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Understanding K-feldspar Ar-40/Ar-39 data: reconciling models, methods and microtextures

McLaren, Sandra; Dunlap, William James; Powell, Roger


Several descriptions of argon diffusion in K-feldspar have been developed, including the quantitative multiple-diffusion-domain (MDD) and multipath models and the qualitative 'recrystallization' model. These models remain contentious and the natural range in behaviour remains poorly understood. Feldspars from the Klokken syenite intrusion show a systematic relationship between 40Ar/39Ar age and microtexture suggesting that the loss of argon from different feldspars operates via different...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Journal of the Geological Society
DOI: 10.1144/0016-76492006-180


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