() is located in northwest central Gansu province. In the north it borders Inner Mongolia
, in the southwest, Qinghai
. Its central location between three western capitals, Lanzhou
, and Yinchuan
makes it an important business and transportation hub for the area. Because of its position along the Hexi Corridor
, historically the only route from central China to western China and the rest of Central Asia
, many major railroads and national highways pass through Wuwei.
Geography, geology and climate
Wuwei's geography is dominated by three plateaus, the Loess
, and Mongolian
. Elevation can be generalized as, the south is high and the north is low, with elevations ranging from above sea-level. Its area is . Average annual temperature is . The climate is arid or semi-arid with rainfall between . Evaporation is from , creating a net loss of water each year
. There are 2200–3000 sunlight hours each year and from 85–165 frost free days. Temperatures during summer in excess of in the shade are by no means unheard of.
Southwest of Wuwei, there is a thick Tianzhu
Formation made of clastics
intercalated with sandy shale
and shale.Chih-i Chou, William Thornton Dean, Phanerozoic Geology of Northwest China
, 1996,316 pages ISBN 9067642282 Minerals deposits occurring in the vicinity of Wuwei include graphite
, and limestone
In ancient times, Wuwei was called Liangzhou (凉州) and is the eastern terminus of the......