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Allanite behaviour during incipient melting in the southern Central Alps

Gregory, Courtney; Rubatto, Daniela; Hermann, Joerg; Berger, A.; Engi, Martin

Description

The response of allanite to incipient melting was investigated in migmatites from the Tertiary Barrovian-type sequence of the Central Alps (southern Switzerland, northern Italy). Inheritance and new mineral growth were recorded in composite allanite grains sampled from meta-granitoids and leucosomes. Ion microprobe (SHRIMP) dating of high Th/U allanite cores in meta-granitoids yield Permian ages consistent with magmatic crystallisation dating protolith intrusion. In contrast, low Th/U allanite...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/61768
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2012.01.020

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