Implications for mantle dynamics from the high melting temperature of perovskite

Details Implications for mantle dynamics from the high melting temperature of perovskite Implications for mantle dynamics from the high melting temperature of perovskite

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sci...264.1437v&link_type=abstract

Science (ISSN 0036-8075), vol. 264, no. 5164, p. 1437-1439

Mathematics

28

Convective Heat Transfer, Earth Mantle, Geodynamics, Geoids, Geology, High Temperature, Melting, Perovskites, Temperature Effects, Topography, Creep Properties, Ductility, Estimating, Heating, Linearization, Mathematical Models, Rayleigh Number, Viscosity

Scientific paper

Recent studies have implied that (Mg,Fe)SiO3-perovshite, a likely dominant mineral phase in the lower mantle, may have a high melting temperature. The implications of these findings for the dynamics of the lower mantle were investigated with the use of numerical convection models. The results showed that low homologous temperatures (0.3 to 0.5) would prevail in the modeled lower mantle, regardless of the effective Rayleigh number and internal heating rates. High-temperature ductile creep is possible under relatively cold conditions. In models with low rates of internal heating, local maxima of viscosity developed in the mid-lower mantle that were similar to those obtained from inversion of geoid, topography, and plate velocities.

Affiliated with

Also associated with

No associations

Rating

Implications for mantle dynamics from the high melting temperature of perovskite does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Implications for mantle dynamics from the high melting temperature of perovskite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implications for mantle dynamics from the high melting temperature of perovskite will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1508383