A new geobarometer for the assemblage biotite-muscovite-chlorite-quartz |
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| Authors: | ROGER POWELL JANE A EVANS |
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| Institution: | Department of Earth Sciences, University of Leeds, Leeds LS2 9JT, UK; Department of Geology and Mineralogy, University of Oxford, Parks Road, Oxford, UK |
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| Abstract: | The equilibrium thermodynamics of the reaction:
And the equilibrium constant is composed of activities formulated using ideal mixing on sites. Consideration is given to the evaluation of uncertainties in pressures calculated using the geobarometer. Preliminary testing suggests that the geobarometer has considerable potential. Much wider testing is now required. |
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| Keywords: | Key-words: biotite chlorite geobarometry Mg-Al celadonite muscovite |
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