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JOURNAL OF PETROLOGY VOLUME 40 NUMBER 2 PAGES 297313 1999 Calculation of Peridotite Partial Melting from
 

Summary: JOURNAL OF PETROLOGY VOLUME 40 NUMBER 2 PAGES 297313 1999
Calculation of Peridotite Partial Melting from
Thermodynamic Models of Minerals and
Melts. II. Isobaric Variations in Melts near
the Solidus and owing to Variable Source
Composition
M. M. HIRSCHMANN1
, M. S. GHIORSO2
AND E. M. STOLPER3
1
DEPARTMENT OF GEOLOGY AND GEOPHYSICS, UNIVERSITY OF MINNESOTA, 310 PILLSBURY DRIVE S.E., MINNEAPOLIS,
MN 55455-0219, USA
2
DEPARTMENT OF GEOLOGICAL SCIENCES, AJ-20, UNIVERSITY OF WASHINGTON, SEATTLE, WA 98195, USA
3
DIVISION OF GEOLOGICAL AND PLANETARY SCIENCES, 170-25, CALTECH, PASADENA, CA 91125, USA
RECEIVED FEBRUARY 5, 1998; REVISED TYPESCRIPT ACCEPTED JUNE 26, 1998
We examine several issues related to peridotite partial melting by composition (Na2O decreases, CaO/Al2O3 increases) are similar to
the effects of increasing total extent of melting of a fixed sourceperforming thermodynamic calculations using the MELTS algorithm.
composition, and the two phenomena may therefore be difficult toMELTS calculations suggest that the high alkali content of near-

  

Source: Asimow, Paul D. - Division of Geological and Planetary Sciences, California Institute of Technology,

 

Collections: Geosciences