Blocs amb origen tsunamític a les costes rocoses del Nord-est de Mallorca (Illes Balears)

Abstract

The rocky shores of the NE Mallorca (Balearic Islands) have accumulations of boulders that have been transported inland by strong water flows from tsunamis and / or storms. These blocks are arranged both individually and in groups, sometimes with an imbricated setting. They are located at heights ranging from 1 to 15 m and distances up to 55 m inland. Most boulders are angular and its weight varies between 3.5 and 24.5 T. This paper shows the block morphometric analysis of five study areas and determines water columns needed for transportation under three different scenarios: submerged blocks, subaerial blocks and joint bounded blocks. Key words: boulder morphometry, Mallorca, rocky coast, storms, tsunamis.