AnaliSi Polliniche Di Una Serie Stratigrafica Dei Sedimenti LacuStri Del PleiStocene Inferiore Nel Bacino Di Leonessa (Rieti- Italia Centrale)

摘要: Abstract Pollen analysis of a stratigraphical sequence the lower Pleistocene lacustrine sediments Leonessa basin (Rieti, Central Italy). — The (Central Italy) is located at an average altitude 900 metres above sea level. A some 200 reached by perforation was investigated pollen various samples. From chronological viewpoint, forest whole discovered there, amongst which Cedrus, Carya, Tsuga, etc. has made' it possible to correlate others northern and central Italy, attributed Pleistocene. long period history contained in series examined (as shown diagram) represents bioclimatological succession favourable prosperous nature, excepting three periods deteriorated climate, two particularly evident conspicuous characterised wide diffusion Ephedra.