Sedimentology and geochemistry of beach sediments along Sardinia\'s eastern coast: the Gulf of Orosei

Relations between textural and compositional characteristics of the sediments of the small beaches situated in the Gulf of Orosei (east-central Sardinia) are discussed. Beaches to the north are characterized by unimodal sandy sediments, while those to the south are made up of polymodal gravels. The former contain a prevalent siliciclastic component not to be found in the beaches to the south, which are composed of carbonatic sediments. Analyses of the major and, most of all, of the trace elements show not only a clear differentiation between beach components, but also between the single lithologies.