A. Gomes, T. Boski, Delminda Moura, Katie Szkornik, Simon Connor
In order to enhance our understanding of the evolution of the Guadiana Estuary since the Last Glacial Maximum, a diatom-based study was performed on a core collected in a salt-marsh zone of the Guadiana River. The core spans more than 13241 cal. Years B.P. Between ca. 62-m and 25.5-m depth the diatom assemblages are indicative of a prevailing salt-marsh environment. The strongest marine influence was inferred to the period between ca. 25.5 and 13.5-m depth, indicating a phase of rapid sea-level rise. From this period onwards, diatom assemblages seem to indicate an evolution to a more restrict environment probably similar to the actual configuration of the study area.
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