The interpretation of seismological models for the Earth's lower mantle in terms of chemical composition and temperature is sensitive both to the details of the methodology employed and also to uncertainties in key thermoelastic parameters, especially for the dominant (Mg, Fe)SiO 3 perovskite phase....
The lower mantle constitutes more than half the Earth's interior by volume, and is believed to consist predominantly of (Mg,Fe)SiO3 perovskite with up to a... C Mccammon 被引量: 359发表: 1997年 Elasticity of (Mg,Fe)O through the spin transition of iron in the lower mantle Recently,...
Earth mantleequations of stategeochemistrymineralsshear modulusterrestrial heat/ lower mantle reference temperaturelower mantle compositionlower mantle geotherm1D seismic modelsWe aim to constrain the lower mantle geotherm and average composition from 1D seismic models and experimental mineralogy data, explicitly...
MAGNESIUM-rich silicate perovskite is thought to be the dominant mineral phase in the Earth's lower mantle. The behaviour of MgSiO 3 perovskite at high te... M Matsui,GD Price - 《Nature》 被引量: 117发表: 1991年 Stability of orthorhombic MgSiO3 perovskite in the Earth's lower mantle MA...
Rare earth elements in garnet and zircon Trace elements, along with a number of major elements, were analyzed in garnet simultaneously with the U–Pb isotopes. Accordingly, this yielded 50–60 analyses for each sample randomly distributed over multiple garnet grains. The full set of trace elements...
Thermoelasticity of silicate perovskites and magnesiowüstite and its implications for the Earth’s lower mantle Thermodynamic functions at zero pressure and their relation to equations of state of minerals Accuracy of equation-of-state formulations Extrapolation of lower mantle properties to zero press...
The δ18O-δD relation shows that the main source is the meteoric water, together with some sedimentary water, but there are no deep magmatic water and mantle water which recharge the geothermal water in the basin. Through examining the distribution pattern of hydrogen-oxygen isotopic signatures,...
Physics of the Earth & Planetary InteriorsLi, B., and J. Zhang, (2005), Pressure and temperature dependence of elastic wave velocity of MgSiO3 perovskite and the composition of the lower mantle, Phys. Earth Planet. Inter., 151, 143-154, doi:10.1016/j.pepi.2005.02.004....
adiabatic temperaturecore‐mantle boundary heat flowironlower mantleouter corethermal structuredoi:10.1002/9781118992487.ch2Taku TsuchiyaGeodynamics Research Center, Ehime University, Matsuyama, Ehime Prefecture, Japan Earth‐Life Science Institute, Tokyo Institute of Technology, Meguro, Tokyo, JapanKenji Kawai...
The CMB heat flow, which is determined by the temperature gradient and conductivity in the thermal boundary layer (TBL), controls the deep Earth dynamics, such as the lower mantle basal heating, core cooling, and dynamo activity. Analyses of the temperature profiles in the LM and OC indicate ...