Misplaced Pages

#908091

15-664: The Little Iskut Formation takes its name from the Little Iskut River , a tributary of the Iskut River which flows southeast from the southern end of the Mount Edziza volcanic complex . The Little Iskut Formation has a volume of 14.6 km (3.5 cu mi), making it the seventh most voluminous geological formation comprising the Mount Edziza volcanic complex. It occurs at the northeastern end of

30-491: A number of unnamed tributary streams. The one named tributary, Gerlib Creek , joins Bourgeaux Creek from the north, about 5 km (3.1 mi) upstream of Bourgeaux's mouth at the Little Iskut River. Artifact Ridge lies on the south side of Bourgeaux Creek's watershed. Significant mountains on the north side include Hoyaa Peak , Esja Peak , Armadillo Peak , Tadeda Peak , and Cache Hill . Bourgeaux Creek

45-921: A small symmetrical shield volcano during the Miocene. The Little Iskut Formation conformably overlies the Raspberry Formation south of Bourgeaux Creek . Little Iskut trachybasalt is overlain by rhyolite of the Armadillo Formation and basalt of the Nido Formation. Two subunits comprise the Little Iskut Formation; the upper unit consists entirely of trachybasalt lava flows while the lower unit consists of abundant breccia. K–Ar dating has yielded an age of 7.2 ± 0.3 million years for Little Iskut trachybasalt. Little Iskut River The Little Iskut River

60-632: Is a tributary of the Iskut River in the northwest part of the province of British Columbia , Canada , in Cassiar Land District . From its source at Little Ball Lake in Mount Edziza Provincial Park , the Little Iskut River flows about 45 km (28 mi), generally north to the vicinity of Mowdale Lake, then southeast and south to the Iskut River just below Cascade Falls . The Little Iskut River

75-625: Is estimated at 3.46 m /s (122 cu ft/s). Its watershed covers 104 km (40 sq mi) and is entirely in Mount Edziza Provincial Park . The watershed's land cover is classified as 37.7% barren , 29.0% conifer forest , 14.8% shrubland , 13.0% herbaceous , 4.6% snow / glacier , and small amounts of other cover. The mouth of Bourgeaux Creek is located about 60 km (37 mi) southeast of Telegraph Creek , British Columbia, about 110 km (68 mi) south of Dease Lake , British Columbia, and about 250 km (160 mi) southeast of Juneau, Alaska . Bourgeaux Creek

90-621: Is in Mount Edziza Provincial Park , which lies within the traditional territory of the Tahltan First Nation , of the Tahltan people. Bourgeaux Creek originates on the east side of Raspberry Pass , about 25 km (16 mi) south of Mount Edziza . Raspberry Pass forms a boundary between the Spectrum Range to the south and the Mount Edziza area to the north. From its source, Bourgeaux Creek flows east, collecting

105-571: Is part of the Stikine River drainage basin , as the Iskut River is a major tributary of the Stikine. The Little Iskut River's watershed covers 453 km (175 sq mi) and its mean annual discharge is an estimated 12.8 m /s (450 cu ft/s). The river's watershed's land cover is classified as 36.8% conifer forest , 27.9% barren , 17.3% shrubland , 10.3% herbaceous , and small amounts of other cover. The mouth of

120-519: The Spectrum Range where it covers a roughly 10-kilometre-wide (6.2-mile) wide area. A small portion of the Little Iskut Formation is exposed in the Mess Creek Escarpment to the west. The Little Iskut Formation consists of trachybasalt flows and breccia . It ranges in thickness from 90 m (300 ft) on Stewpot Ridge to about 300 m (980 ft) near the middle of Artifact Ridge. The Little Iskut Formation originally formed

135-475: The province of British Columbia , Canada . It flows generally east for roughly 17 km (11 mi) to join the Little Iskut River, a tributary of the Iskut River , which in turn is the largest tributary of the Stikine River. Gerlib Creek joins Bourgeaux Creek about 5 km (3.1 mi) upstream of Bourgeaux's confluence with the Little Iskut River. Bourgeaux Creek's mean annual discharge

150-505: The Little Iskut River is located about 73 km (45 mi) southeast of Telegraph Creek, British Columbia , about 110 km (68 mi) south of Dease Lake , and about 165 km (103 mi) northeast of Wrangell, Alaska . The Little Iskut River is in the asserted traditional territory of the Tahltan First Nation and Iskut First Nation , of the Tahltan people. The Little Iskut River originates at Little Ball Lake just south of Kounugu Mountain . It flows northeast through

165-413: The Little Iskut River. Here, the flows formed a lava dam behind which water ponded to form Raspberry Lake. Water discharging from this prehistoric lake eventually cut through the eastern edge of this dam to create a new course for the Little Iskut River. Bourgeaux Creek Bourgeaux Creek is a tributary of the Little Iskut River and part of the Stikine River watershed in northwest part of

SECTION 10

#1732798608909

180-519: The Little Iskut turns sharply to flow southeast. It empties into the Iskut River just downstream of Cascade Falls . The Little Iskut River is a major tributary of the Iskut River. About 5% of its watershed is glacier-covered. Much of the lower Little Iskut River is braided. During the Miocene epoch, a series of lava flows from the adjacent Mount Edziza volcanic complex travelled east into

195-506: The Spectrum Range, Artifact Ridge, and high peaks including Tadeda Peak and Armadillo Peak . Between Stewbomb Creek and Bourgeaux Creek the historic Yukon Telegraph Trail crosses the Little Iskut River, following Bourgeaux Creek over Raspberry Pass to Mess Creek, continuing north along the western side of the Mount Edziza volcanic complex to Telegraph Creek on the Stikine River . After Bourgeaux Creek, near Mowdade Lake,

210-417: The southern part of Mount Edziza Provincial Park, then north, forming the southeastern boundary of the park. It collects tributary streams flowing east from the Spectrum Range . Stewbomb Creek and its tributary Artifact Creek flow from Obsidian Ridge , Artifact Ridge , and high mountains including Yeda Peak and Kitsu Peak . Bourgeaux Creek and its tributary Gerlib Creek also flow east from

225-685: Was named for F. Bourgeaux, a member of the Western Union Telegraph Company party which, in 1866, explored the area for an overland telegraph route to Europe via Alaska, the Bering Strait and Asia. That telegraph was never built, but the nearly 3,000-kilometre-long (1,900-mile) Yukon Telegraph Line was constructed by the Dominion Government Telegraph Service between 1897 and 1901 to send messages from Ashcroft, British Columbia in

#908091