搜索结果: 1-11 共查到“凹凸棒石 mantle”相关记录11条 . 查询时间(0.022 秒)
Subsolidus and melting experiments of a K-rich basaltic composition to 27 GPa: Implication for the behavior of potassium in the mantle
K-rich basaltic composition 27GPa Subsolidus and melting experiments
2012/3/30
SubsolidusandmeltingexperimentsofaK-richbasalticcompositionhavebeenper-
2wt%)at6¤C12.5GPaandabove22.5GPa,respectively.Bothpyroxeneandgarnetma
actasmainreservoirsforKinthemantle.Sanidine(KAlSi
O )or...
Estimates of mantle relevant Clapeyron slopes in the MgSiO3 system from high-pressure spectroscopic data
MgSiO3 high-pressure spectroscopic data
2012/3/30
ThephasediagramforMgSiO wasestimatedusingtheentropy,enthalpy,thermalex-3
pansivity,andvolumesofallthephases.Entropyatthevarious P-T conditionsinthephase
diagramwasestimatedusingstatisticalthermodyna...
Molecular dynamics simulations of phase transitions and melting in perovskite MgSiO3 at mantle pressures
Molecular dynamics simulations phase transitions MgSiO3
2012/4/1
The high pressure phase transitions and melting of the mantle mineral MgSiO3 with the perovskite structure were investigated using molecular dynamics (MD) simulations of a large system of atoms on a p...
Crystal structure of a new spinelloid with the wadsleyite structure in the system Fe2SiO4-Fe3O4 and implications for the Earth's mantle
Crystal structure spinelloid wadsleyite structure Fe2SiO4-Fe3O4
2012/3/31
A new spinelloid polytype with a composition Fe2.45Si0.55O4 has been synthesized at 1100 8C and 5.6 GPa that is isostructural with wadsleyite [b2(Mg,Fe)2SiO4
]. The refined param-eters (space group I...
Reaction between magnesiowüstite of lower mantle composition and core-forming Fe-Ni alloy at 1-40 Gpa
Reaction magnesiowüstite lower mantle composition core-forming Fe-Ni alloy 1-40 Gpa
2012/4/5
OneclassofmodelsfortheearlyhistoryoftheEarthrequiresthepresent-dayinventory
ofsiderophileelementsinthemantletohavebeenestablishedbyequilibriumpartitioning
betweencore-formingmetalandmantlemineralsat...
Crystal chemistry of superfluorous phase B (Mg10Si3O14F4): Implications for the role of fluorine in the mantle
Crystal chemistry superfluorous phase B(Mg10Si3O14F4) Implications role mantle
2012/4/5
Single-crystalX-raydiffractiondatahavebeenobtainedforcrystalsoftheFanalogof
superhydrousphaseB,MgSi O F .Twinnedcrystalsweresynthesizedusingasplit-
sphereanvilapparatus(USSA-2000)atpressuresbetween1...
Elastic properties of orthorhombic MgSiO3 perovskite at lower mantle pressures
Elastic properties orthorhombic MgSiO3 perovskite lower mantle pressures
2012/4/5
ThefullelasticconstanttensoroforthorhombicMgSiO perovskitehasbeendetermined
from?rstprinciplesforthe?rsttimeathighpressureusingtheplane-wavepseudopotential
method.Theathermalelasticmoduli,determined...
The solubility of H2O in nominally anhydrous mantle minerals using 1H MAS NMR
H2O anhydrous mantle minerals 1H MAS NMR
2012/4/9
The dissolved H20 concentrations of experimentally produced, Fe-free, nominally an-hydrous minerals (NAMs) have been measured using, for the first time, IH magic-angle-spinning NMR spectroscopy. Atlea...
Prediction of phase transition in CaSiO3 perovskite and implications for lower mantle structure
Prediction phase transition CaSiO3 perovskite implications mantle structure
2012/4/6
First-principleslinear-response calculations wereusedto investigate the lattice dynamics ofwhatis thought to be the third mostabundant phase in the lower mantle,CaSi03 perovskite.Thecommonly assumed c...
Magma transport and metasomatism in the mantle: A critical review of current geochemical models---Reply to Navon et al.
Magma transport metasomatism mantle:current geochemical models
2012/4/6
Navon et al. (1996) demonstrated that the Navon and Stolper (1987) model can be formulated to reproduce a pattern oflight-ion lithophile trace element (LIL) enrichments produced by a single, small-sca...
Magma transport and metasomatism in the mantle: A critical review of current geochemical models---Discussion
Magma transport metasomatism mantle critical review current geochemical models---Discussion
2012/4/6
Nielson and Wilshire (1993) promised a review of geochemically based models for magma transport and metasomatism in the mantle. However, they focused ondiscrediting the chromatographic modelofNavon an...
