Angara Ridge

Angara Ridge

 

a ridge chiefly in Irkutsk Oblast of the RSFSR. It lies in the southeastern part of the Middle Siberian Uplands, stretching from the foothills of the Eastern Saian Mountains about 800 km southeast to the basin of the Lower Tunguska River, with elevations of up to 1,022 m. The ridge consists of several parallel ridges with leveled interfluves and is composed of Lower Paleozoic carbonate and terrigenous deposits as well as sheet intrusions of traps. In crossing the traps, the Angara River and its tributaries form large rapids. In the northeast is larch taiga and in the southwest, pine forests with large areas of silver fir and cedar taiga. Iron ore deposits are also present.