater part of some of the high mountains 0j the Seliwyn range, and a fé brds ofthe same vaterial aggregtting about 20 feet in thichnes

everiieslates at Slaie rapid on Pelly river. Thesedimentary

rocks, at various points, dre intrudrd by small bodies of

lhe gerolet mous :ins, f foathills of th thattothe rues sandstonse dan colours, are t and Derontian Of the fossil ] Billisasgsrlla Cambrian ho) ere found os Liritya rire

énitoridted bre set

The strate mountarins ha railing dip b the strata ho forms net én ?

tainx of southe

The region ês credertain Upper Cretar Prinecipally s0 beds are eith

Tertiary beda

Indication interest re Mackenzie Gravel à jeu

Crops from be

ertends jor ad associated ror probably nd mountains rt descending oi ore outcrop; Broun, »

Congionn…s

Hematite

Girett, rot

In 197 ñ terre work 89. a day

ronjinerd