Details
| Original language | English |
|---|---|
| Article number | 28987 |
| Number of pages | 19 |
| Journal | Scientific reports |
| Volume | 14 |
| Issue number | 1 |
| Publication status | Published - 22 Nov 2024 |
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 equilibrium presence of amphibole, indicative of a “steady-state” magmatic status of the system. The explosive activity is then attributed to strong depressurization underwent by the plumbing system due to the cyclic closure/opening of the shallow conduit, possibly also in association with lateral collapse events. As shown by textural and compositional studies on plagioclase crystals, this decompression was also able to recall amphibole bearing mafic magma from the deep portion of the plumbing system (5–15 km of depth).
Keywords
- Eruption triggering, Magma plumbing system, Pre-eruptive processes, Stromboli, Volcano stratigraphy
ASJC Scopus subject areas
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In: Scientific reports, Vol. 14, No. 1, 28987, 22.11.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Open-closed conduit transitions regulate the large magnitude explosive eruptions of Petrazza, PaleoStromboli I (Stromboli, Italy)
AU - Nicotra, E.
AU - Minniti, M.
AU - Ridolfi, F.
AU - Sulpizio, R.
AU - Tranne, C. A.
AU - Lucchi, F.
N1 - Publisher Copyright: © The Author(s) 2024.
PY - 2024/11/22
Y1 - 2024/11/22
N2 - 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 equilibrium presence of amphibole, indicative of a “steady-state” magmatic status of the system. The explosive activity is then attributed to strong depressurization underwent by the plumbing system due to the cyclic closure/opening of the shallow conduit, possibly also in association with lateral collapse events. As shown by textural and compositional studies on plagioclase crystals, this decompression was also able to recall amphibole bearing mafic magma from the deep portion of the plumbing system (5–15 km of depth).
AB - 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 equilibrium presence of amphibole, indicative of a “steady-state” magmatic status of the system. The explosive activity is then attributed to strong depressurization underwent by the plumbing system due to the cyclic closure/opening of the shallow conduit, possibly also in association with lateral collapse events. As shown by textural and compositional studies on plagioclase crystals, this decompression was also able to recall amphibole bearing mafic magma from the deep portion of the plumbing system (5–15 km of depth).
KW - Eruption triggering
KW - Magma plumbing system
KW - Pre-eruptive processes
KW - Stromboli
KW - Volcano stratigraphy
UR - http://www.scopus.com/inward/record.url?scp=85209739648&partnerID=8YFLogxK
U2 - 10.1038/s41598-024-79851-9
DO - 10.1038/s41598-024-79851-9
M3 - Article
C2 - 39578500
AN - SCOPUS:85209739648
VL - 14
JO - Scientific reports
JF - Scientific reports
SN - 2045-2322
IS - 1
M1 - 28987
ER -