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Stanovoi Range, Stanovoy Range
a system of mountain ranges in Eastern Siberia, stretching from the middle course of the Olekma River to the headwaters of the Uchur River in the Aldan River basin. It is roughly 700 km long and varies in width from 100 km to 180 km. The prevailing elevations are 1,500–2,000 m, and the highest peak rises to 2,412 m. The Stanovoi Range, the watershed between the Arctic and Pacific drainage basins, consists of parallel east-west ranges separated by longitudinal valleys. It is composed of Archean-Proterozoic schists and gneisses breached by granite intrusions. Minerals include gold, rare metals, and iron ores. Dome-shaped and flat-topped ranges and broad valleys are characteristic. Corries, cirques, and U-shaped valleys are found in places at the summits. Cryogenic relief forms are associated with the ubiquitous permafrost.
The region has a harsh continental climate. Summers are relatively warm; for about two months the mean daily temperature rises above 10°C. During the long and cold winters temperatures frequently drop to -30° or -40°C. The range receives some 500 mm of precipitation, of which up to 80 percent falls during the warm season. A number of tributaries of the Lena and Amur rivers originate in the Stanovoi Range. These rivers are fed chiefly by rain and are subject to summer and autumn flooding.
The slopes of the range are covered with mountain larch taiga, although forests of Yeddo spruce are also encountered. Above 1,200 m the taiga gives way to Siberian dwarf pine and then to alpine tundra. In the river valleys are found mari (sedge-sphagnum bogs with shrubs and sparse larch woods), meadows of reed grass and sedge, and peat bogs.
REFERENCESluzhnaia chast’ Dal’nego Vostoka. Moscow, 1969. (AN SSSR: Prirodnye usloviia i estestvennye resursy SSSR.)
Iakutiia. Moscow, 1965.
L. I. MUKHINA