Calcite-dolomite geothermometry in the system CaCO3-MgCO3-FeCO3; an experimental study

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Authors:Powell, Roger; Condliffe, Diana M.; Condliffe, Eric
Author Affiliations:Primary:
The Univ. at Leeds, Dep. Earth Sci., Leeds, United Kingdom
Volume Title:Journal of Metamorphic Geology
Source:Journal of Metamorphic Geology, 2(1), p.33-41. Publisher: Blackwell, Oxford, United Kingdom. ISSN: 0263-4929
Publication Date:1984
Note:In English. 6 refs.; illus. incl. 2 tables, charts
Summary:An experimental study of the system CaCO3-MgCO3-FeCO3 was undertaken to calibrate the iron correction to the calcite-dolomite geothermometer, which is based on the solubility of magnesium in calcite in the assemblage calcite + dolomite. The experiments, at 450°C and lower temperatures, resulted in products with a very small grain size and incomplete equilibration. However, application of a carefully-devised automatic data processing algorithm to analyses of the phases in experimental charges, combined with a thermodynamic analysis, results in geothermometer diagrams which should be preferred to previous theoretical predictions. Modified journal abstract. [R.A.H.]
Subjects:Alkaline earth metals; Calcite; Calcium carbonate; Carbonate rocks; Carbonates; Data processing; Dolomite; Geochemistry; Geologic thermometry; Iron; Magnesium; Metals; Metamorphic rocks; Metamorphism; Petrology; Phase equilibria; Sedimentary rocks; Thermodynamic properties; CaCO<3`-MgCO<3`-FeCO<3`; Iron carbonate; Low-grade; Magnesium carbonate
Abstract Numbers:85M/0423
Record ID:1984055660
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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