Holocene Submerged Shorelines on Theologos Area (Greece)
| Autor: | A. Vassilopoulos, Alberto Tomasin, Niki Evelpidou, Paolo Antonio Pirazzoli |
|---|---|
| Přispěvatelé: | Laboratoire de géographie physique : Environnements Quaternaires et Actuels (LGP), Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Department of Applied Mathematics, University of Ca’ Foscari [Venice, Italy] |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Tsunami wave
010504 meteorology & atmospheric sciences Geography Planning and Development notches 010502 geochemistry & geophysics 01 natural sciences [SHS]Humanities and Social Sciences Wind wave Earth and Planetary Sciences (miscellaneous) submergence rate 14. Life underwater Lithophaga Geomorphology Holocene Sea level 0105 earth and related environmental sciences Shore geography geography.geographical_feature_category biology biology.organism_classification Section (archaeology) earthquake [SDE]Environmental Sciences Period (geology) Sea-level changes tsunami sea-level changes Geology |
| Zdroj: | Annales de Géomorphologie / Annals of Geomorphology / Zeitschrift für Geomorphologie Annales de Géomorphologie / Annals of Geomorphology / Zeitschrift für Geomorphologie, Schweizerbart und Borntraeger, 2011, 55 (1), pp.31--44. ⟨10.1127/0372-8854/2011/0055-0032⟩ Zeitschrift für Geomorphologie 55 (2011): 31–44. doi:10.1127/0372-8854/2011/0055-0032 info:cnr-pdr/source/autori:Evelpidou N/titolo:Holocene submerged shorelines on Theologos area (Greece)/doi:10.1127%2F0372-8854%2F2011%2F0055-0032/rivista:Zeitschrift für Geomorphologie/anno:2011/pagina_da:31/pagina_a:44/intervallo_pagine:31–44/volume:55 |
| ISSN: | 0372-8854 |
| DOI: | 10.1127/0372-8854/2011/0055-0032⟩ |
| Popis: | Summary. Detailed mapping of coastline around Theologos area revealed the existence ofwell developed permanently submerged notches 75 10 cm below present mean sea level. Theregional occurrence of well preserved submerged tidal notches suggests their coseismic origin.The submergence of this Holocene shoreline possibly occurred at 1894 AD. Average submer-gence rate of 6.08 mm/yr may be estimated by a well preserved recumbent U-shaped notch.The retreating point depth suggests that the developing period of the notch might have beenof the order of as much as three thousand years.Several non in situ large rock blocks, containing marine fossils ( Lithophaga , Vermetids , Serpulids ) in growth position, seem to have been projected on the coast by a tsunami wave,which might have been caused by the same coseismic episode. Key words: notches, Sea-level changes, earthquake, tsunami, submergence rate 1 Introduction Tidal notches that usually undercut limestone cliffs in the mid-littoral zone are wellknown as precise sea-level indicators ( Pirazzoli 1986, 1996, 2005). In areas shelteredfrom wave action, elevated or submerged notches can be used to indicate former sea-level positions, with up to a decimeter confidence. The shape of the notch profilesmay also provide qualitative information on the rate of sea-level change and on tec-tonic movements.The aim of this paper is to use notches as sea level indicators to identify formershoreline positions in the area of Theologos and to show that their presence anddevelopment is associated with vertical movements of possible coseismic origin.In Section 2 the genesis of notch shapes is discussed, while in Section 3a briefpresentation of the geological setting and some archaeological and seismologicalinformation of the study area is presented. The methodology used is summarized inSection 4, while the main results obtained are presented and discussed in Sections 5and 6.2 |
| Databáze: | OpenAIRE |
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