Saltmarsh development from fen: Analysis of late Holocene deposits from north-central Fenland, U.K.

摘要: Abstract Lithostratigraphic studies in north-central Fenland reveal the occurrence of a silty clay unit separating fen peat deposits from saltmarsh clayey silt deposits. Lithological and organic carbon data show gradual transitions underlying to overlying palaeoenvironments. Magnetic susceptibility indicate pedogenic alteration substantiated by percentage carbonate data. Palynological development Betula carr via an intermediate environment with pollen spores derived both seaward landward facies. Analysis interpretation suggest that was deposited brackish open water habitat as result freshwater tidal ponding behind saltmarsh. The evidence existence previously unrecorded successional between coastal reedswamp This occurred broad, shallow gradient settings during periods rapid growth. No modern comparable exists due effect drainage sea defence schemes. Comparison is made other sites within Fenland.