Los arenales costeros de la isla de Menorca

E. SAINZ-AMOR

Abstract


The grain size of Menorca coastal sediment varies from very Fine to granule grade. The mean oscillates between 200-300p in the sand of Migjorn region and between 250-450p in the Tramuntana beaches, except for two cases in which [he grain size is bigger. The amount of carbonates of the sand examiiied is in some beaches very liigh, over 80 %. and the samples are very poor in heavy minerals. The heavy fraction is characterized by the highest values of opaque minerals. Dolomite and piroxenes are dominant among the heavy transparent minerals and rircon, tourmaline and garnet are always present in the :amples examined: biotite. nitile, epidote-zoisite and andalucite may also appear but only in some beache.

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