Faunal evidence of the 1755 Lisbon Tsunami in Gibraltar (S Iberian Peninsula) - 16/09/22
, María José Clemente c, María Luz González-Regalado c, Francisco Ruiz c, d, Joaquín Rodríguez Vidal c, d, Luis Miguel Cáceres c, d, Tatiana Izquierdo a, Juan Carlos Pérez Quintero e, Josep Tosquella c, Manuel Pozo f, Paula Gómez c, d, Antonio Toscano c, Verónica Romero c, Marta Arroyo c, Gabriel Gómez cHighlights |
• | The Holocene paleoenvironmental evolution of a coastal lagoon is recorded. |
• | An open bay was progressively confined until forming a restricted lagoon. |
• | The 1755 tsunami deposits are identified near the top of the succession. |
• | This deposit constitutes the first faunal evidence of this event for the Mediterranean Sea. |
Abstract |
This paper analyzes the first systematic faunal record of the 1755 Lisbon tsunami in the Mediterranean. On the basis of sedimentological and paleontological features, the sedimentary record of a core collected in Gibraltar was divided into six sedimentary facies, with a paleoenvironmental evolution from a shallow marine paleoenviroment to an increasingly restricted lagoon. This record includes a bioclastic layer deposited by the 1755 Lisbon tsunami and characterized by an erosive base, presence of basal rip-up clasts and abundant shell debris composed by marine and brackish molluscs. The paleoenvironmental reconstruction derived from the foraminiferal analysis is congruent with that inferred from the sedimentary and the macrofaunal reconstructions, with the introduction of brackish species into the innermost, intertidal areas of a confined lagoon. This paleontological record is the first faunal evidence of the 1755 Lisbon tsunami in the Mediterranean.
Le texte complet de cet article est disponible en PDF.Keywords : Sedimentary facies, Macrofauna, Foraminifera, 1755 Lisbon Tsunami, Gibraltar, S Iberian Peninsula
Plan
| ☆ | Corresponding editor: Frédéric Quillévéré. |
Vol 72
P. 1-11 - août 2022 Retour au numéro
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