Resumen de Bloques sobre acantilados marinos en la isla de Menorca (illes Balears): ¿tsunamis o tormentas?
Francesc Xavier Roig Munar, Antonio Rodríguez Perea, José Angel Martín Prieto, J. M. Vilaplana, Guillem Xavier Pons Buades, Biel Gelabert Noguera, Miquel Mir Gual
Marine cliffs of Minorca Island show metric size boulders that have been transported inland by storms waves and/or tsunamis. These blocks, deposited singly or forming ridges parallel to the coast, are found within heights ranging from 0-30 m above sea level and up to 75 m inland from the coastline. Of the nearly 3000 measured blocks, in 14 areas, those whose transport requires more energy were selected (Transport Figure > 1000). Their size is 2.6 x 2 x 0.7 m in average. Blocks are 11.1 Tm in weight, located 10.6 m a.s.l. and 48.6 m inland. Since the maximum wave height in this area is 8 m, it must be concluded that tsunamis have taken part in its genesis. Preliminary results suggest the coexistence of mixed events: mega storms and tsunamis waves hitting the coast have been able to move boulders up to 369 Tm.
