Yuhuatai
    gravel layer is an important component of Late Cenozoic strata in the middle
    and lower reaches of Yangtze River. As a significant record of information of
    neotectonics, changes of late Cenozoic geological environment, and evolution of
    the Yangtze River, the Yuhuatai gravel layer has been highlighted for a long
    time. Through comprehensive analysis and comparison of lithostratigraphy, geomorphology
    stratigraphy, biostratigraphy and chronostratigraphy, we can establish
    stratigraphic sequence of Yuhuatai gravel layer. The ⁴⁰Ar/³⁹Ar, K-Ar dating
    methods, and paleo-magnetostratigraphy of all basalt layers with interbeded
    gravel layers should be conducted in association with cosmogenic nuclide dating
    and ESR (Electron Spin Resonance) dating method in order to establish the
    chronostratigraphy of the study area.