Journal
HOLOCENE
Volume 10, Issue 3, Pages 367-376Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1191/095968300670746884
Keywords
sea-level change; salt-marsh foraminifera; transfer function; (210)Pb; Holocene; Maine
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Quantitative analyses of foraminiferal distributions along the coast of Maine are used to provide transfer functions for reconstruction of sea-level changes from fossil foraminiferal assemblages. The indicative meaning of fossil assemblages is most accurately predicted by a training set that incorporates live and dead foraminifera and that uses flooding duration, not height, as the predictor variable. Sea-level records are produced for two sites in Maine (USA): a middle marsh site in Scarboro and a high marsh site in Machiasport. These records offer temporal resolution of five to seven years and span the past century. They are compared with instrumental data from a nearby tidal station to assess their accuracy. Strong correlations are found between the geologic records and the observational data, in particular between the foraminiferal record from Machiasport and the tide-gauge record from Eastport (r(2) = 0.83, p = 0.005). Thus a foraminifera-based transfer-function approach offers great potential for resolving decadal-scale sea-level changes from the geologic record.
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