Zobrazeno 1 - 10
of 27
pro vyhledávání: '"S. E. Kesson"'
Publikováno v:
American Mineralogist. 88:860-865
Temperature-dependent cation order-disorder has been studied in many 2+ - 3+ oxide spinels but 4+ - 2+ spinels have been found to be either completely normal or completely inverse when examined at room temperature. Here we report the temperature depe
Publikováno v:
Physics of the Earth and Planetary Interiors. 131:295-310
The disproportionation products of olivine Fo 90 in diamond–anvil cell experiments at about 1 Mbar are magnesian silicate perovskite Mg# ∼94 and a series of magnesiowustites Mg# 85–90, yielding a recommended value of 0.4±0.1 for the distributi
Autor:
S. E. Kesson, D. H. Lindsley
Publikováno v:
1977, Reviews of Lunar Sciences ISBN: 9781118782118
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b0e4880f7168e6d164acd36d45d500c
https://doi.org/10.1002/9781118782118.ch13
https://doi.org/10.1002/9781118782118.ch13
Publikováno v:
Nature. 393:252-255
There is a growing consensus that the Earth's lower mantle possesses a bulk composition broadly similar to that of the upper mantle (known as pyrolite)1,2,3. But little is known about lower-mantle mineralogy and phase chemistry4,5, especially at dept
Publikováno v:
Physics of the Earth and Planetary Interiors. 102:223-229
A new calcium aluminosilicate phase of composition CaAl4Si2O11 has been encountered amongst the transformation products of CaAl2Si2O8 (anorthite composition) at 14 GPa (Gautron et al., 1996). X-ray diffraction (XRD) confirms that its crystal structur
Reaction between magnesiowusite of lower mantle composition and core-forming Fe-Ni alloy at 1-40 GPa
Publikováno v:
American Mineralogist. 82:526-533
One class of models for the early history of the Earth requires the present-day inventory of siderophile elements in the mantle to have been established by equilibrium partitioning between core-forming metal and mantle minerals at high pressures and
Publikováno v:
Physics of the Earth and Planetary Interiors. 97:71-81
Multi-anvil experiments at 14 GPa and 1500°C reveal that CaAl 2 Si 2 O 8 (anorthite composition) undergoes subsolidus disproportionation into grossular Ca 3 Al 2 Si 3 O 12 , stishovite SiO 2 and a calcium aluminosilicate phase of composition CaAl 4
Publikováno v:
Earth and Planetary Science Letters. 134:187-201
Solid solution of ∼ 25 mole% Al2O3 expands the compositional stability field of Mg,Fe silicate perovskite well beyond the limits encountered in the simple ternary system MgOFeOSiO2. Aluminous perovskites synthesised in laser-heated diamond anvil ce
Publikováno v:
Earth and Planetary Science Letters. 113:521-538
Rare earth fractionation in kimberlites implies that they were produced by partial melting in the presence of residual garnet, in accordance with the widely held belief that kimberlites were formed by small degrees of partial melting of a garnet lher
Autor:
J. D. Fitz Gerald, S. E. Kesson
Publikováno v:
Earth and Planetary Science Letters. 111:229-240
Syngenetic mineral inclusions in diamond provide valuable information about the environment in which the diamond originally crystallized. It was earlier proposed that diamonds containing a “forbidden” inclusion assemblage of magnesiowustite (Mg n