Anabar Plateau

Anabar Plateau
Anabar Plateau
Анабарское плато
	Kotuykan River, Anabar Plateau
Highest point
Peak	unnamed
Elevation	905 m (2,969 ft)
Dimensions
Length	550 km (340 mi)
Width	370 km (230 mi)
Geography
	Anabar Plateau Location in Krasnoyarsk Krai, Russia
Country	Federal subject
Range coordinates	70°30′N 108°0′E / 70.500°N 108.000°E
Parent range	Central Siberian Plateau
Geology
Age of rock	Archean, Proterozoic and Lower Paleozoic
Type of rock	Gneiss, schist and Limestone

The Anabar Plateau (Russian: Анабарское плато) is a mountain plateau in Krasnoyarsk Krai and the Sakha Republic (Yakutia), Siberia, Russia.

The plateau is in a latitude dominated by permafrost. The permafrost thickness under the Anabar Plateau reaches 1,400 metres (4,600 ft).^[1]

Geography

The Anabar Plateau is located north of the

Putorana Mountains, the border between both not being well-defined.^[1] The average height of the plateau surface is around 500 meters (1,600 ft). There are slightly higher tableland type elevations running across the plateau area, mostly in a roughly east to west direction. The highest point is a 905 metres (2,969 ft) high unnamed summit.^[3]

The Big Kuonamka, which forms the upper course of the

Lena. The Popigai impact structure is located to the NNE of the plateau.^[2]

Geology

The Anabar Plateau of the Central Siberian Plateau is one of the oldest structures on Earth, with rocks that are more than 3 billion years old. In its central region it is composed of Archean crystalline schists and gneisses.^[5] Along the periphery of the plateau Proterozoic and Lower Paleozoic limestones predominate.^[1]

Anabar Shield

The Anabar Plateau coincides geographically with the

Siberian Craton. Together with the Aldan Shield further to the southeast, the Anabar Shield is one of the main features of the craton.^[6]

Flora and climate

There are sparse forests of

mountain tundra with mosses and lichens in the higher altitudes.^[3]

The climate prevailing in the Anabar Plateau is subarctic continental, characterized by a very low average rainfall of less than 250 millimetres (9.8 in) per year. Precipitation falls in the summer, mostly in the form of rain. The average air temperature in January is a chilly −34 °C (−29 °F) with an absolute minimum of −60 °C (−76 °F). The temperature may reach a maximum of 38 °C (100 °F) in July. The average annual temperature is −14 °C (7 °F).^[7]

References

^ ^a ^b ^c Geological structure and relief of Taimyr
^ ^a ^b Google Earth
^ ^a ^b Анабарское плато Great Soviet Encyclopedia
^ Аnаbаr - Kotuykan River
^ Anabar Plateau, Q & A
^ The Archean Litosphere as seen in the Anabar Shield
^ Brioflora of the Anabar Plateau and Adjacent Areas Archived 2015-12-23 at the Wayback Machine (in Russian)

External links

Media related to Anabar Plateau at Wikimedia Commons
Anabar Information and history
Fishing helicopter flight from Khatanga to Kotuykan river

[Byrr-1] Geological structure and relief of Taimyr

[GЕ-2] Google Earth

[GSE-3] Анабарское плато Great Soviet Encyclopedia

[4] Аnаbаr - Kotuykan River

[5] Anabar Plateau, Q & A

[6] The Archean Litosphere as seen in the Anabar Shield

[7] Brioflora of the Anabar Plateau and Adjacent Areas Archived 2015-12-23 at the Wayback Machine (in Russian)

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[3]

[2]

[5]

[6]

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