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Halogen diffusion in magmatic systems: Our current state of knowledge
Author(s)
Language
English
Obiettivo Specifico
2.3. TTC - Laboratori di chimica e fisica delle rocce
Status
In press
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Publisher
Elsevier
Issued date
2008
Abstract
Diffusion of halogens has the potential to influence petrogenetic processes in magma chambers and conduit
degassing processes. This contribution reviews our current state of knowledge concerning halogen diffusion
and the influence of halogens on the diffusion of major elements in silicate melts. The addition of halogens to
silicate melts at common, natural concentration levels will have little
effect on the diffusion of major
elements. However, the differences between the diffusivity of water, the diffusivities of halogens, and the
diffusivity of sulfur are significant enough that during melt inclusion entrapment, or during rapid bubble or
crystal growth, diffusive fractionation betweenwater and the halogens, and between halogens and sulfur, are
expected to occur and can influence the compositions of melt inclusions, crystals and volcanic gases.
degassing processes. This contribution reviews our current state of knowledge concerning halogen diffusion
and the influence of halogens on the diffusion of major elements in silicate melts. The addition of halogens to
silicate melts at common, natural concentration levels will have little
effect on the diffusion of major
elements. However, the differences between the diffusivity of water, the diffusivities of halogens, and the
diffusivity of sulfur are significant enough that during melt inclusion entrapment, or during rapid bubble or
crystal growth, diffusive fractionation betweenwater and the halogens, and between halogens and sulfur, are
expected to occur and can influence the compositions of melt inclusions, crystals and volcanic gases.
Sponsors
NSERC Discovery grant to D.R.B
Type
article
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BakerBalconeHalogenDiffusionPageProofsCHEMGE_15541.pdf
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Format
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