Journal ArticleDOI
The transition between spinel lherzolite and garnet lherzolite, and its use as a Geobarometer
TLDR
In this paper, the equilibrium between spinel lherzolite and garnet lhersolite has been experimentally determined in the CaO-MgO-Al2O3-SiO2 system between 800° and 1,100° C.Abstract:
The equilibrium between spinel lherzolite and garnet lherzolite has been experimentally determined in the CaO-MgO-Al2O3-SiO2 system between 800° and 1,100° C. In confirmation of earlier work and predictions from thermodynamic data, it was found that theP-T slope of the reaction was close to zero, the equilibrium ranging from 16.1 kb at 800° C to 18.7 kb at 1,100° C (±0.3 kb).read more
Citations
More filters
Journal ArticleDOI
Characterization of spinel peridotites by olivine-spinel compositional relationships: Review and interpretation
TL;DR: A comprehensive review on igneous petrological characteristics of mantle-derived spinel peridotites was made on the basis of their olivine-spinel compositional relationships as discussed by the authors.
Journal ArticleDOI
Re-Os evidence for replacement of ancient mantle lithosphere beneath the North China Craton
TL;DR: In this paper, peridotite xenoliths carried in Paleozoic kimberlites and Tertiary alkali basalts confirm previous suggestions that the refractory and chemically buoyant lithospheric keel present beneath the eastern block of the North China craton is indeed Archean in age.
Journal ArticleDOI
A possible role for garnet pyroxenite in the origin of the “garnet signature” in MORB
TL;DR: In this article, it was shown that a significant fraction of the melting in MORB source regions takes place in the garnet peridotite field, an inference that places the onset of melting at ≥ 80 km.
Book
Principles of igneous and metamorphic petrology
Anthony R. Philpotts,Jay J. Ague +1 more
TL;DR: The authors provides a basic understanding of the formative processes of igneous and metamorphic rock through quantitative applications of simple physical and chemical principles, and encourages a deeper comprehension of the subject by explaining the petrologic principles.
Principles of Igneous and Metamorphic Petrology
Anthony R. Philpotts,Jay J. Ague +1 more
TL;DR: The second edition of the Petrology Textbook as mentioned in this paper provides a fundamental understanding of the formative processes of igneous and metamorphic rocks, and encourages a deeper comprehension of the subject by explaining the petrologic principles.
References
More filters
ReportDOI
Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (105 Pascals) Pressure and at Higher Temperatures
TL;DR: A report about values for the entropy, molar volume, and for the enthalpy and Gibbs energy of formation for the elements and minerals and substances at 298.15 K was given in this paper.
Journal ArticleDOI
Pyroxene thermometry in simple and complex systems
TL;DR: In this article, a semi-empirical equation of state for the diopside enstatite miscibility gap has been proposed for ortho-and clinopyroxene solid solutions.
Journal ArticleDOI
Apparatus for phase‐equilibrium measurements at pressures up to 50 kilobars and temperatures up to 1750°C
F. R. Boyd,J. L. England +1 more
TL;DR: In this paper, the construction and calibration of apparatus utilizing a solid pressure medium for phase-equilibrium studies at elevated temperatures and pressures are described, and a new determination of the thallium transition, 37.1±1.3 kilobars, is given.
Journal ArticleDOI
Chromian spinel as a petrogenetic indicator: part 2. petrologic applications
TL;DR: In this article, the crystallization of chromium-bearing spinel from silicate magmas is examined, and then an attempt is made to apply the theory developed in Irvine (1965) to the principal occurrences of the...
Journal ArticleDOI
The thermodynamics of cation distributions in simple spinels
Alexandra Navrotsky,O.J. Kleppa +1 more
TL;DR: In this paper, the molar enthalpy of interchange of ions on tetrahedral sites with ions on octahedral sites was calculated from cation distribution data known at a single temperature for each spinel.
Related Papers (5)
Geothermobarometry in Four-phase Lherzolites II. New Thermobarometers, and Practical Assessment of Existing Thermobarometers
Gerhard P. Brey,T. Köhler +1 more