MODERN TIDAL FLAT SEDIMENTATION IN JIANGGANG NORTHERN JIANGSU PROVINCE

The Jianggang tidal flat has developed its own characteristics , neither similar to North Sea tidal flat nor to Shanghai tidal flat. The Jianggang tidal flat is a non-barred open sea tidal flat with large tidal range. Elevation of the tidal flat controls the frequency, water depth and duration of the time of the rising tide, so it can also control the environment of the facies zone. Tidal channels are well developed on the Jianggang tidal flat. Sand layers coarser than the upper-layer and lower-layer are frequently intercalated in the tidal flat deposits. These interstratifled sand layers are produced by unusual storm tidal action.