[4] The range is composed of granite and gabbro intrusions, breaking through Devonian, Permian, Triassic and Jurassic sediments.

[4] The Ush-Urekchen was first mapped in the summer of 1870 by topographer P. Afonasiev who was part of the 1868 - 1870 East Siberia expedition of Baron Gerhard von Maydell (1835–1894) and astronomer Karl Karlovich Neyman (1830s–1887).

[6][7] The Ush-Urekchen rises in the northernmost sector of the Kolyma Highlands System.

The Oloy river, a right tributary of the Omolon, limits the range to the north.

The highest summit is a 1,685 metres (5,528 ft) high unnamed peak located in the central part of the range.