Taking the temperature of slabs
Article Abstract:
Recent research has produced new information about the effects of variable thermal structure on the stability of slab minerals. It has been shown that the serpentinite minerals brucite and antigorite are thermodynamically stable in the forearc mantle, with both showing stable-sliding behaviour in the laboratory. In further research, investigation of the differences in behaviour between warm and cold slabs was extended to deeper phenomena. Models of warm subduction offer a thermophysical structure for future research into the seismic element of deformation rates inside warm slabs.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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Taking the core temperature
Article Abstract:
It has been possible to apply new developments in computational physics to devise a virtual thermometer that may produce more accurate estimates of the temperature of the Earth's core. This research involved using an ab initio molecular dynamics method, linked with an innovative 'thermodynamic integration' scheme, to calculate the free energies of solid and liquid iron as functions of pressure and temperature. It was possible to obtain a melting curve that is as accurate as existing experimental data.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Tracking slabs in the low mantle
Article Abstract:
Geochemistry experts are wrong to dismiss recent seismic imaging evidence of mass transfer between lower and upper mantles in the Earth's interior. The images contributed by scientists R.D. van der Hilst et al. prove slab penetration reaches the lower mantle. Geochemistry evidence suggests the Earth's mantle is partly segregated.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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