Abstract
Compressional-wave velocities of fayalite, Fe2SiO4 spinel, α quartz, and coesite were determined by the pulse-transmission method at pressures to 6 kb and room temperature. The compressional-wave velocity at 4 kb of polycrystalline fayalite, Fe2SiO4 olivine, has been found to be 6.7±0.1 km/see, whereas that of polycrystalline Fe2SiO4 spinel is 8.0±0.1 km/sec. The velocity jump at the olivine-spinel transition is 19%, whereas the density jump is 10%. The compressional-wave velocity of (Mg, Fe) 2SiO4 olivine has been found to vary linearly with the FeO/(FeO + MgO) ratio of the samples. The compressional-wave velocity of the spinel polymorph of Mg2SiO4 is estimated to be 10.3 km/sec. The compressional-wave velocities at 4 kb of polycrystalline α quartz and coesite have been found to be 6.2 ±0.1 km/sec and 7.6±0.1 km/sec, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.