Complex Paleozoic magmatic and metamorphic evolution in the Argentera Massif (Western Alps) resolved with U-Pb dating
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]
|Collections||ANU Research Publications|
|Source:||Schweizerische Mineralogische und Petrographische Mitteilungen|
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