Taimyr Depression

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The Taimyr Depression ( Russian Таймырская впадина or Таймырская депрессия) is geomorphologically considered a large depression of the North Siberian lowlands , each in the north of the Krasnoyarsk region of Siberia and Russia ( Asia ).

The lowland landscape is located about 600 km north of the Arctic Circle in the Taimyr Autonomous District , which existed until 2007 and which corresponded to the northern part of the Krasnoyarsk Territory. As a barely inhabited area, it is located south of the Taimyr Peninsula and the Byrranga Mountains on it with the Taimyr Lake off the coast to the south ; in the context of at least its lake basin, the landscape also has a cryptodepression . Its western boundary is the the Kara Sea via conductive Yenisei bay, the south and southwest bordering Central Siberian mountains with the putorana plateau and the Anabarplateau and in the east it goes beyond the khatanga gulf of the Laptev Sea above. The lowland landscape thus forms part of the watershed between the Kara Sea in the west and Laptev Sea in the east, both of which are part of the Arctic Ocean .

The Taimyr Depression, which is particularly traversed by the Pjassina and Chatanga and their tributaries Cheta and Kotui as well as the Upper Taimyra , is characterized by extensive swamps with many lakes and the vegetation of the tundra , the landscape of which was formed by glaciers in the Ice Age . In the northern part of the lowland, through which the Taimyra flows through the large Taimyr Sea, the small mountains Kirjaka-Tas ( ⊙ ; max.  608  m ) and Tulai-Kirjaka ( ⊙ ; max.  632  m ) rise up out of the lowlands like islands . These are by the flow Cholidjetari and Kungasalachsee  ( ⊙ ), with the somewhat SSW thereof located Portnjaginosee  ( ⊙ separated) from each other. Far southwest of the Taimyrsee, in the direction of the Putorana Mountains, lies the Labassee .

The Taimyr Depression consists of a thick layer of Mesozoic Quaternary sediments. Especially in the western part of the lowland the layer is 100 to 200 m thick. There are glacial formations at the base of the Quaternary layers .

Individual evidence

  1. ↑ a b topographic map (1: 1,000,000, p. S-47,48, edition 1986), Taimyrsenken-Ostteil u. a. with Byrranga Mountains (north), Taimyrsee (south of it) with Taimyra (flowing through Taimyrsee), Kirjaka-Tas-Mountains , Tulai-Kirjaka-Mountains , Kungasalachsee and Portnjaginosee (each about southeast of it), Chatanga (diagonally below right) with Chatangagolf (right) and Labassee (bottom left) on maps47.narod.ru (with heights above sea level )

Coordinates: 71 ° 51 ′ 22 "  N , 96 ° 40 ′ 47"  E