Identificador persistente para citar o vincular este elemento: https://accedacris.ulpgc.es/handle/10553/142190
Título: 14C dating of tsunami deposits in arid environments: how challenging can it be? The example of La Graciosa, Canary Islands
Autores/as: Paris, Raphaël
Lavigne, Franck
Hatté, Christine
Betancort, Juan Francisco
Flandrois, Jean Pierre
Vinçon-Laugier, Arnauld
Poulallion, Eve
Falvard, Simon
Mutaqin, Bachtiar W.
Lécuyer, Christophe
Clasificación UNESCO: 2510 Oceanografía
250621 Vulcanología
Palabras clave: 14C Dating
Canary Islands
Cliff collapse
La Graciosa Island
Landslide tsunami, et al.
Fecha de publicación: 2025
Publicación seriada: Marine Geology 
Resumen: 14C dating of tsunami deposits in arid environments is often challenging, especially when there is no organic material available. The marine bioclasts found in the tsunami deposits thus become the main dating possibility. Apart from the reservoir effect, the main source of uncertainty is the age difference between the shells and the tsunami that transported them. Taking as an example a tsunami deposit on the island of La Graciosa (Canary Islands), we demonstrate that the marine shells (Patella) come from different sources, with 14C ages ranging from >45 kBP to 200 BP, the main source being an ancient marine terrace probably of MIS5e age. In addition, we propose a landslide source for this tsunami, the scar of which can be observed on the Famara cliff to the northeast of Lanzarote, just opposite the tsunami deposit outcrops at La Graciosa. In addition to the methodological aspects of shell dating, this study also serves as a reminder that local tsunamis generated by coastal cliff collapses are not a hazard to be neglected.
URI: https://accedacris.ulpgc.es/handle/10553/142190
ISSN: 0025-3227
DOI: 10.1016/j.margeo.2025.107607
Fuente: Marine Geology [ISSN 0025-3227],v. 488, (Octubre 2025)
Colección:Artículos
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