Olyokma-Stanovik

The Olyokma-Stanovik (Олёкминский Становик; Olyokminsky Stanovik) is a system of mountain ranges in Zabaykalsky Krai, Russia. The western end of the range reaches into Amur Oblast.

Geography
The Olyokma-Stanovik is part of the South Siberian System. It consists in a number of ranges of moderate height rising in the area of the sources of the Olyokma River and stretches roughly northeastwards for over 450 km. The width of the group of ranges reaches a maximum of 250 km in its central part. Some of the ranges are separated by intermontane basins, such as the Upper Olyokma Depression, the Tungir Depression and the Nenyugin Depression.

The average summits of the Olyokma-Stanovik reach between 1200 m and 1600 m. The highest point is a 1908 m high Golets Kropotkin. The range rises in an area prone to earthquakes.

Subranges
The ranges of the highlands include the following:


 * Muroy Range, highest point 1908 m high Golets Kropotkin
 * Olyokma-Stanovik Range, highest point 1845 m (unnamed)
 * Khorkovy Range, highest point 1584 m high Urguchanskiy Golets
 * Tungir Range, highest point 1807 m high Mount Guran
 * Cheromny Range, highest point 1431 m (unnamed)
 * Western Lyundor Range, highest point 1463 m (unnamed)
 * Urusha Range, highest point 1600 m (unnamed); it includes the Nyukzha Ridge, a spur of the range where the sources of the Nyukzha river are located.
 * Kiteme-Yunikal (хребет Китэмэ-Юникал), located in Tyndinsky District, Amur Oblast

Hydrography
The Olyokma-Stanovik forms the main watershed between the rivers of the Lena basin (flowing into the Arctic Ocean) and the ones of the Amur basin (flowing into the Pacific Ocean). The Olyokma, a right tributary of the Lena, and its tributaries Srednyaya Mokla, Tungir and Nyukzha have their sources in the highlands. Other important rivers originating in the highlands are the Nercha, Kuenga and Cherna, left tributaries of the Shilka, as well as the left tributaries of the Amur: Amazar, Urka and Urusha, among others.

Flora
The slopes of the range are covered with larch taiga and pre-Alpine woodland up to 1200 m, with dwarf birch in the bottoms of the river valleys. At elevations above 1500 m there is mountain tundra. Many peaks are crowned by ‘’golets’’ type bare summits.