The Oloy ( Russian : Олой ) is a river in Magadan Oblast in Russia , a right tributary of the Omolon ( Kolyma 's basin). The length of the river is 471 kilometres (293 mi). The area of its drainage basin is 23,100 square kilometres (8,900 sq mi). The river flows through sparsely populated areas of Chukotka .
6-758: It has its sources in the Ush-Urekchen range, at the confluence of Left Oloy and Right Oloy. It flows roughly northwestwards between the Ush-Urekchen to the south and the Oloy Range to the north. This Magadan Oblast location article is a stub . You can help Misplaced Pages by expanding it . This article related to a river in the Russian Far East is a stub . You can help Misplaced Pages by expanding it . Ush-Urekchen The Ush-Urekchen (Russian: уш-урекчен ), or Ushurakchan (Russian: Ушуракчан ),
12-475: Is a mountain range in the Chukotka Autonomous Okrug and Kamchatka Krai , Far Eastern Federal District , Russia. The range is composed of granite and gabbro intrusions, breaking through Devonian, Permian, Triassic and Jurassic sediments. There is extensive effusive rock cover in certain places. The Ush-Urekchen was first mapped in the summer of 1870 by topographer P. Afonasiev who was part of
18-448: The 1868 - 1870 East Siberia expedition of Baron Gerhard von Maydell (1835–1894) and astronomer Karl Karlovich Neyman (1830s–1887). About 60 years later, at the time of the USSR , the range was surveyed in more detail in 1928 by hydrographer Ivan Molodykh (1897 - 1939) and in 1932-33 during aerial surveys carried out by geologist Sergei Obruchev (1891 - 1965). The Ush-Urekchen rises in
24-516: The Omolon, limits the range to the north. The eastern end of the range is in Kamchatka Krai . The mountains of the range are slightly pointed, some of them being flat-topped, and have a generally smooth profile, with average elevations between 900 m (3,000 ft) and 1,600 m (5,200 ft). The highest summit is a 1,685 metres (5,528 ft) high unnamed peak located in the central part of
30-537: The northernmost sector of the Kolyma Highlands System. The range runs in a roughly northwest / southeast direction for over 230 kilometers (140 mi), between the Oloy Range to the north and the Molongdin Range to the south, roughly parallel to both. The Omolon River limits the range to the southwest and makes a bend northwards at the western limit of the range. The Oloy river, a right tributary of
36-590: The range. Many short rivers originate in the range, including tributaries of the Omolon such as the Karbaschan , of the Oloy , as well as rivers of the Penzhina basin in the southeastern area of range. There are sparse forests on some of the slopes and at the bottom of the valleys of the range up to elevations ranging from 500 m (1,600 ft) to 600 m (2,000 ft). The only vegetation cover at higher altitude
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