6[5]Li J J, Xie SY, Kuang MS. Geomorphic evolution of the Yangtze Gorges and the time of their formation[ J]. Geomorphology, 2001,41: 125-135.
7Lee JS, Chao YT. Geology of the gorge district of the Yangtze ( from Ichang to Tzekuei ) with special reference to the development of the gorges[J]. Bull Geol Soc China. 1924, 3(3-4): 351-391.
8Teilhard de Chardin P, Young CC. The Cenozoic sequence in the Yangtze valley[J]. Bull Geol Soc China. 1935, 14 (2) : 161-178.
9Li JJ, Xie SY, Kuang MS. Geomorphie evolution of the Yangtze Gorges and the time of their formation[J]. Geomorphology, 2001,41(2-3): 125-135.