Geological map of the Formentor Peninsula, Island of Mallorca

Abstract

Please click here to download the map associated with this article. Investigation into the Mesozoic strata making up the greater part of the Tertiary thrust slices of the Formentor peninsula of the Serra de Tramuntana of the island of Mallorca has shown that their pre-Miocene character is much more complex than hitherto supposed. Neither of the two lithological units recognised in it is a simple stratigraphic body. Nor do the two lie conformably on one another. Instead the Mesozoic assemblage, as the whole is termed here, is formed of an upper body of fragmental carbonates (usually assigned to the Lias) and a lower one of tabularly bedded carbonates discordant beneath it (said to be uppermost Trias). Furthermore, this complex body was subject to wholesale rearrangement accompanied by local brecciation of the lower unit, also in pre-Miocene times. Both construction of the assemblage and its modification present problems unresolved in the present work. Nevertheless its results are presented here in Map and cross-sections as a contribution to the continuing study of the north eastern extremity of the Betic Cordillera of the Serra de Tramuntana of Mallorca.