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Systematic analysis of K-feldspar 40 Ar/ 39 Ar step heating results II; Relevance of laboratory argon diffusion properties to nature

Lovera, Oscar; Grove, Marty; Harrison, Timothy


We examine a database containing the results of 40Ar/39Ar step-heating experiments performed on 194 basement K-feldspars to recover thermal history information. Qualitative examination of 40Ar/39Ar systematics reveals that about half of the K-feldspars examined are sufficiently well behaved to be suitable for thermal history analysis. Correlation algorithms are developed to quantitatively assess the degree to which age and 39Ar release spectra are compatible with the same volume diffusion...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/S0016-7037(01)00846-8


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