Stratigraphy and paleoenvironmental changes in the Yangtze Delta during the Late Quaternary

The Yangtze Delta area may be subdivided into paleo-valley and paleointerfluves of the last glaciation

Congxian Li; Qingqiang Chen; Jiaqiang Zhang; Shouye Yang; Daidu Fan

2002

Scholarcy highlights

  • The Yangtze Delta area may be subdivided into paleo-valley and paleointerfluves of the last glaciation
  • The postglacial transgressive sedimentary cycle in back zones of the paleointerfluves consists of lacustrine-marsh deposits
  • The stiff clay, consisting of a paleosol, experienced deposition alternating with pedogenesis during the falling of sea-level during δ18O stage 3; ongoing pedogenesis in the sea-level lowstand of δ18O stage 2; and early diagenesis after paleointerfluve inundation by the sea-level rise of δ18O stage 1
  • The filling of the incised valley took place during the postglacial sea-level rise, and delta formation occurred at a late stage of PTSC development
  • The filling of the incised valley took place during the postglacial sea-level rise, and delta formation occurred at a late stage of postglacial transgressive sedimentary cycle development

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