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THEORETICAL PREDICTION OF PHASE-RELATIONSHIPS IN PLANETARY MANTLES

Abstract:

Calorimetric and phase equilibrium data were used to establish an internally consistent thermodynamic database for the Si-undersaturated part of the system Na2O-FeOnCaO-MgO-Al2O3-SiO2. This database has been used to calculate the stability fields of assemblages involving olivine, orthopyroxene, clinopyroxene, spinel, plagioclase, and garnet at high P and T. In the six-component system CaO-MgO-Al2O3-SiO2 the stable assemblages are ol-opx-cpx-plag at P < 8 kbar at 1300oC and <6 kbar at 90...

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Publication status:
Published

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Publisher copy:
10.1029/JB087iS01p00A19

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Journal:
JOURNAL OF GEOPHYSICAL RESEARCH
Volume:
87
Issue:
Supplement
Pages:
A19-A30
Publication date:
1982-01-01
DOI:
ISSN:
0148-0227
Source identifiers:
174993
Language:
English
Pubs id:
pubs:174993
UUID:
uuid:d11369a9-a778-4fa4-8906-d2db91614d61
Local pid:
pubs:174993
Deposit date:
2012-12-19

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