Volatile Evolution of Magma Associated with the Solchiaro Eruption in the Phlegrean Volcanic District (Italy)

Esposito, Rosario; Bodnar, Robert J.; Danyushevsky, Leonid V.; Vivo, Benedetto De; Fedele, Lorenzo; Hunter, Jerry; Lima, Annamaria; Shimizu, Nobumichi

doi:10.1093/petrology/egr051

Cited by 73 publications

(68 citation statements)

References 67 publications

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“…Esposito et al (2011) measured the density of CO 2 in a vapor bubble in a MI from the Solchiaro eruption at Procida Island, Italy, using Raman spectroscopy, and determined the concentration of CO 2 in the glass using secondary ion mass spectrometry (SIMS). Mass balance reconstruction (using a method described by Steele-MacInnis et al, 2011) of the bulk composition of the trapped melt revealed that the vapor bubble contained ~64% of the total CO 2 in the MI.…”

Section: Figurementioning

confidence: 99%

“…Approaches to address and/or correct for the presence of bubbles in MI vary. Some workers have avoided or limited the use of MI that contain bubbles (Lowenstern, 1994;Wallace and Gerlach, 1994;Wallace et al, 1999;Helo et al, 2011;Esposito et al, 2011;Lloyd et al, 2013). When only bubble-bearing MI were available for study, some workers have acknowledged potential contributions from the bubble by stating that the CO 2 contents and pressures determined from the MI are minimum values (Anderson and Brown, 1993;Cervantes and Wallace, 2003;Spilliaert et al, 2006;Kamenetsky et al, 2007;Johnson et al, 2008;Vigouroux et al, 2008;Ruscitto et al, 2010;Esposito et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Bubbles matter: An assessment of the contribution of vapor bubbles to melt inclusion volatile budgets

Moore

Gazel

Tuohy

et al. 2015

American Mineralogist

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bubbles matter: An assessment of the contribution of vapor bubbles to melt inclusion volatile budgets

Moore

Gazel

Tuohy

et al. 2015

American Mineralogist

Self Cite

199

203

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“…Rather, the temperature range reflects differences in melt composition reflecting trapping at different times during evolution of the magma. Thus, more primitive MI entrapped in more primitive olivine/clinopyroxene show homogenization temperatures that are much higher than MI entrapped in more evolved phenocrysts (e.g., Fo-poor olivine) [30]. Furthermore, phenocrysts may not be linked genetically and thus MI analyzed may have formed in totally different environments within the magma body, and/or at different times.…”

Section: Resultsmentioning

confidence: 99%

“…Samples studied are from the Toba Tuff eruption (Sumatra), from the Solchiaro eruption on the Island of Procida (Southern Italy), and from the Sarno eruption at Monte Somma-Vesuvius (Southern Italy). The geology and petrologic characteristics of the Toba Tuff [27][28][29], Solchairo eruption [30] (and references therein) and the Sarno eruption [31,32] have been described previously, and the interested reader is referred to these sources for additional information.…”

Section: Introductionmentioning

confidence: 99%

Application of the Linkam TS1400XY heating stage to melt inclusion studies

Esposito

Klébesz²,

Bartoli

et al. 2012

Open Geosciences

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Melt inclusions (MI) trapped in igneous phenocrysts provide one of the best tools available for characterizing magmatic processes. Some MI experience post-entrapment modifications, including crystallization of material on the walls, formation of a vapor bubble containing volatiles originally dissolved in the melt, or partial to complete crystallization of the melt. In these cases, laboratory heating may be necessary to return the MI to its original homogeneous melt state, followed by rapid quenching of the melt to produce a homogeneous glass phase, before microanalyses can be undertaken.Here we describe a series of heating experiments that have been performed on crystallized MI hosted in olivine, clinopyroxene and quartz phenocrysts, using the Linkam TS1400XY microscope heating stage. During the experiments, we have recorded the melting behaviors of the MI up to a maximum temperature of 1360 • C. In most of the experiments, the MI were homogenized completely (without crystals or bubbles) and remained homogeneous during quenching to room temperature. The resulting single phase MI contained a homogeneous glass phase. These tests demonstrate the applicability of the Linkam TS1400XY microscope heating stage to homogenize and quench MI to produce homogeneous glasses that can be analyzed with various techniques such as Electron Microprobe (EMP), Secondary Ion Mass Spectrometry (SIMS), Laser ablation Inductively Coupled Plasma Mass Spectrometry (LA ICP-MS), Raman spectroscopy, FTIR spectroscopy, etc. During heating experiments, the optical quality varied greatly between samples and was a function of not only the temperature of observation, but also on the amount of matrix glass attached to the phenocryst, the presence of other MI in the sample which are connected to the outside of the crystal, and the existence of mineral inclusions in the host.

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“…Type I consists of mica, Fe-Ti-oxide minerals and/or dark green spinel, clinopyroxene, feldspar and a vapor bubble. No volatiles (CO 2 , H 2 O) were detected in the bubbles by Raman spectroscopy [28]. Type II inclusions are generally lighter in color when observed in transmitted light and contain subhedral feldspar and/or glass and several black (opaque?)…”

Section: Melt Inclusionsmentioning

confidence: 96%

Composition and origin of nodules from the ≈20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma — Vesuvius, Italy

Klébesz¹,

Bodnar

Vivo

et al. 2012

Open Geosciences

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Nodules (coarse-grain "plutonic" rocks) were collected from the ca. 20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma-Vesuvius, Italy. The nodules are classified as monzonite-monzogabbro based on their modal composition. The nodules have porphyrogranular texture, and consist of An-rich plagioclase, K-feldspar, clinopyroxene (ferroan-diopside), mica (phlogopite-biotite) ± olivine and amphibole. Aggregates of irregular intergrowths of mostly alkali feldspar and plagioclase, along with mica, Fe-Ti-oxides and clinopyroxene, in the nodules are interpreted as crystallized melt pockets. Crystallized silicate melt inclusions (MI) are common in the nodules, especially in clinopyroxenes. Two types of MI have been identified. Type I consists of mica, Fe-Ti-oxides and/or dark green spinel, clinopyroxene, feldspar and a vapor bubble. Volatiles (CO 2 , H 2 O) could not be detected in the vapor bubbles by Raman spectroscopy. Type II inclusions are generally lighter in color and contain subhedral feldspar and/or glass and several opaque phases, most of which are confirmed to be oxide minerals by SEM analysis. Some of the opaque-appearing phases that are below the surface may be tiny vapor bubbles. The two types of MI have different chemical compositions. Type I MI are classified as phono-tephrite -tephri-phonolite -basaltic trachy-andesite, while Type II MI have basaltic composition. The petrography and MI geochemistry led us to conclude that the nodules represent samples of the crystal mush zone in the active plumbing system of Mt. Somma-Vesuvius that were entrained into the upwelling magma during the PB-Sarno eruption.

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Volatile Evolution of Magma Associated with the Solchiaro Eruption in the Phlegrean Volcanic District (Italy)

Cited by 73 publications

References 67 publications

Bubbles matter: An assessment of the contribution of vapor bubbles to melt inclusion volatile budgets

Bubbles matter: An assessment of the contribution of vapor bubbles to melt inclusion volatile budgets

Application of the Linkam TS1400XY heating stage to melt inclusion studies

Composition and origin of nodules from the ≈20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma — Vesuvius, Italy

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