The effect of CO2 on the viscosity of silicate liquids at high pressure

Details The effect of CO2 on the viscosity of silicate liquids at high pressure The effect of CO2 on the viscosity of silicate liquids at high pressure

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.2609b&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 53, Oct. 1989, p. 2609-2616.

Physics

6

Carbon Dioxide, Dissolved Gases, Magma, Sodium Silicates, Viscous Fluids, High Pressure, Liquid-Gas Mixtures, Pressure Effects, Solubility, Viscosity

Scientific paper

The falling-sphere method is used to study the effect of carbon dioxide on the viscosity of silicate liquids at high pressure and temperature. It is found that CO2 reduces the viscosity of NaAlSi3O8 liquid at high pressure by a factor of two. This is believed to be the result of the depolymerization of the liquid on solution of CO2. It is suggested that CO2 will have a minor influence, compared to H2O and F, on the modification of the physical properties of silicic magmas.

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