Pollen analysis of the pleistocene lacustrine succession of Vallo di Diano (Campania, Italy)
1994
Russo Ermolli, E. (Federico II Univ., Naples (Italy). Dept. des Sciences de la Terre)
A borehole was drilled down to a depth of 207 m in the ancient lake Of Vallo di Diano in southern Italy. From the bottom five sedimentation facies were recognised: fluvial, fluvio-lacustrine, lacustrine, marshy and alluvial fan. The pollen analysis of the lacustrine succession enabled to point out two "glacial-interglacial" cycles. The glacial periods are characterized by high amounts of herbaceous taxa. In particular, in the first glacial period a higher percentage of steppic elements, denoting arid climate, has been found. The interglacial periods are characterized by high amounts of arboreal taxa. The higher percentage of high temperature and water demanding taxa in the second interglacial period indicates that the climate was warmer and wetter than in the first one. The pollen diagram cyclicity together with the tephrostratigraphical and chronostratigraphical data enabled to correlate the analysed succession with the isotopic stages 13 to 16.
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