1. Faunal evidence of the 1755 Lisbon Tsunami in Gibraltar (S Iberian Peninsula).
- Author
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Abad, Manuel, Clemente, María José, González-Regalado, María Luz, Ruiz, Francisco, Rodríguez Vidal, Joaquín, Cáceres, Luis Miguel, Izquierdo, Tatiana, Pérez Quintero, Juan Carlos, Tosquella, Josep, Pozo, Manuel, Gómez, Paula, Toscano, Antonio, Romero, Verónica, Arroyo, Marta, and Gómez, Gabriel
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TSUNAMIS , *MARINE debris , *PENINSULAS , *RECORD collecting , *LAGOONS , *FACIES - Abstract
• 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. 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. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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