The early Pleistocene paleo-gravel deposits are widely distributed in the middle and lower reaches of the Yangtze River,such as Ya'an gravel layer and Baishajing gravel layer in the tributaries of the Yangtze River,and Yichang gravel layer,Yangluo gravel layer,Jiujiang gravel layer,Anqing gravel layer and Yuhuatai gravel layer along the main stream.They are all from early Pleistocene but not Miocene or Pliocene epoch.In addition,the Miocene or Pleistocene pebby-bearing sand-mudstones from the Dongxuanguan Formation,the Liuhe Formation and the Huanggang Formation with basalt interlayers,are widely developed in Nanjing and Liuhe area.The division and correlation of the gravel layers of the Yangtze River and the Miocene or Pleiocene pebbly sand-mudstone in Nanjing area is an important basis for the study of the mechanism of the transfixing of the Yangtze River and its time limit.
关键词
长江砾石层/雨花台砾石层/中新世/更新世
Key words
Yangtze River gravel layer/Yuhuatai gravel layer/Miocene/Pleistocene
维普
万方数据