An experimental calibration of the nickel in garnet geothermometer with applications: reply
Article Abstract:
Griffin and Ryan's empirical geothermometer suffers from huge uncertainties and hence cannot be used as a test for the experimentally derived nickel in garnet geothermometer. The uncertainties are erased if empirical calculations are carried out at a constant pressure. Canil's experimental results have been misinterpreted as an attack on the use of geothermometry. The experiments carried out by Canil obey Henry's law. The discrepancies between the empirical and experimental version of the thermometer above 950 degree Celsius are due to the large uncertainties in the empirical method.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1996
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A detailed isotopic and petrological study of a single garnet from the Gassetts Schist, Vermont
Article Abstract:
The petrological and isotopic results from a study on a garnet at Gassetts Schist, Vermont, explains precisely the pressure and the temperature required for the growth of garnets. Garnets preserve sufficient mineral inclusions during their growth. The development of a garnet requires a temperature of 540 degree Celsius to 635 degrees Celsius, decompression of 9.7 kbar to 7.2 kbar, a rise in temperature of 95 degree Celsius and a 7 kim. uplift. A very slow uplift or a rise in magmatic heat input depends on the degree of rise in the temperature.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1993
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Non-ideal mixing in the phlogopite-annite binary: constraints from experimental data on Mg-Fe partitioning and a reformulation of the biotite-garnet geothermometer
Article Abstract:
Research describing experimental data on Mg-Fe partitioning is presented. Data show that such partitioning between garnet and biotite are disparate. Updated mixing variables applied to thermodynamic analysis show that a non-ideal mix is obtained in the phlogopite-annite binary at temperatures ranging from 550 degrees celsius to 950 degrees celsius. The combination of Mg-Fe mixing enthalpy retrieved values, standard state enthalpy and entropy variations and thermochemical results generated a geothermometric function for Mg-Fe fractionation.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1992
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- Abstracts: An experimental study of the Fe-Mn exchange between garnet and ilmenite. Experimental tests of garnet peridotite oxygen barometry
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- Abstracts: Muscovite-garnet granites in the Mojave Desert: relation to crustal structure of the cretaceous arc: comment and reply