一、地形在“康滇古陆”的范围内和金沙江上游的峡谷区里,由于挽近地壳上升和河谷的急速下切形成了东川铜矿区巍峨而陡峻的地形。矿区之东有小江峡谷,其北为金沙江的峡谷,其西为普渡河峡谷,其南为隆起达海拔约5,000公尺的轿子山。由 I. Topography Within the range of “Kang-Dian ancient land” and in the gorge area in the upper reaches of the Jinsha River, the steep and steep terrain of the Dongchuan copper mining area has been formed due to the recent crustal ascent and the rapid undercutting of the valley. There is a small river canyon east of the mining area, the north of the Jinsha River Canyon, the West for the Purdue River Canyon, the south of the uplift of about 5,000 meters above sea level sedan chair. by