Storm deposits in the coastal region of Shanghai, the Yangtze Delta, China

Abstract

In the nearshore area along the coast of Shanghai, from the marsh-lowland to the prodelta, a series of storm deposits is found that is relatively coarse-grained and interbedded with fine-grained fair-weather deposits. In a vertical section the proportion of storm deposits is up to 35%.The storm deposits are well preserved above normal wave base mainly due to abundant supply of sediment from the river. The storm-deposit series is characteristic of the mouth of a large river, such as the Yangtze River, having high sediment supply and accumulation rates.