Abstract: There is a wide distribution of thick loessal sediment around Qiaojia in the Jinshajiang River valley,especially near the Huatan area,Ningnan county,Sichuan province on the left bank.

• 摘 要： 金沙江巧家段河谷广泛发育厚层黄土状堆积，尤以金沙江左岸宁南县华弹一带最为发育。