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Mackenzie

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Mackenzie

1
1. Sir Alexander. ?1755--1820, Scottish explorer and fur trader in Canada. He explored the Mackenzie River (1789) and was the first European to cross America north of Mexico (1793)
2. Alexander. 1822--92, Canadian statesman; first Liberal prime minister (1873--78)
3. Sir Compton. 1883--1972, English author. His works include Sinister Street (1913--14) and the comic novel Whisky Galore (1947)
4. Sir Thomas. 1854--1930, New Zealand statesman born in Scotland: prime minister of New Zealand (1912)
5. William Lyon. 1795--1861, Canadian journalist and politician, born in Scotland. He led an unsuccessful rebellion against the oligarchic Family Compact (1837)

Mackenzie

2
a river in NW Canada, in the Northwest Territories and Nunavut, flowing northwest from Great Slave Lake to the Beaufort Sea: the longest river in Canada; navigable in summer. Length: 1770 km (1100 miles)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Mackenzie

 

an open bay of the Beaufort Sea, located along the northern coasts of Canada, between Cape Kaye and the delta of the Mackenzie River. Length, about 70 km; depth, 5-10 m; depth at Cape Kaye, more than 20 m. Ice forms in September and begins to thaw in early June.


Mackenzie

 

a system of mountain ranges in northwestern Canada, part of the eastern belt of the Cordilleras. The mountains are bounded by the Peel River in the north and the South Nahanni in the south. Length, approximately 700 km; elevation, to 2,469 m (the Mackenzie Mountains proper reach an altitude of 2,164 m). The ranges are composed primarily of sedimentary rocks, and there are traces of ancient glaciation. Many tributaries of the Mackenzie River rise on the slopes. Vegetation is represented by taiga, consisting for the most part of spruce forests, open woodlands (to elevations of 1,200-1,500 m), and mountain tundra.


Mackenzie

 

a river in northwestern Canada. It issues from the Great Slave Lake and empties into the Arctic Ocean (Beaufort Sea), forming a delta with an area of about 12,000 sq km.

The Mackenzie River proper is about 1,600 km long; together with the Peace River (from the source of the Finlay River) the length is 4,250 km. The basin area, including the systems of the Slave, Peace, and Athabasca rivers, which all belong to the basin of Great Slave Lake, is 1,804,000 sq km. The Mackenzie’s principal tributaries are the Liard, Arctic Red, and Peel on the left and the Great Bear River on the right. The valley of the Mackenzie is filled with strata of alluvial and aqueoglacial deposits, is very swampy, and is covered with spruce forest. The river is fed by snow and rain; its high-water period occurs during the spring and summer. The average discharge is 14,000 cu m per sec. The river freezes over in September or October, and the ice breaks up in May; in its lower course the ice breaks up in early June. The length of the navigable waterways of the entire Mackenzie River system, from Waterways on the Athabasca River to the port of Tuktoyaktuk on the Arctic Ocean, totals 2,200 km. The largest population centers are Aklavik, Inuvik, Norman Wells (a center of the petroleum industry), Fort Norman, and Fort Providence. The river was discovered and first traveled by A. Mackenzie in 1789.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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