Prediction of silicate melt viscosity from electrical conductivity: A model and its geophysical implications

Anne Pommier, Rob L. Evans, Kerry Key, James Tyburczy, Stephen Mackwell, Jimmy Elsenbeck

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Our knowledge of magma dynamics would be improved if geophysical data could be used to infer rheological constraints in melt-bearing zones. Geophysical images of the Earth's interior provide frozen snapshots of a dynamical system. However, knowledge of a rheological parameter such as viscosity would constrain the time-dependent dynamics of melt bearing zones. We propose a model that relates melt viscosity to electrical conductivity for naturally occurring melt compositions (including H2O) and temperature. Based on laboratory measurements of melt conductivity and viscosity, our model provides a rheological dimension to the interpretation of electromagnetic anomalies caused by melt and partially molten rocks (melt fraction ∼ >0.7).

Original languageEnglish (US)
Pages (from-to)1685-1692
Number of pages8
JournalGeochemistry, Geophysics, Geosystems
Volume14
Issue number6
DOIs
StatePublished - 2013

Fingerprint

Silicates
silicate melt
Bearings (structural)
electrical conductivity
silicates
viscosity
melt
Viscosity
electrical resistivity
prediction
predictions
dynamical systems
magma
Molten materials
Dynamical systems
Earth (planet)
Rocks
rocks
anomalies
electromagnetism

Keywords

  • electrical conductivity
  • magma mixing
  • magnetotellurics
  • silicate melts
  • viscosity

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Prediction of silicate melt viscosity from electrical conductivity : A model and its geophysical implications. / Pommier, Anne; Evans, Rob L.; Key, Kerry; Tyburczy, James; Mackwell, Stephen; Elsenbeck, Jimmy.

In: Geochemistry, Geophysics, Geosystems, Vol. 14, No. 6, 2013, p. 1685-1692.

Research output: Contribution to journalArticle

Pommier, Anne ; Evans, Rob L. ; Key, Kerry ; Tyburczy, James ; Mackwell, Stephen ; Elsenbeck, Jimmy. / Prediction of silicate melt viscosity from electrical conductivity : A model and its geophysical implications. In: Geochemistry, Geophysics, Geosystems. 2013 ; Vol. 14, No. 6. pp. 1685-1692.
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