黄河兰州段河谷演化研究与认识

贺鑫, 胡小飞, 潘保田

Research and Understanding of the Evolution of the Yellow River Valley in Lanzhou

Xin He, Xiaofei Hu, Baotian Pan

图3 兰州盆地各级地貌面年代(据参考文献[42]修改)

Fig.3 Age of geomorphic surface at all levels in Lanzhou Basin（modified after reference[42]）