Las grietas de acantilado como un nuevo registro de tsunamitas : ejemplo en la costa de Gibraltar

Abstract

Main tsunami records around the world coasts are associated with low-lying sandy coasts or estuarine areas. In the Rock of Gibraltar formed by limestone cliffs these records are less common and they are limited to the lagoon (The Inundation) located at the isthmus that joins the Rock with the mainland. Tsunamigenic deposits filling deep open crevices that record marine events since ca. 3,000 years BP have been studied at the southwestern end, i.e. Rosia Bay. The most represented deposits could be related with both Atlantic and Mediterranean tsunamis occurred in ~1000 BC, 218-209 BC, 60 AD, 365 AD and 1755 AD. These new tsunamite-type evidence represent a complementary tool in the geological analysis and chronology of these high-energy marine events.