Magma recharge and mush rejuvenation drive paroxysmal activity at Stromboli volcano

Chiara Maria Petrone (), Silvio Mollo, Ralf Gertisser, Yannick Buret, Piergiorgio Scarlato, Elisabetta Bello, Daniele Andronico, Ben Ellis, Alessio Pontesilli, Gianfilippo Astis, Pier Paolo Giacomoni, Massimo Coltorti and Mark Reagan
Additional contact information
Chiara Maria Petrone: Volcano Petrology Group
Silvio Mollo: Sapienza – University of Rome
Ralf Gertisser: Keele University, Keele
Yannick Buret: Core Research Laboratory
Piergiorgio Scarlato: Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Roma 1
Elisabetta Bello: Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Roma 1
Daniele Andronico: Osservatorio Etneo, Sezione di Catania
Ben Ellis: ETH Zurich
Alessio Pontesilli: Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Roma 1
Gianfilippo Astis: Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Roma 1
Pier Paolo Giacomoni: University of Pisa
Massimo Coltorti: University of Ferrara
Mark Reagan: University of Iowa

Nature Communications, 2022, vol. 13, issue 1, 1-17

Abstract: Abstract Open-conduit basaltic volcanoes can be characterised by sudden large explosive events (paroxysms) that interrupt normal effusive and mild explosive activity. In June-August 2019, one major explosion and two paroxysms occurred at Stromboli volcano (Italy) within only 64 days. Here, via a multifaceted approach using clinopyroxene, we show arrival of mafic recharges up to a few days before the onset of these events and their effects on the eruption pattern at Stromboli, as a prime example of a persistently active, open-conduit basaltic volcano. Our data indicate a rejuvenated Stromboli plumbing system where the extant crystal mush is efficiently permeated by recharge magmas with minimum remobilisation promoting a direct linkage between the deeper and the shallow reservoirs that sustains the currently observed larger variability of eruptive behaviour. Our approach provides vital insights into magma dynamics and their effects on monitoring signals demonstrating the power of petrological studies in interpreting patterns of surficial activity.

Date: 2022
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DOI: 10.1038/s41467-022-35405-z

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