Wanzhou District is located at the east edge of Sichuan Basin and northeast edge of Chongqing
Municipality, from 107..55..22"E to 108..53..25"E and from 30..24..25"N to 31..14..58"N. It
borders Yuyang in the east, Shizhu and Lichuan Hubei in the south, Zhongxian County and Liangping in
the west, and Kaijiang and Kaixian County in the north. It covers a length of 97.25 km from east to west
and a length of 67.25 km from south to north as well as an area of 3,457 km2. Hills and mountains are
main landforms in the area, with the highest point (1,762m above sea level) at Shaping Peak of Puzi
Township and the lowest point (106m above sea level) at Huangbai Township on the banks of The
Yangtse River. Low mountains and hills as well as mid-low mountains and flat land account for 1/4 of the
area respectively. A very few flat dams and platform scatters there and there. A lot of rivers and streams
spread all over the area in a tree-like form, featured by large depth, great fall, different height, and all of
which belong to The Yangtse River system. In the area, outcropping strata consists of a large area of
Jurassic stratum, followed by Triassic stratum. The tectonic line belongs to Wuling mountain fold zone on
No. 3 huge uplifted zone of Neocathaysian system. The west edge of Wuling mountain fold zone borders
Daba mountain arc fold zone, extends along east-north direction out of the area, and disappears at westnorth
side of Qiyao mountain anticline. Thus, the Wanxian arc tectonic line stretching toward the
northwest is formed