Open-closed conduit transitions regulate the large magnitude explosive eruptions of Petrazza, PaleoStromboli I (Stromboli, Italy).

ABSTRACT: A multi-disciplinary approach of volcano-stratigraphy, petrology and geochemistry has shed light on the pre-eruptive processes, the eruptive triggering, behaviour and the architecture of the magma plumbing system during the explosive cycle of Petrazza at ca. 77-75 ka (PaleoStromboli I eruptive epoch, Stromboli). This was the largest magnitude eruptive cycle in Stromboli and one of the largest of the entire Aeolian archipelago, able to produce Vulcanian to sub-Plinian/Plinian phases with distal deposits found in the tephrostratigraphic record of the Tyrrhenian sea and surroundings. Our study highlighted that, differently from the present-day activity, the large magnitude Petrazza eruptive cycle could be attributed to phases of closed-system conditions, as also testified by the in equilibriu

SUBMITTER: Nicotra E 

PROVIDER: S-EPMC11584666 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature