geo.wikisort.org - Mountains

The Torngat Mountains are a mountain range on the Labrador Peninsula at the northern tip of Newfoundland and Labrador and eastern Quebec. They are part of the Arctic Cordillera.[1] The mountains form a peninsula that separates Ungava Bay from the Atlantic Ocean.

Torngat Mountains
Folded rocks of the Torngat Mountains
Highest point
Peak	Mount Caubvick (Mont D'Iberville)
Elevation	1,652 m (5,420 ft)
Coordinates	58°53′01″N 63°42′57″W
Dimensions
Area	30,067 km2 (11,609 sq mi)
Geography
Country	Canada
Provinces	Labrador and Quebec
Range coordinates	59°25′N 64°30′W
Parent range	Arctic Cordillera

Etymology

The name Torngat is derived from an Inuktitut word meaning place of spirits, sometimes interpreted as place of evil spirits.[2]

Geography

The Torngat Mountains have a substantial geographical extent. About 56% of the range is located in Quebec, 44% is in Labrador, and the remainder, less than 1%, is located on Killiniq Island in Nunavut. At least 2% of the mountain chain is under water, and poorly surveyed. The Torngat Mountains cover 30,067 square kilometres (11,609 sq mi), including lowland areas and extend over 300 km (186 mi) from Cape Chidley in the north to Hebron Fjord in the south. The Torngat Mountains have the highest peaks of eastern continental Canada.

The highest point is Mount Caubvick (also known as Mont D'Iberville) at 1,652 m (5,420 ft). There are no trees in the Torngat Mountains because the mountains lie in an arctic tundra climate and are therefore above the tree line.

Permafrost is continuous on the Quebec side of the border, and it is extensive but discontinuous on the eastern Atlantic side. The terrain is over 300 m (984 ft) above sea level and is predominantly rocky desert.

Highest Peaks of the Torngat Mountains

Rank	Name	m	ft
1	Mount Caubvick	1652	5420
2	Torngarsoak Mountain	1595	5232
3	Cirque Mountain	1568	5144
4	Peak 5100 (24I/16)	1554+	5100+
5	Peak 5074	1547	5074
6	Mount Erhart	1539	5049
7	Jens Haven	1531	5023
8	Peak 5000 (24P/01)	1524+	5000+
9	Peak 5000 (24I/16)	1524+	5000+
10	Innuit Mountain	1509	4951

Geology

Precambrian gneisses that comprise the Torngat Mountains are among the oldest on Earth and have been dated at roughly 3.6 to 3.9 billion years old.[2] Geologists recognize the gneisses of the Torngats as a part of the Canadian Shield or Laurentian Upland,[3] which, composing the very old North American Craton, split from the continent of Rodinia roughly 750 million years ago to form the geologic core of North America.[4]

However, the mountain-building or orogeny of the Torngats took place much more recently, and is characteristic of the folding and faulting that defines the series of geological events known as Arctic Cordillera.[5] This, according to some, makes the Torngats, as mountains, "distinct compared to the surrounding Precambrian Canadian Shield,"[6] though they are ultimately composed of shield rock. Evidence of this dramatic cordilleran folding and faulting characterizing the Torngat Mountains can be seen distinctly in rocks where the North American Craton long ago collided with the Nain Craton, later exposed in cross-section by glacial scouring, especially at Saglek Fjord.[7]

Glaciation

The ranges of the Torngat Mountains are separated by deep fjords and finger lakes surrounded by sheer rock walls. The fjords were produced by glaciation. The Laurentide Ice Sheet covered most of the mountains at least once, however during the last ice age the coverage was more limited.

Currently, there are over 100 active small mountain glaciers in the Torngat Mountains with a total of about 195 ice masses in the region.[8][9]

Ecology

Torngat Mountain tundra
Torngat Mountains and Nachvak Fjord
Location of the Torngat Mountain tundra ecoregion in North America
Ecology
Realm	Nearctic
Biome	Tundra
Borders	Eastern Canadian Shield taiga and Middle Arctic tundra
Geography
Area	32,375 km2 (12,500 sq mi)
Country	Canada
Provinces	Newfoundland and Labrador and Quebec
Conservation
Conservation status	Relatively Stable/Intact[10]

Flora

The Torngat Mountain tundra is characterized by sparse cover of arctic sedges, grass, lichen, and moss. Patches of mixed arctic evergreen and deciduous shrubs can be found on sheltered south-facing slopes, increasing in prevalence as one moves south.[10]

Fauna

The tundra provides seasonal habitat for caribou, polar bears, and the only tundra-dwelling black bears in the world. In addition, the coastal area of this ecoregion lies along the Atlantic migratory flyway.[10]

Conservation

The Torngat Mountains National Park Reserve was announced on 1 December 2005. It aims to protect wildlife (caribou, polar bears, peregrine falcon and golden eagle among others), while offering wilderness-oriented recreational activities.[11]

In popular culture

In the CBC Series Geological Journey the Torngat mountains are featured. Notably, a billion-year-old coal seam (based on algae, not peat swamps) was discovered in the Torngat mountains on the Newfoundland Coast as part of the filming of the series.

Backcountry Magazine ran a feature story written by Drew Pogge in 2009 on steep skiing in the Torngat Mountains, notably first descents in Nachvak and Saglek fjords, as well as on the Caubvick massif.

See also

• List of ecoregions in Canada (WWF)
• Torngat Mountains National Park
• Kuururjuaq National Park

References

Further reading

External links

• Torngat Mountains
• Great photos of the mountain range
• Statistics Canada Principal heights by range or region
• Tales from the Torngats, August 2004
• Alexander Forbes Collection: Aerial photo survey of Labrador from 1931, 1932, and 1935 expeditions - University of Wisconsin-Milwaukee Libraries Digital Collections
• Torngat Mountains: Canada's newest national park

На других языках

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[de] Torngatberge

Die Torngatberge (englisch Torngat Mountains, französisch Monts Torngat) bilden den südlichsten Gebirgszug der Arktischen Kordillere an der Nordostküste der Labrador-Halbinsel in Kanada.

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- [en] Torngat Mountains

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[es] Montes Torngat

Este artículo es sobre una cordillera canadiense. Para la banda indie de Montreal, véase Torngat

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[fr] Monts Torngat

Les monts Torngat sont une chaîne de montagnes faisant partie de la cordillère Arctique dans le Bouclier canadien et situés sur la péninsule du Labrador, à la frontière du Québec et de la province de Terre-Neuve-et-Labrador.

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[ru] Торнгат

Го́ры Торнга́т (фр. Monts Torngat) — горная цепь Канадского щита (в Квебеке также называемого Лаврентийским плато), расположенная на полуострове Лабрадор на границе Квебека и провинции Ньюфаундленд и Лабрадор.

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