The Contamination History of the Mersey derived from Sediment Cores

(cores collected from Widnes Warth Marsh in the Mersey Estuary)

Fig1  Lead in replicate cores from WidnesWarth Marsh
(after applying Emprical corrections to Core 2 to match the patterns of contamination)

Fig 2  Mercury in Replicate Cores from Widnes Warth Marsh
( with empirically corrected dates to Core 2 based on the pattern of Pb in CoreW1)

Fig 3  Arsenic in replicate cores from Widnes Warth Marsh 
(with empirically corrected dates to Core 2 based on the pattern of Pb in Core W1)

Fig 4  Chromium in Replicate Cores, Widnes, 
(with empirically corrected dates to Core 2 based on the pattern of Pb in Core W1)