Sedimentary record of pre-Quaternary tsunamis in the Gibraltar strait area after the Zanclean Flood

  1. P.G. Silva
  2. J. Elez
  3. P. Huerta
  4. J. Civis
  5. M.A. Perucha
  6. E. Roquero
  7. M.A. Rodríguez Pascua
  8. A. Martínez Graña
  9. T. Bardají
  10. K. Reicherter
Book:
Mudanças em Sistemas Ambientais e sua Expressão Temporal: Livro de Resumos da IX Reunião do Quaternário Ibérico
  1. Ana Gomes (ed. lit.)
  2. Célia Gonçalves (ed. lit.)
  3. Lino André (ed. lit.)
  4. Nuno Bicho (ed. lit.)
  5. Tomasz Boski (ed. lit.)

Publisher: Asociación Española para el Estudio del Cuaternario ; Grupo de Trabalho Português para o Estudo do Quaternário (GTPEQ)

Year of publication: 2017

Pages: 137-140

Type: Book chapter

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Abstract

The refilling of the Mediterranean after the Messinian Salinity Crisis make possible to consider the Gibraltar Strait as a giant kilometric dam separating the Atlantic waters from the adjacent dissecated Mediterranean Basin. The available evaluations on associated drawdown (-1000 m), time of refilling (3 years) and associated rates of loading (10 m/week) coming from recent models allow to infer the occurrence of a mega-case of reservoir-induced seismicity (RIS) during or soon after the Zanclean Flooding. Stratigraphic data presented here indicate the occurrence of a giant tsunami event with an estimated wave run-up close to 100 meters. The mixture of pelagic and planktonic foraminifera in the basal breccias of the tsunamites and the species indicate a late Zanclean biostratigraphy.

Data source: Dialnet