长江砾石层及其区域对比  

Yangtze River Gravel Layers and Its Regional Comparison

作　　者：陈立德 邵长生 CHEN Li-De;SHAO Chang-Sheng(Wuhan Center,China Geological Survey(Geosciences Innovation Center of Central South China),Wuhan 430205,Hubei,China)

机构地区：[1]中国地质调查局武汉地质调查中心(中南地质科技创新中心),湖北武汉430205

出　　处：《华南地质》2024年第3期528-537,共10页South China Geology

基　　金：中国地质调查局项目(1212011140035、1212010013500150005)。

摘　　要：长江中下游干支流广泛发育早更新世古砂砾石层堆积,如长江支流发育雅安砾石层、白沙井砾石层,干流沿线则发育宜昌砾石层、阳逻砾石层、九江砾石层、安庆砾石层和雨花台砾石层等“长江砾石层”,这些砾石层的时代均为早更新世而不是中新世或上新世。此外,南京及六合地区广泛发育中新世或上新世有玄武岩夹层的洞玄观组、六合组和黄冈组等含砾砂泥岩。长江砾石层及其与南京地区的中新世/上新世含砾砂泥岩的划分与对比,是长江贯通机制及其时限这一重大科学问题研究的重要基础。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 

分 类 号：P535[天文地球—古生物学与地层学]