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Is there a time lag between the metamorphism and emplacement of plutons in the Axial Zone of the Pyrenees?
J. J. ESTEBAN, A. ARANGUREN, J. CUEVAS, A. HILARIO, J. M. TUBÍA, A. LARIONOV, S. SERGEEV
Journal:

Geological Magazine / Volume 152 / Issue 5 / September 2015

Published online by Cambridge University Press:

13 April 2015, pp. 935-941
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Detailed petrographic and geochemical studies conducted on zircons from the Lys-Caillaouas pluton reveal their igneous and metamorphic affinities. The igneous zircons constrain the emplacement of the pluton to 300±2 Ma. By contrast, the metamorphic zircons yield an older age of 307±3 Ma, which probably dates the thermal peak of the HT/LP Variscan metamorphism. Therefore, a short time lag of c. 7 Ma emerges between the metamorphic climax and emplacement of the pluton in the Axial Zone (Pyrenees).