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Abstract

Recent sedimentation in the Lagunas de Viffafafila is dominated by fine-grained siliciclastic deposits mainly composed of quartz, feldspar, muscovite, illite and kaotinite. Sediments are clay, clayey sifts and clayey fine sands with sparse pedogenic carbonates and organic matter. The recentmost sediments contain diatoms and carbonates with bacterial features. Their structure is composed by paraffel laminatiun, sometimes inclined by adaptation to bottom topography, and erosive surfaces. Rootlets are common to the topo Layering, textures and sedimentary structures refleet energy changes in the hydrological regime mainly related to water incomes from nearby areas. Although saline eflorescences are known to be generated since several millennia ago, satine fayers and minerals are rare in the cores.