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(Article of periodic en Anglais - 2009)

Document title

Evidence of high-energy events in shelly layers interbedded in coastal Holocene sands in Cadiz Bay (south-west Spain)

Authors(s) and Affiliation(s)

GUTIÉRREZ-MAS J.M. (1) ; JUAN C. (1) ; MORALES J.A. (2) ;
(1) Dep. of Geology, Fac. of Marine and Environmental Science, Univ., Cádiz, ESPAGNE
(2) Dep. of Geology, Univ., Huelva, ESPAGNE

Abstract

In this work, shelly layers interbedded in relict littoral sands located in the La Algaida pinewood, on the edge of the Rio San Pedro tidal channel, in Cadiz Bay (south-west Spain) have been studied. The main constituents of the shelly beds are Glycimeris valves, organisms which are no longer found as live specimens in the present-day sea bed of Cadiz Bay. From their appearance, the origin of these shelly beds could be related to sea washovers generated by tidal or storm action, but their disposition and height over the present sea level implies that even higher energy agents were involved in their formation, such as major storms or tsunami waves. If the proximity of the study zone to the limit of the African and Iberian plates is considered, where several historical earthquakes and tsunamis have taken place, it is possible to think that these deposits could be a consequence of sporadic and successive washovers, generated by tsunamis occurring between AD 800 and AD 1200

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no6 [pp. 810-823]

Bibliographic references : 1,5 p.

Collation : 11 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1770

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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