Geochemical Stratigraphy of the Prima Porta Travertine Deposit (Roma, Italy)

A stratigraphy of a buried travertine deposit was developed using stable isotope geochemistry, trace elements, and radiometric dating. The identified in well at Prima Porta (north Rome, Italy), located the western boundary Tiber Valley, morpho-tectonic depression extensional origin. It deposited close to spring that discharged groundwaters from nearby volcanic aquifer associated with rise deep-seated CO2-rich fluid. deposition occurred between 53.5 ± 10 ka 24.2 4.7 ka; its activation probably coeval wettest climatic conditions occurring during Marine Isotope Stage 3, end coincided cold arid phase last glacial maximum. chronostratigraphy showed strong variation accumulation rate along depositional sequence, greater lower half much slower upper part, sharp decrease 47 43 ka. chemical described temporal evolution events are correlated global variability; palaeoclimatic changes, fact, influenced hydrological regime indirectly tectonic activity by modulating emission deep CO2, chemistry groundwater, ultimately precipitation travertine.