Mediterranean tephrostratigraphy and peri-Tyrrhenian explosive activity revaluated in light of the 430-365 ka record from Fucino Basin (central Italy)

Accurately reconstructing the scale and timing of dynamic processes, such as Middle-Late Pleistocene explosive volcanism rapid climatic changes, requires rigorous independent chronological constraints. In this framework, study distal volcanic ash layers, or tephra, transported deposited over wide regions during eruptions, is increasingly being recognised a fundamental chronostratigraphic tool for addressing these challenging issues. Here we present high-resolution tephra record preserved in lacustrine sedimentary succession Fucino Basin, central Italy. The investigated spans 430-365 ka time interval, covering entirety Marine Isotope Stage 11 (MIS 11), provides important insights into peri-Tyrrhenian potassic from sources located Italy against backdrop Mediterranean palaeooclimate records. fall events interval reconstructed through detailed lithostratigraphic, geochemical 40Ar/39Ar geochronological characterization deposits discrete layers F4-F5 sediment core. This work complemented by similarly selected proximal pyroclastic units volcanoes. Geochemical fingerprinting means their major, minor trace elements Sr isotope composition indicates that all thirty-two derived stratigraphically continuous allowed development fully independent, age-constrained, Bayesian age-depth model interval. age-model allows us to establish modelled ages within are not directly dated. resulting dated clearly reveals highly resolved previously unparalelled chronicle activity Vulsini, Vico, Sabatini, Colli Albani Roccamonfina complexes. Our benchmark valuable dataset be used reference any future application tephrostratigraphic methods across area both deeper time. contribution underlines importance integrating records more accurately long-term comprehensive eruption