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Complex Paleozoic magmatic and metamorphic evolution in the Argentera Massif (Western Alps) resolved with U-Pb dating

Rubatto, Daniela; Schaltegger, Urs; Lombardo, B; Compagnoni, Roberto


The timing of pre-Alpine magmatism and metamorphism in the Gesso-Stura Terrain (NE Argentera massif, External Crystalline Massifs) has been investigated by U-Pb dating. Conventional ID-TIMS analysis of zircons from an eclogite constrained the intrusion of the gabbroic protolith at 462 ± 6 Ma, in agreement with an ion microprobe age of 457 ± 6 Ma on the same sample. Regardless of their pristine magmatic zoning, the zircons from the eclogite suffered lead loss during one or more thermal events. A...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Schweizerische Mineralogische und Petrographische Mitteilungen


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