Conditions of Magma Storage, Degassing and Ascent at Stromboli: New Insights into the Volcano Plumbing System with Inferences on the Eruptive Dynamics
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400 citations
Cites background from "Conditions of Magma Storage, Degass..."
...…Portnyagin et al., 2007; Johnson et al., 2009; Ruscitto et al., 2010), cross-arc water variations (Walker et al., 2003) the ascent of arc magmas (Blundy and Cashman, 2005), their differentiation (Zimmer et al., 2010) and eruption (Blundy et al., 2006; Metrich et al., 2010; Spilliaert et al., 2006)....
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148 citations
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Cites background or methods or result from "Conditions of Magma Storage, Degass..."
...In the attempt to provide a comprehensivemodel of degassing, we integrate here our volcanic gas observations with recent determinations of volatile contents in melt inclusions (Métrich et al., 2010); and we compare the natural (volcanic gas and MI) data with results from the Moretti and Papale (2004) equilibrium saturation model, which we use to numerically reproduce the degassing trends of Stromboli's magmas upon their ascent and decompression....
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...Our focus is on the routine Strombolian activity, making our study complementary to recent work (Métrich et al., 2010; Allard, 2010) on the genetic mechanisms of the Stromboli's large scale explosions....
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...In spite of this existing knowledge, the structure of the deep and shallow plumbing system is still a matter of debate (Métrich et al., 2010; Pichavant et al., 2009), and information of volcanic gas compositions is still fragmentary, particularly for H2O....
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...%) content is consistent with melt inclusion evidences (Métrich et al., 2010); the run at 20% CO2 content should only be viewed as an endmember composition calculation (and not an authentic representation of the natural case)....
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...7a) indicate entrapment pressures of ∼50–100 MPa pressure (Métrich et al., 2010), confirming that a change from closed- to open-system degassing regime (with the consequent water depletion being the trigger for transition from LP to HP magma) occurs in the 2–4 km bsv depth range....
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References
2,614 citations
"Conditions of Magma Storage, Degass..." refers methods in this paper
...…from https://academic.oup.com/petrology/article-abstract/51/3/603/1531471/Conditions-of-Magma-Storage-Degassing-and-Ascent by guest on 16 September 2017 the magma crystallization paths using the Adiabat thermodynamic model (Ghiorso & Sack, 1995; Asimow & Ghiorso, 1998; Smith & Asimow, 2005)....
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690 citations
"Conditions of Magma Storage, Degass..." refers background in this paper
...…degassing or outgassing have been associated with low-intensity strombolian activity because of differential transfer of coalescing gas bubbles (e.g.Wilson & Head,1981) or bubble accumulation, foam collapse and gas pocket (slug) migration upwards in the conduits (e.g. Jaupart & Vergniolle, 1988)....
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689 citations
"Conditions of Magma Storage, Degass..." refers methods in this paper
...For the shoshonitic melt hosted in Fo69·5 (ST182-11; Table 1) the measured K Fe D Ol Liq value (0·302) matches well that predicted (0·294) by the model of Toplis (2005), for an fO2 buffered at FMQ and a temperature of 11208C....
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...…from https://academic.oup.com/petrology/article-abstract/51/3/603/1531471/Conditions-of-Magma-Storage-Degassing-and-Ascent by guest on 16 September 2017 the magma crystallization paths using the Adiabat thermodynamic model (Ghiorso & Sack, 1995; Asimow & Ghiorso, 1998; Smith & Asimow, 2005)....
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491 citations
"Conditions of Magma Storage, Degass..." refers methods or result in this paper
...Thus the saturation pressures calculated using the solubility model of Papale et al. (2006) must be considered with caution, all the more so because the computed CO2 solubility is highly sensitive to the redox state....
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...The pressures calculated using the Papale et al. (2006) model confirm the presence of a magma ponding zone extending vertically from 7 to 10 km, in accordance with previous findings (Bertagnini et al., 2003) and available experimental petrology (Di Carlo et al., 2006)....
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...The minimum melt saturation pressure (PCO2þPH2O) and gas phase composition (XCO2, XH2O) were derived from the dissolved amounts of H2O and CO2 measured in melt inclusions, using the H2O^CO2 solubility model of Papale (1999), updated by Papale et al. (2006)....
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...We have computed the pressure-related evolution of H2O and CO2 in a basaltic melt under closed-system ascent and decompression (CSAD) conditions, using Papale’s updated model (Papale et al., 2006)....
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442 citations
"Conditions of Magma Storage, Degass..." refers methods in this paper
...…from https://academic.oup.com/petrology/article-abstract/51/3/603/1531471/Conditions-of-Magma-Storage-Degassing-and-Ascent by guest on 16 September 2017 the magma crystallization paths using the Adiabat thermodynamic model (Ghiorso & Sack, 1995; Asimow & Ghiorso, 1998; Smith & Asimow, 2005)....
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