Elastic properties of diopside, anorthite, and grossular glasses and liquids: A Brillouin scattering study up to 1400 K

Journal Article · Sun Oct 10 04:00:00 EDT 1993 · Journal of Geophysical Research

DOI:https://doi.org/10.1029/93JB01558· OSTI ID:67987

Askarpour, V; Manghnani, M H ^[1]

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1. Univ. of Hawaii, Honolulu, HI (United States)

The compressional V{sub p} and shear V{sub s} wave velocities of diopside (CaMgSi{sub 2}O{sub 6}), anorthite (CaAl{sub 2}Si{sub 2}O{sub 8}), and grossular (Ca{sub 3}Al{sub 2}Si{sub 3}O{sub 12}) glasses and liquids have been measured by high-resolution Brillouin spectroscopy up to 1200 or 1400 K. For all three materials, marked breaks in the wave velocity-temperature relationships are observed at temperatures consistent with the glass transition temperatures observed in viscosity and calorimetry experiments. From comparisons between high-temperature ultrasonic (relaxed V{sub p}) data and extrapolated Brillouin (unrelaxed V{sub p} and V{sub s}) values, the configurational compressibility of diopside and anorthite liquids has been determined. The relative importance of vibrational and configurational contributions can be markedly different for the compressibility and heat capacity of silicate melts. 21 refs., 6 figs., 5 tabs.

• Sponsoring Organization: USDOE
• DOE Contract Number: FG03-85ER13418
• OSTI ID: 67987
• Journal Information: Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: B10 Vol. 98; ISSN JGREA2; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANORTHITE
DIOPSIDE
ELASTICITY
MAGMA
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THERMODYNAMIC PROPERTIES