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Sedimentation of metals preserves the historicalrecord of contaminant input from local andregional sources,and can provide information on historical changes in regional water andsediment quality.High mean sedimentation rates of 0.85 and 1.5 cm/yr were calculatedfor the cores LH3 and LH4,respectively,and with the aid of with 210Pb dating.The concentrations of heavy metals such as Cd,Cr,Cu,Mn,Pb and Znwere determined for dated core sediments to evaluate the historical trend of anthropogenic heavy metal pollution in the tidal flat of HaizhouBay.The pollution of anthropogenic heavy metals beganaround the establishment of the People’s Republic of China in the 1960s,and increased until the 1990s,before decreasing from 2000 until the present.The concentrations of these pollutantsexhibit high correlation among one another in the sediments.It is shown that heavy metal pollution inHaizhou Bay originated from industrial activity in the urban district of thecoastal area.