Diffusion of noble gases in melts of the system SiO2NaAlSi2O6

Roselieb, Knut; Rammensee, W.; Büttner, Heinz; Rosenhauer, M.

doi:10.1016/0009-2541(94)00117-q

Cited by 33 publications

(20 citation statements)

References 23 publications

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“…A more comprehensive comparison between noble gas diffusion and sulfur diffusion is possible for melts with albitic compositions since the whole range of noble gases from He to Xe has been studied (Shelby and Eagan 1976;Roselieb et al 1992Roselieb et al , 1995Carroll 1991;Carroll et al 1993;Spickenbom et al 2010). A clear trend of decreasing diffusivity with increasing size of the noble gases has been established, but diffusion of all of these elements is much faster than sulfur diffusion measured by Winther et al (1998).…”

Section: Comparison To Diffusion Of Other Volatilesmentioning

confidence: 94%

Diffusion and Redox Reactions of Sulfur in Silicate Melts

Behrens

Stelling

2011

Reviews in Mineralogy and Geochemistry

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Section: Comparison To Diffusion Of Other Volatilesmentioning

confidence: 94%

Diffusion and Redox Reactions of Sulfur in Silicate Melts

Behrens

Stelling

2011

Reviews in Mineralogy and Geochemistry

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“…Among minor volatile components, diffusion of Ar has been investigated most extensively [ Reynolds , 1957; Perkins and Begeal , 1971; Lux , 1987; Matsuda et al , 1989; Carroll , 1991; Carroll and Stolper , 1991; Roselieb et al , 1992, 1995, 1996; Draper and Carroll , 1995; Behrens and Zhang , 2001; Nowak et al , 2004]. In fact, Ar diffusion is investigated more extensively than diffusion of CO 2 or S and on par with that of H 2 O.…”

Section: Diffusivity Of Volatiles In Silicate Meltsmentioning

confidence: 99%

“…Ar diffusion in anhydrous silica melt has been investigated by Perkins and Begeal [1971], Carroll and Stolper [1991], Draper and Carroll [1995], and Roselieb et al [1995], with 73 data points covering 673–1178 K and 0.1–372 MPa (Figure 18). Because the diffusivity is well constrained at 0.1 MPa and less well constrained at higher pressures, we first fit the data at 0.1 MPa using the Arrhenius equation and then plot Δln D = ln D exp − ln D 0.1 MPa,calc versus pressure to determine the pressure dependence.…”

Section: Diffusivity Of Volatiles In Silicate Meltsmentioning

confidence: 99%

Silicate melt properties and volcanic eruptions

Zhang

Zhu

et al. 2007

Reviews of Geophysics

193

125

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[1] Knowledge about the properties of silicate melts is needed by volcanologists and petrologists to evaluate the dynamics of volcanic eruptions and magmatic processes. These properties include the solubility and diffusivity of volatile components in silicate melts, silicate melt viscosity, and the fragmentation condition. Data and models of each property are reviewed and assessed. For rhyolitic melts many properties are sufficiently well known to allow realistic modeling of volcanic and magmatic processes. One interesting example is the role of speciation in the solubility and diffusivity of H 2 O and CO 2 . Even though both H 2 O and CO 2 are present in silicate melts as at least two species, the complexity in the solubility and diffusion behavior of H 2 O and the simplicity of CO 2 are due to differences in the speciation reaction: For the H 2 O component the stoichiometric coefficient is one for one hydrous species (molecular H 2 O) but is two for the other hydrous species (OH) in the species interconversion reaction, whereas for CO 2 the stoichiometric coefficients for all carbon species are one. The investigation of the species reaction not only helps in understanding the solubility and diffusion behavior, but the reaction among the hydrous species also serves as a geospeedometer (cooling rate indicator) for hydrous rhyolitic pyroclasts and glass and provides a method to infer viscosity. For melts other than rhyolite, a preliminary description of their properties is also available, but much more experimental and modeling work is necessary to quantify these properties more accurately.

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“…Argon solubility and mobility in silicate melts play a fundamental role in understanding the degassing history of the Earth driven by magmatic transport from the mantle to the surface and subsequent degassing. The main focus of laboratory studies has been the investigation of Ar diffusion in fully polymerised silicate melts (Carroll, 1991;Carroll and Stolper, 1991;Roselieb et al, 1992Roselieb et al, , 1995Behrens and Zhang, 2001). A knowledge of transport properties of Ar in depolymerised melts is necessary for understanding the transport of complex volatile species, such as CO 2 , which may also diffuse as neutral molecules .…”

Section: Introductionmentioning

confidence: 99%