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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2017-313
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
12 Sep 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Tsunamis boulders on the rocky shores of Minorca (Balearic Islands)
Francesc X. Roig-Munar1, Josep M. Vilaplana2, Antoni Rodríguez-Perea3, José A. Martín-Prieto1, and Bernadí Gelabert4 1QU4TRE, environmental consulting/AXIAL, geology and natural environment, Carritxaret 18.6, es Migjorn Gran, E07749 Minorca, Spain
2Department of Earth and Ocean Dynamics, RISKNAT Group, Geomodels, Universitat de Barcelona, Martí i Franquès, s/n, E08028 Barcelona, Spain
3Department of Geography, Universitat de les Illes Balears, Carretera de Valldemossa, km 7.5, E07122 Palma, Majorca, Spain
4Department of Biology, Universitat de les Illes Balears, Carretera de Valldemossa, km 7.5, E07122 Palma, Majorca, Spain
Abstract. Large boulders have been found on marine cliffs of 24 study areas of Minorca, Balearic Archipelago. These large imbricated boulders, of up to 229 tonnes, are located on platforms that conform the rocky coastline of Minorca, several tenths of meters from the edge of the cliff, up to 15 m above the sea level, and kilometres away from any inland escarpment. They are mostly located on the southeast coast of the island, and numerical models have identified this coastline as a high tsunami impact zone. The age of the boulders in most of the studied localities show a good correlation with historical tsunamis. Age of the boulders, direction of imbrication and estimation of run-up necessary for their placement, indicate dislodging and transport by North Africa tsunami waves that hit the coastline of Minorca.

Citation: Roig-Munar, F. X., Vilaplana, J. M., Rodríguez-Perea, A., Martín-Prieto, J. A., and Gelabert, B.: Tsunamis boulders on the rocky shores of Minorca (Balearic Islands), Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2017-313, in review, 2017.
Francesc X. Roig-Munar et al.
Francesc X. Roig-Munar et al.
Francesc X. Roig-Munar et al.

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Short summary
Large boulders have been found on platforms that conform the rocky coastline of Minorca Island (Balearic Islands), several tenths of meters from the edge of the cliff, up to 15 m above the sea level, and kilometres away from any inland escarpment. The age of the boulders, thedirection of imbrication and the estimation of run-up necessary for their placement, indicate dislodging and transport by North Africa tsunami waves that hit the coastline of Minorca.
Large boulders have been found on platforms that conform the rocky coastline of Minorca Island...
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