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Modeling the magma plumbing system of Vulcano (Aeolian Isalnds, Italy) by integrated fluid inclusion geo-barometry, petrology and geophysics.
Author(s)
Language
English
Status
Published
Peer review journal
Yes
Title of the book
Issue/vol(year)
1/34 (2006)
Publisher
Geological Society of America
Pages (printed)
17-20
Issued date
January 2006
Abstract
An integrated petrological, geophysical, and fluid-inclusion model is presented for the
internal structure of the active Vulcano Island, Southern Tyrrhenian Sea. The present
structure of the magma storage system in the crust consists of two major deep accumulation
zones located at 17–21 km and 8–13 km depth, plus a minor one at 1–5 km depth,
beneath Fossa Cone. The deepest magma accumulation zone contains mafic melts and is
located at the transition between the upper mantle and a granulitic lower crust. This
reservoir has been active since the onset of the exposed volcanism, and has undergone
continuous fractional crystallization, crustal assimilation, and mixing with primary melts
from the mantle. Slightly differentiated magmas from the deep reservoir feed a shallower
accumulation zone in the middle and upper crust, or erupt directly to the surface through
lateral vents. Deep melts probably enter the shallowest reservoir shortly before magma
outbreak at the surface, and may represent the trigger of eruptions. According to our
model, magmatic eruptions at Vulcano are related to deep magma dynamics, whereas
most of the changes in the geochemical and geophysical parameters observed at the active
cone in the last century could be due to shallow depth modification of rock permeability,
possibly as a result of cone gravitative instability and/or tectonic events. Implications for
strategies of volcano monitoring and for forecasting eruptions are briefly discussed.
internal structure of the active Vulcano Island, Southern Tyrrhenian Sea. The present
structure of the magma storage system in the crust consists of two major deep accumulation
zones located at 17–21 km and 8–13 km depth, plus a minor one at 1–5 km depth,
beneath Fossa Cone. The deepest magma accumulation zone contains mafic melts and is
located at the transition between the upper mantle and a granulitic lower crust. This
reservoir has been active since the onset of the exposed volcanism, and has undergone
continuous fractional crystallization, crustal assimilation, and mixing with primary melts
from the mantle. Slightly differentiated magmas from the deep reservoir feed a shallower
accumulation zone in the middle and upper crust, or erupt directly to the surface through
lateral vents. Deep melts probably enter the shallowest reservoir shortly before magma
outbreak at the surface, and may represent the trigger of eruptions. According to our
model, magmatic eruptions at Vulcano are related to deep magma dynamics, whereas
most of the changes in the geochemical and geophysical parameters observed at the active
cone in the last century could be due to shallow depth modification of rock permeability,
possibly as a result of cone gravitative instability and/or tectonic events. Implications for
strategies of volcano monitoring and for forecasting eruptions are briefly discussed.
References
Barberi, F., Gandino, A., Gioncada, A., La Torre, P.,
Sbrana, A., and Zenucchini, C., 1994, The
deep structure of the Eolian arc (Filicudi-
Panarea-Vulcano sector) in light of gravity,
magnetic and volcanological data: Journal of
Volcanology and Geothermal Research, v. 61,
p. 189–206.
Bonaccorso, A., 2002, Ground deformation of the
south-central sector of the Aeolian islands volcanic
arc from geodetic data: Tectonophysics,
v. 351, p. 181–192.
Castello, B., Selvaggi, G., Chiarabba, C., and Amato,
A., 2005, CSI Catalogo della sismicita’ italiana
1981–2002, version 1.0: Rome, Istituto
Nazionale di Geofisica e Vulcanologia-CNT.
Chiodini, G., Cioni, R., Falsaperla, S., Guidi, M.,
Marini, L., and Montalto, A., 1992, Geochemical
and seismological investigations at Vulcano
(Aeolian islands) during 1978–1989:
Journal of Geophysical Research, v. 97,
p. 11,025–11,032.
Chiodini, G., Cioni, R., Marini, L., and Panichi, C.,
1995, Origin of the fumarolic fluids of Vulcano
Island, Italy and implication for volcanic
surveillance: Bulletin Volcanologique, v. 57,
p. 99–110.
Clocchiatti, R., Del Moro, A., Gioncada, A., Joron,
J.L., Mosbah, M., Pinarelli, L., and Sbrana,
A., 1994, Assessment of a shallow magmatic
system: The 1888–90 eruption, Vulcano Island,
Italy: Bulletin Volcanologique, v. 56,
p. 466–486.
Continisio, R., Ferrucci, F., Gaudiosi, G., Lo Bascio,
D., and Ventura, G., 1997, Malta Escarpment
and Mt. Etna: Early stages of an asymmetric
rifting process? Evidences from geophysical
and geological data: Acta Vulcanologica, v. 9,
p. 39–47.
De Astis, G.F., La Volpe, L., Peccerillo, A., and Civetta,
L., 1997, Volcanological and petrological
evolution of the Vulcano Island (Aeolian Arc,
Southern Tyrrhenian Sea): Journal of Geophysical
Research, v. 102, p. 8021–8050.
Frezzotti, M.L., and Peccerillo, A., 2004, Fluid inclusion
and petrological studies elucidate reconstruction
of magma conduits: Eos (Transactions,
American Geophysical Union), v. 85,
p. 157–163.
Frezzotti, M.L., Zanon, V., Peccerillo, A., and Nikogosian,
I., 2004, Silica-rich melts in quartz
xenoliths from Vulcano island and their bearing
on processes of crustal anatexis and crustmagma
interaction beneath the Aeolian Arc,
southern Italy: Journal of Petrology, v. 45,
p. 3–26.
Locke, C.A., Rymer, H., and Cassidy, J., 2003,
Magma transfer processes at persistently active
volcanoes: Insight from gravity observations:
Journal of Volcanology and Geothermal
Research, v. 127, p. 73–86.
Martini, M., 1996, Chemical characters of the gaseous
phase in different stages of volcanism:
Precursors and volcanic activity, in Scarpa, R.,
and Tilling, R.I., eds., Monitoring and mitigation
of volcanic hazards: Berlin, Springer,
p. 199–219.
McLeod, P., and Sparks, R.S.J., 1998, The dynamics
of xenolith assimilation: Contributions to Mineralogy
and Petrology, v. 132, p. 21–34.
Mercalli, G., and Silvestri, O., 1891, L’eruzione
dell’Isola di Vulcano incominciata il 3 agosto
1888 e terminata il 22 marzo 1890: Annali
dell’ufficio Centrale di Meteorologia e Geodinamica,
v. 10, p. 71–281.
Neri, G., Barberi, G., Orecchio, B., and Aloisi, M.,
2002, Seismotomography of the crust in the
transition zone between the southern Tyrrhenian
and Sicilian tectonic domains: Geophysical
Research Letters, v. 29, doi: 10.1029/
2002GL015562
Nuccio, M., Paonita, A., and Sortino, F., 1999, Geochemical
modelling of mixing between magmatic
and hydrothermal gases: The case of
Vulcano Island, Italy: Earth and Planetary Science
Letters, v. 167, p. 321–333.
Panza, G.F., Pontevivo, A., Chimera, G., Raykova,
R., and Aoudia, A., 2003, The lithosphereasthenosphere:
Italy and surroundings: Episodes,
v. 26, p. 169–174.
Sicardi, L., 1941, Il recente ciclo dell’attivita` fumarolica
dell’isola di Vulcano: Bulletin Volcanologique,
v. 7, p. 85–140.
Ventura, G., Vilardo, G., Milano, G., and Pino,
N.A., 1999, Relationships among crustal
structure, volcanism and strike-slip tectonics
in the Lipari-Vulcano volcanic complex (Aeolian
Islands, Southern Tyrrhenian Sea, Italy):
Physics of the Earth and Planetary Interiors,
v. 116, p. 31–52.
Zanon, V., Frezzotti, M.L., and Peccerillo, A., 2003,
Magmatic feeding system and crustal magma
accumulation beneath Vulcano Island (Italy):
Evidence from fluid inclusions in quartz xenoliths:
Journal of Geophysical Research,
v. 108, 2298, doi:10.1029/2002JB002140.
Zollo, A., Gasparini, G., Virieux, J., Le Meur, H.,
de Natale, G., Biella, G., Boschi, E., Capuano,
P., de Franco, R., dell’Aversana, P., de Matteis,
R., Guerra, I., Iannaccone, G., Mirabile, L.,
and Vilardo, G., 1996, Seismic evidence for a
low-velocity zone in the upper crust beneath
Mount Vesuvius: Science, v. 274, p. 592–594.
Sbrana, A., and Zenucchini, C., 1994, The
deep structure of the Eolian arc (Filicudi-
Panarea-Vulcano sector) in light of gravity,
magnetic and volcanological data: Journal of
Volcanology and Geothermal Research, v. 61,
p. 189–206.
Bonaccorso, A., 2002, Ground deformation of the
south-central sector of the Aeolian islands volcanic
arc from geodetic data: Tectonophysics,
v. 351, p. 181–192.
Castello, B., Selvaggi, G., Chiarabba, C., and Amato,
A., 2005, CSI Catalogo della sismicita’ italiana
1981–2002, version 1.0: Rome, Istituto
Nazionale di Geofisica e Vulcanologia-CNT.
Chiodini, G., Cioni, R., Falsaperla, S., Guidi, M.,
Marini, L., and Montalto, A., 1992, Geochemical
and seismological investigations at Vulcano
(Aeolian islands) during 1978–1989:
Journal of Geophysical Research, v. 97,
p. 11,025–11,032.
Chiodini, G., Cioni, R., Marini, L., and Panichi, C.,
1995, Origin of the fumarolic fluids of Vulcano
Island, Italy and implication for volcanic
surveillance: Bulletin Volcanologique, v. 57,
p. 99–110.
Clocchiatti, R., Del Moro, A., Gioncada, A., Joron,
J.L., Mosbah, M., Pinarelli, L., and Sbrana,
A., 1994, Assessment of a shallow magmatic
system: The 1888–90 eruption, Vulcano Island,
Italy: Bulletin Volcanologique, v. 56,
p. 466–486.
Continisio, R., Ferrucci, F., Gaudiosi, G., Lo Bascio,
D., and Ventura, G., 1997, Malta Escarpment
and Mt. Etna: Early stages of an asymmetric
rifting process? Evidences from geophysical
and geological data: Acta Vulcanologica, v. 9,
p. 39–47.
De Astis, G.F., La Volpe, L., Peccerillo, A., and Civetta,
L., 1997, Volcanological and petrological
evolution of the Vulcano Island (Aeolian Arc,
Southern Tyrrhenian Sea): Journal of Geophysical
Research, v. 102, p. 8021–8050.
Frezzotti, M.L., and Peccerillo, A., 2004, Fluid inclusion
and petrological studies elucidate reconstruction
of magma conduits: Eos (Transactions,
American Geophysical Union), v. 85,
p. 157–163.
Frezzotti, M.L., Zanon, V., Peccerillo, A., and Nikogosian,
I., 2004, Silica-rich melts in quartz
xenoliths from Vulcano island and their bearing
on processes of crustal anatexis and crustmagma
interaction beneath the Aeolian Arc,
southern Italy: Journal of Petrology, v. 45,
p. 3–26.
Locke, C.A., Rymer, H., and Cassidy, J., 2003,
Magma transfer processes at persistently active
volcanoes: Insight from gravity observations:
Journal of Volcanology and Geothermal
Research, v. 127, p. 73–86.
Martini, M., 1996, Chemical characters of the gaseous
phase in different stages of volcanism:
Precursors and volcanic activity, in Scarpa, R.,
and Tilling, R.I., eds., Monitoring and mitigation
of volcanic hazards: Berlin, Springer,
p. 199–219.
McLeod, P., and Sparks, R.S.J., 1998, The dynamics
of xenolith assimilation: Contributions to Mineralogy
and Petrology, v. 132, p. 21–34.
Mercalli, G., and Silvestri, O., 1891, L’eruzione
dell’Isola di Vulcano incominciata il 3 agosto
1888 e terminata il 22 marzo 1890: Annali
dell’ufficio Centrale di Meteorologia e Geodinamica,
v. 10, p. 71–281.
Neri, G., Barberi, G., Orecchio, B., and Aloisi, M.,
2002, Seismotomography of the crust in the
transition zone between the southern Tyrrhenian
and Sicilian tectonic domains: Geophysical
Research Letters, v. 29, doi: 10.1029/
2002GL015562
Nuccio, M., Paonita, A., and Sortino, F., 1999, Geochemical
modelling of mixing between magmatic
and hydrothermal gases: The case of
Vulcano Island, Italy: Earth and Planetary Science
Letters, v. 167, p. 321–333.
Panza, G.F., Pontevivo, A., Chimera, G., Raykova,
R., and Aoudia, A., 2003, The lithosphereasthenosphere:
Italy and surroundings: Episodes,
v. 26, p. 169–174.
Sicardi, L., 1941, Il recente ciclo dell’attivita` fumarolica
dell’isola di Vulcano: Bulletin Volcanologique,
v. 7, p. 85–140.
Ventura, G., Vilardo, G., Milano, G., and Pino,
N.A., 1999, Relationships among crustal
structure, volcanism and strike-slip tectonics
in the Lipari-Vulcano volcanic complex (Aeolian
Islands, Southern Tyrrhenian Sea, Italy):
Physics of the Earth and Planetary Interiors,
v. 116, p. 31–52.
Zanon, V., Frezzotti, M.L., and Peccerillo, A., 2003,
Magmatic feeding system and crustal magma
accumulation beneath Vulcano Island (Italy):
Evidence from fluid inclusions in quartz xenoliths:
Journal of Geophysical Research,
v. 108, 2298, doi:10.1029/2002JB002140.
Zollo, A., Gasparini, G., Virieux, J., Le Meur, H.,
de Natale, G., Biella, G., Boschi, E., Capuano,
P., de Franco, R., dell’Aversana, P., de Matteis,
R., Guerra, I., Iannaccone, G., Mirabile, L.,
and Vilardo, G., 1996, Seismic evidence for a
low-velocity zone in the upper crust beneath
Mount Vesuvius: Science, v. 274, p. 592–594.
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