Relationships among crustal structure, volcanism and strike–slip tectonics in the Lipari–Vulcano Volcanic Complex (Aeolian Islands, Southern Tyrrhenian Sea, Italy)

Ventura, Guido; Vilardo, G.; Milano, Girolamo; Pino, Nicola Alessandro

doi:10.1016/s0031-9201(99)00117-x

Cited by 120 publications

(151 citation statements)

References 47 publications

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“…1). The Vulcanello peninsula is a lava platform with three nested scoria cones aligned NE-SW along the northern ring fault of the La Fossa caldera (Ventura et al, 1999;Blanco -Montenegro et al, 2007). Building of the Vulcanello peninsula started in 1000 A.D. with the formation of the first cone and ended in 1650 A.D. with the emplacement of the latitic lava flow on Punta del Roveto (Arrighi et al, 2006).…”

Section: Starting Materialsmentioning

confidence: 99%

Viscosity changes during crystallization of a shoshonitic magma: new insights on lava flow emplacement

Vetere

Sato

Ishibashi

et al. 2013

Journal of Mineralogical and Petrological Sciences

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Viscosity changes during the crystallization of a shoshonitic lava from the Vulcanello peninsula (Aeolian Islands, southern Tyrrhenian Sea, Italy) were measured by use of a electromagnetic rotational viscometer under Ni-NiO buffered conditions at temperatures ranging from 1539 K to 1381 K. Results showed an increase in effective viscosity from 131 Pa s to 15320 Pa s as the crystal content increased from 0 vol% to ~ 14 vol%. The crystallization processes in the nominally dry shoshonite began at 1420 K with the formation of clinopyroxene, which was followed by the formation of plagioclase and olivine at 1401 K. Experimental observations differed from predictions derived from the use of the Einstein -Roscoe equation with the Marsh (E -R -M) parameter at crystal contents higher than 8 vol%. The relative viscosity of samples was larger than that calculated by E -R -M by a factor of up to 9.5 as the temperature decreased to 1381 K. The large departure of the experimental results from the E -R -M equation predictions was likely caused by the interaction of elongated pyroxene crystals. The measured viscosity data were used to estimate the potential for emplacement of shoshonitic lavas.

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Section: Starting Materialsmentioning

confidence: 99%

Viscosity changes during crystallization of a shoshonitic magma: new insights on lava flow emplacement

Vetere

Sato

Ishibashi

et al. 2013

Journal of Mineralogical and Petrological Sciences

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“…Their detailed measurement gives a mean of N151°±7°. At Vulcano, Lipari, Salina the NNW-SSE trending extension fractures and faults of the last 400 ka show an overall ~E-W extension direction (Mazzuoli et al, 1995;Ventura et al, 1999;De Astis et al, 2003). Their detailed measurement gives a mean of N105°±5°.…”

Section: Page 6 Of 17mentioning

confidence: 99%

“…The Vulcano-Lipari-Salina alignment lies along a NNW-SSE trending dextral transtensive system (Tindari-Letojanni), controlling volcanic activity (Fig. 1b;Ventura et al, 1999) and surface expression of a tear in the slab Page 3 of 17 A c c e p t e d M a n u s c r i p t 3 (Gvirtzman and Nur, 1999;Billi et al, 2006). Stromboli is characterized by NE-SW trending extensional structures, controlling active volcanism and sector collapse (Tibaldi et al, 2003;Tibaldi, 2004).…”

Section: Introductionmentioning

confidence: 99%

Structural features of Panarea volcano in the frame of the Aeolian Arc (Italy): Implications for the 2002–2003 unrest

Acocella¹,

Neri²,

Walter³

2009

Journal of Geodynamics

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Please cite this article as: Acocella, V., Neri, M., Walter, T., Structural features of Panarea volcano in the frame of the Aeolian Arc (Italy): implications for the 2002 unrest, Journal of Geodynamics (2008), doi:10.1016/j.jog.2009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…1), sitting on continental basement of the Calabria basement that is about 20 km thick [13]. The arc is typically divided into three sectors -western, central and eastern -each exhibiting different structural, petrological and volcanological characteristics [10].…”

Section: Geological Setting and Petrologymentioning

confidence: 99%

Oxygen Isotopic Variations in the Clinopyroxene from the Filicudi Volcanic Rocks (Aeolian Islands, Italy): Implications for Open-System Magma Evolution

Santo¹,

Peccerillo²

2008

TOMJ

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Oxygen isotope data are reported for clinopyroxene phenocrysts from volcanic rock samples from Filicudi island, Italy, with the aim of investigating mechanisms of magma evolution and mantle source characteristics in a continental arc volcano. Filicudi rocks range from calc-alkaline basalt to high-K andesite and dacite. Mafic rocks have MgO 6-7 wt%, Mg# 60, Ni < 50 ppm and Cr < 200 ppm, suggesting they represent evolved melts from more primitive mantle-derived parents. Variations of Sr-Nd isotope ratios against silica and MgO suggest magma evolution under opensystem. Oxygen isotope ratios on clinopyroxene phenocrysts from representative rocks are in the range 18 O cpx = + 5.37 to + 6.20 ‰ SMOW, corresponding to 18 O melt = + 5.6 to + 6.4 ‰ and display an overall, but poorly defined, positive correlation with 87 Sr/ 86 Sr and MgO and a rough negative correlation with SiO 2 . Basalts exhibit the highest 18 O cpx values for the volcanic series studied. Together, major, trace element and isotopic data indicate complex, multistage polybaric evolutionary processes for the Filicudi magmas. A process of fractional crystallisation, accompanied by variable degrees of crustal assimilation, best explains the isotopic and petrological data of the Filicudi volcanics. Evolution processes are inferred to have occurred in distinct magma reservoirs sited at different depths. Magma contamination affected basalts more extensively than andesitic and dacitic magmas. This was a consequence of the higher temperature and lower viscosity of mafic melts that were able to assimilate higher amounts of crustal wall rocks. Therefore, andesites and dacites preserved stable and radiogenic isotopic compositions more closely than basalts. Combined trace element and isotopic data suggest that primitive magmas at Filicudi were generated in a heterogeneous and metasomatised mantle source, which underwent contamination by slab-derived fluids. When compared with the nearby islands, isotopic variations of Filicudi rocks resemble more closely those found at Alicudi than at Salina and Vulcano. This suggests that the same kind of evolutionary processes occurred in the western island of Filicudi and Alicudi, whereas at Salina and Vulcano, in the central arc, magmas typically evolved by AFC processes, generating derivative melts that display higher Sr-O isotope compositions compared to parent basalts. These contrasting styles of magma evolution may be related to different structures of the plumbing systems of volcanic islands that were constructed in different sectors of the arc.

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Relationships among crustal structure, volcanism and strike–slip tectonics in the Lipari–Vulcano Volcanic Complex (Aeolian Islands, Southern Tyrrhenian Sea, Italy)

Cited by 120 publications

References 47 publications

Viscosity changes during crystallization of a shoshonitic magma: new insights on lava flow emplacement

Viscosity changes during crystallization of a shoshonitic magma: new insights on lava flow emplacement

Structural features of Panarea volcano in the frame of the Aeolian Arc (Italy): Implications for the 2002–2003 unrest

Oxygen Isotopic Variations in the Clinopyroxene from the Filicudi Volcanic Rocks (Aeolian Islands, Italy): Implications for Open-System Magma Evolution

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