Document of bibliographic reference 296604

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Infilling of the Canche Estuary (eastern English Channel, France): Insight from benthic foraminifera and historical pictures

Abstract

A multiproxy approach based on benthic foraminifera, sediment grain-size, total organic carbon content, major and trace element concentrations, and radionuclide activities was used to investigate the recent landscape evolution of the Canche Estuary (eastern English Channel, France). In the present study the radiometric dating based on ²¹⁰Pb and ¹³⁷Cs activities could only establish that the sediments were deposited recently. As an alternative method, aerial historical pictures were used for the first time to date core sediments as well as to enhance the palaeoenvironmental interpretations. In approximately one hundred years, an initial naked tidal flat has been gradually replaced by a vegetated salt marsh. In the bottom part of the core, foraminiferal assemblages are dominated by Cribroelphium excavatum and Elphidium margaritaceum. Haynesina germanica is the most abundant taxon in the middle part of the core while Entzia macrescens is dominant in the upper part. The sediment core represents a typical fining-upward succession in a low-impacted tide-dominated estuary filled by progradation. Our outcomes highlight how a multidisciplinary approach based on abiotic and biotic parameters is essential for understanding complex transitional areas like estuaries. When dating is not provided by classic radiometric methods, historical pictures (<100 years) may constitute a valuable alternative method to reconstruct recent environments.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000440526900001

Bibliographic citation

Francescangeli, F.; Portela, M.; Armynot du Châtelet, E.; Billon, G.; Andersen, T.J.; Bouchet, V.M.P.; Trentesaux, A. (2018). Infilling of the Canche Estuary (eastern English Channel, France): Insight from benthic foraminifera and historical pictures. Mar. Micropaleontol. 142: 1-12. https://dx.doi.org/10.1016/j.marmicro.2018.05.003

Is peer reviewed

true