Late Quaternary paleoseismic sedimentary archive from deep central Gulf of Corinth: time distribution of inferred earthquake-induced layers

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Published: Feb 21, 2014
DOI: https://doi.org/10.4401/ag-6226
Keywords:
Homogenite, Paleoseismicity, Anisotropy of Magnetic Susceptibility, Corinth

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Corina Campos
Universidad Simón Bolívar, Departamento de Ciencias de la Tierra, Sartenejas, Baruta,
Christian Beck
Grenoble-Alpes University, Laboratoire ISTerre, UMR CNRS 5275, CISM, Le Bourget du Lac,
Christian Crouzet
Grenoble-Alpes University, Laboratoire ISTerre, UMR CNRS 5275, CISM, Le Bourget du Lac,
Eduardo Carrillo
Universidad Central de Venezuela, Instituto de Ciencias de la Tierra, Caracas,
Aurélien Van Welden
Fugro Survey AS, Skøyen, Oslo,
Efthymios Tripsanas
Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), Anavyssos,

Abstract

A sedimentary archive corresponding to the last 17 cal kyr BP has been studied by means of a giant piston core retrieved on board R/V MARION-DUFRESNE in the North Central Gulf of Corinth. Based on previous methodological improvements, grain-size distribution and Magnetic Susceptibility Anisotropy (MSA) have been analysed in order to detect earthquake-induced deposits. We indentified 36 specific layers -Homogenites+Turbidites (HmTu) - intercalated within continuous hemipelagictype sediments (biogenic or bio-induced fraction and fine-grained siliciclastic fraction). The whole succession is divided into a non-marine lower half and a marine upper half. The “events” are distributed through the entire core and they are composed of two terms: a coarse-grained lower term and an upper homogeneous fine-grained term, sharply separated. Their average time recurrence interval could be estimated for the entire MD01-2477 core. The non-marine and the marine sections yielded close estimated values for event recurrence times of around 400 yrs to 500 yrs.

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How to Cite
Campos, C., Beck, C., Crouzet, C., Carrillo, E., Van Welden, A. and Tripsanas, E. (2014) “Late Quaternary paleoseismic sedimentary archive from deep central Gulf of Corinth: time distribution of inferred earthquake-induced layers”, Annals of Geophysics, 56(6). doi: 10.4401/ag-6226.
Issue
Vol. 56 No. 6 (2013): Earthquake geology: science, society and critical facilities
Section
SPECIAL ISSUE

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