Palynological approach in upper Quaternary terrestrial carbonates of central Italy: Anything but a ‘mission impossible’

摘要: A palynological survey has been carried out on two late Quaternary travertine s.l. deposits of central Italy at Serre di Rapolano and Bagnoli (Tuscany region). The principal aim was to improve the understanding factors that affect accumulation preservation pollen grains in thermal (i.e. travertine) ambient temperature calcareous tufa) terrestrial carbonates. For this purpose, 52 526 belonging 118 taxa from local extra-regional sources were analysed 200 samples different tufa lithofacies. Of these, 97 samples, generally travertines, barren palynomorphs. By contrast, remaining well-preserved did not show differential features. These observations suggest pH solutions which or precipitate is a limiting factor causing corrosion and/or destruction grains. Rather, barrenness recorded many appears reflect paucity rather than post-depositional destruction. Results depositional energy environment during deposition plays an important role controlling concentration, as verified both depressions (lower higher concentration) slopes (higher lower concentration), respectively. Analysis data suggests relatively high temperatures rates carbonate are also major for efficient study reveal taphonomy processes critical developing accurate palaeoenvironmental palaeoclimatic reconstructions.