Mathematics – Logic
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992geokh.......13k&link_type=abstract
Geokhimiia (ISSN 0016-7525), Jan. 1992, p. 13-19. In Russian.
Mathematics
Logic
Elastic Properties, Lunar Mantle, Olivine, Pyroxenes, Thermodynamic Properties, Elastic Waves, Seismology, Silicon Oxides
Scientific paper
A thermodynamic approach, based on the FeO-MgO-SiO2 fundamental system, is developed for the construction of petrological-geophysical models of the lunar mantle. Thermodynamic profiles of the elastic wave velocities are compared with seismic data, and preliminary constraints are identified for the contents of rock-forming oxides in the lunar matter. It is found that at least three factors affect the physical properties of lunar interior: temperature, concentration of SiO, and the Fe/(Fe + Mg) ratio. Calculations show that neither the olivine-pyroxene model depleted in iron nor the models enriched in silica can simultaneously satisfy the seismic constraints in both the upper and the middle lunar mantle, indicating that the lunar mantle is stratified with regard to chemical composition.
Ibodinova G. V.
Kuskov Oleg L.
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