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Holocene palaeotsunami imprints in the stratigraphical record and the coastal geomorphology of the Gialova Lagoon near Pylos (southwestern Peloponnese, Greece)

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doi: 10.1127/zfg\suppl/2014/S-00190
Authors:Willershäuser, Timo; Vött, Andreas; Hadler, Hanna; Ntageretzis, Konstantin; Emde, Kurt; Brückner, Helmut
Corporate Authors:Project Quaternary Tsunami Events in the Eastern Ionian Sea; Reconstructing and Modelling Extreme Events Based on Interdisciplinary Geoscientific Investigations
Volume Title:Holocene palaeotsunami landfalls and neotectonic dynamics in the western and southern Peloponnese (Greece); the past as a key to the present and predictor of the future
Volume Authors:Vött, Andreas, editor; Kelletat, Dieter
Source:Holocene palaeotsunami landfalls and neotectonic dynamics in the western and southern Peloponnese (Greece); the past as a key to the present and predictor of the future, edited by Andreas Vött and Dieter Kelletat; Project Quaternary Tsunami Events in the Eastern Ionian Sea; Reconstructing and Modelling Extreme Events Based on Interdisciplinary Geoscientific Investigations. Zeitschrift für Geomorphologie, Vol.59(Suppl. 4), p.215-252. Publisher: E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany. ISSN: 0372-8854
Publication Date:2015
Note:In English. 133 refs.
Summary:The coastal area around the Gialova Lagoon (southwestern Peloponnese, Greece) is directly exposed to the highly tectonically active Hellenic Trench. As known from historical sources, the coastline was repeatedly affected by tsunamigenic impacts. Detailed geo-scientific studies were carried out in the environs of the Gialova Lagoon in search of high-energy event deposits. Geomorphological, sedimentological and geochemical methods were applied in order to identify Holocene tsunami events and reconstruct the palaeogeographical evolution of the area based on 8 terrestrial vibracorings. Microfossil studies were applied along a transect of three vibracores to decipher detailed changes in the palaeoen-vironmental setting. Our results show that the palaeogeographical evolution of the Gialova Lagoon was strongly affected by high-energy impacts. Coarse-grained allochthonous sediments of marine origin were found intersecting low-energy lagoonal and limnic muds. Based on sedimentary characteristics, the local (palaeo-) geomorphological setting and the geomorphodynamic potential of modern-day storms, we conclude that the identified high-energy events were associated with tsunami impacts. Radiocarbon datings allowed age estimations of six tsunami generations that took place between the 4th millennium BC and medieval times. Geomorphological characteristics of the study area such as the Voidokilia washover fans and beachrock structures along the coastline also provide evidence of repeated tsunamigenic landfalls.
Subjects:Beachrock; Biostratigraphy; Calcium carbonate; Carbonate rocks; Cenozoic; Chemical analysis; Cores; Electrical conductivity; Foraminifera; Holocene; Microfossils; Microscope methods; PH; Quaternary; Reconstruction; Sedimentary rocks; Shore features; Tectonics; Tsunamis; Europe; Greece; Peloponnesus Greece; Southern Europe; Greek Ionian Islands; Organic materials
Record ID:785843-9
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe, Hanover, Germany
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