Collezione Completa 2023

PubAIV 2023
(aggiornato a Febbraio 2023)

1) Magmi e sistemi di alimentazione (3 articoli) (+1 articolo)
2) Dinamiche eruttive e di messa in posto (1 articolo) (+1 articolo)
3) Geologia e struttura dei vulcani (2 articoli) 
4) Monitoraggio, pericolosità e rischio vulcanico (0 articoli)
5) Vulcani e società (1 articolo) (+1 articolo)

Tematica 1: Magmi e sistemi di alimentazione
Costa S., Caricchi L., Pistolesi M., Gioncada A., Masotta M., Bonadonna C., Rosi M. (2023)
A data driven approach to mineral chemistry unveils magmatic processes associated with long-lasting, low-intensity volcanic activity.
Sci Rep 13, 1314 (2023)
Data di pubblicazione: 24/01/2023
PubAIV-ID-00096 - Articolo in Rivista (open access)

The most frequent volcanic eruptions are of low‐intensity and small magnitude. They produce abundant ash‐sized (< 2 mm) clasts, which are too small to establish quantitative links between magmatic processes and eruptive dynamics using classic approaches. This inhibits our ability to study the past behaviour of frequently erupting volcanoes, essential to predict their future activity and mitigate their impact. The Palizzi unit (10–13th century, Vulcano, Italy) includes a prototype sequence of ash deposits resulting from prolonged Vulcanian eruptions punctuated by those of two larger sub‐Plinian events. We apply Hierarchical Clustering to chemical analyses of clinopyroxene collected along the stratigraphy to decipher magma dynamics during this eruptive period. We identify periods of magma input and we link deep magmatic processes to eruptive dynamics, also showing that our approach can be used to connect magma and eruptive dynamics in any volcanic sequence. This is essential to track the processes occurring during frequent eruptions and to identify the build‐up to larger explosive events.
Lo Forte F.M., Aiuppa A., Rotolo S.G., Zanon V. (2022)
Temporal evolution of the Fogo Volcano magma storage system (Cape Verde Archipelago): a fluid inclusions perspective.
Journal of Volcanology and Geothermal Research, Volume 433, 2023.
Data di pubblicazione: 05/12/2022
PubAIV-ID-00095 - Articolo in Rivista (open access)

The architecture of the magma storage system underneath Fogo Volcano (Cape Verde Archipelago) is characterised
using novel fluid inclusion results from fifteen basanites, spanning the last 120 thousand years of volcanic
activity, and encompassing a major flank collapse event at ~73 ka. Fluid inclusions, hosted in olivine and clinopyroxene,
are made of pure CO2, and based on their textural characteristics, are distinguished in early (Type I)
and late (Type II) stage. Inclusions homogenize to a liquid phase in the 2.8 to 30.8 °C temperature range.
Densities values, recalculated assuming an original 10% H2O content at the time of trapping, range from 543 to
952 kg⋅m3, and correspond to entrapment or re-equilibration pressure ranges of 500–595 MPa, 700–740 MPa,
and 245–610 MPa respectively for pre-collapse, early post-collapse, and Holocene/historical eruptions. These
entrapment pressures are interpreted as reflecting the existence of two main magma accumulation zones at ~25
km and ~ 13–21 km depth, and a zone of fluid inclusion re-equilibration at 9–12 km depth. There is evidence of a
complex temporal evolution of the magma system. Historical eruptions, and especially the three most recent ones
(occurred in 1951, 1995 and 2014–25), bring fluid inclusion evidence for transient, pre-eruptive shallow (9–17
km depth) magma ponding. Early post-collapse (60 ka) volcanics, in contrast, document fast magma transport
from ~25 km, and suggest a reconfiguration of the magma system after the Monte Amarelo collapse event.
Perinelli C., Fabbrizio A., Bonechi B., Gaeta M., Conte A.M. (2023)
Experimental cannibalization of plagioclase by alkaline basalt magmas.
Periodico di Mineralogia, 92, 75-95 (2023)
Data di pubblicazione: 13/02/2023
PubAIV-ID-00099 - Articolo in Rivista (open access)

Time-series crystallization/dissolution experiments were conducted on a natural potassic basalt seeded with bytownitic plagioclases (Plg) at atmospheric pressure, in air, at 1180-1240 °C and isothermal dwell time up to 20 hours. Plg-seed presence promotes the early formation of new-Plg, dampening the clinopyroxene (Cpx) crystallization. New-Plgs grow at a rate from 10 -6 up to 10 -8 cm·s-1 as the dwell time increases. Seeds overgrow at similar rate. Cpx crystallizes with a delay of at least 3 hours; this has a significant impact on the composition of both residual melt and new-Plgs. For undercooling>35 °C the Cpx delay causes a strong supersaturation of this phase in the melt resulting in a decrease in the new-Plg nucleation rate by 2 orders of magnitude in the 3 h-experiment. In the 15h-run, Cpx coarsening and the decrease of crystallinity suggest the achievement of a near-equilibrium conditions. Cpx growth rate is in the order of 10-7 cm·s-1 showing very limited variation. Finally, for the investigated superheating (5-15 °C) only the long lasting experiments allows an estimation of Plg dissolution rate (10-9 cm·s-1) although changes in the melt composition are already detectable in the 3h-runs.As a whole our results suggest that in natural systems, the takeover of antecrysts/xenocrysts by a magma can induce on a short time scales, changes in its initial nucleation behavior with remarkable petrological implications for the solidification paths and eruptive dynamics of potassic magmatic systems.
Tematica 2: Dinamiche eruttive e di messa in posto
Di Fiore F., Vona A., Scarani A., Giordano G., Romano C., Giordano D., Caricchi L., Martin Lorenzo A., Rodriguez F., Coldwell B., Hernandez P., Pankhurst M. (2023)
Experimental Constraints on the Rheology of Lavas From 2021 Cumbre Vieja Eruption (La Palma, Spain).
Geophysical Research Letter, Volume 50, Issue 4, 2023.
Data di pubblicazione: 14/02/2023
PubAIV-ID-00100 - Articolo in Rivista (open access)

The 2021 Tajogaite eruption of Cumbre Vieja (La Palma, Spain) was typified by the emission of low viscosity lavas that flowed at high velocities and inundated a large area. We experimentally investigated the rheological evolution of melt feeding the eruption through concentric cylinder viscometry to understand the exceptional flowing ability of these lavas and constrain its emplacement dynamics. We conducted a set of cooling deformation experiments at different cooling rates (from 0.1 to 10 °C/min), and isothermal deformation experiments at subliquidus dwell temperatures between 1225 and 1175°C. All experiments were conducted at a shear rate of 10 s−1. Results show that disequilibrium crystallization and its timescale fundamentally control the rheological evolution of the melt, resulting in different rheological response to deformation of the crystal-bearing magmatic suspension. Integrating rheological data with field observations allows us to shed light on the mechanisms that govern the high flowability of these lavas.
Tematica 3: Geologia e struttura dei vulcani
Malaguti A.B., Branca S., Speranza F., Coltelli M., Del Carlo P., Renzulli A. (2023)
Age of the Valle del Bove formation and chronology of the post-collapse flank eruptions, Etna volcano (Italy).
Journal of Volcanology and Geothermal Research, Volume 434
Data di pubblicazione: 13/01/2023
PubAIV-ID-00097 - Articolo in Rivista (non open access)

The Valle del Bove is a profound and wide scar on the east Etna flank witnessing the Holocene main volcano-tectonic event of the volcano, frequently invaded by lava flows during the last centuries. The Valle del Bove slope failure produced the Milo debris avalanche deposit on the lower east flank that is partially covered by the Mongibello lavas and a pyroclastic succession. In this paper, we constrain for the first time the age of the Milo debris avalanche deposit and the overlying lava succession exposed at three quarries recently caved at the valley mouth through a multidisciplinary approach integrating stratigraphic and petrographic analyses, 14C, and paleomagnetic dating. In particular, 14C age determinations of the Milo debris avalanche deposit indicate that the initial stage of the catastrophic flank collapse of the Valle del Bove occurred at 7478–7134 BCE during the Mesolithic age. Conversely, the main portion of the lava succession filling the valley floor emplaced after the sub-Plinian picritic eruption occurred at 2579–2278 BCE (FS tephra layer) consistently with the increasing occurrence frequency of flank eruptions documented in the geological record of Etna during the past 4000 yrs. Paleomagnetic dating highlighted that in the study area the sub-Plinian eruption was followed by two quasi-contemporaneous flank eruptions during the Late Copper age (2600–2400 BCE), whereas other two flank eruptions occurred during Greek-Roman and Medieval ages. These results have relevant implications on the stratigraphy and evolution of Etna, particularly on the Valle del Bove initial collapse and the relative emplacement of the Chiancone detritic-alluvial sequence.
Scandone R. (2022)
Vesuvio, storie di uomini e vulcani.
Data di pubblicazione: 30/12/2022
PubAIV-ID-00094 - Libro

Nel tentativo di tenere vivo il ricordo di un vulcano ancora attivo, ne ripercorriamo la storia e il suo intreccio con le vicende umane, evidenziando il ruolo da esso svolto nello sviluppo della vulcanologia nonché i drammi legati alla sua imprevedibilità..
Seguiremo cronologicamente l’attività del vulcano e gli studi fatti per conoscerlo, fin dagli inizi, entrando più dettagliatamente nel periodo storico, con le molte eruzioni che hanno provocato lutti e rovine e allo stesso tempo hanno generato un territorio fertile, stimolato una società vivace e circondato di attenzione un panorama di ineguagliabile bellezza.
Tematica 4: Monitoraggio, pericolosità e rischio vulcanico
Tematica 5: Vulcani e società
Manni M. (2022)
Origini del culto e le locali leggende di San Calogero: una doppia chiave per l’interpretazione del vulcanismo medievale di Lipari.
Giornate di Geologia & Storia. Memorie Descrittive della Carta Geologica d’Italia, Dipartimento per il Servizio Geologico d’Italia, ISPRA, 109: pp. 336 - pp. 157-166, Nisio S. (Eds) (2022).
Data di pubblicazione: 12/12/2022
PubAIV-ID-00098 - Capitolo di un Libro (open access)

The island of Lipari boasts a very complex volcanological
history that lasted until the Late Middle Ages,
interacting with that of the anthropic communities and
permeating their culture. The risk perceived by the inhabitants
during the resurgence of Lipari-Vulcano led to calling
on thaumaturgists or miracle workers to protect the territory.
Among these, of note was the hermit Calogero, sent
to Lipari around 525 AD to tame the on-going volcanic
phenomena, as can be seen from the writings. Some volcanological
studies have incorporated the contents of the
story without distinguishing between the original historical
aspect and the traditional oral one, reformulated locally
according to the last volcanic events taking place on the
island in the 13th century. Following the interpretation proposed
in this work, contemporary legends are linked to this
last eruptive cycle, while the hypothesis that an eruptive
center was already active in the 6th century, as suggested by
contemporary sources, is still pertinent.
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