Geochemical processes and sedimentological characteristics of Holocene lagoon deposits, Alikes Lagoon, Zakynthos Island, western Greece
作者： D. Panagiotaras , D. Papoulis , N. Kontopoulos , P. Avramidis
DOI: 10.1002/GJ.1339
关键词:
摘要: In this paper we present sedimentological, geochemical, mineralogical and 14C Accelerator Mass Spectrometry (AMS) dating data of a 21.0-m core obtained from Alikes Lagoon, Zakynthos Island. It is the first time that sedimentological geochemical are presented, up to 21-m depth, an Holocene coastal lagoon environment Ionia Sea, western Greece. The properties composition sediments were studied for period between 8540 years bp present. Samples analysed their particle size, calcium carbonate total organic carbon (TOC) content. Moreover, bulk sample chemical analyses major trace elements carried out, as well bulk, oriented clay fraction (<2 µm) determined by powder X-Ray diffraction. grain size characteristics, statistical parameters TOC, samples, suggest (restricted-shallow) with reduced salinity such tidal flat and/or particularly marsh in margin. Sediment characteristics element records may contain additional new palaeoclimate information provide important constraint on sediment depositional climate. Stratigraphic variation indices, Rb/Ti, Cs/Ti, Eu/Eu*, Th/Ti, La/Ti, Ta/Ti, Yb/Ti Y/Ti, ages 8540 7210 years bp, remain relatively constant indicating provenance Lagoon remained similar throughout mid Holocene. However, indices 7110 years present, indicate transition warm wet climate middle cold climatic conditions modern times. Copyright © 2012 John Wiley & Sons, Ltd.
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