Late zircons from the syenite mylonites from the Plešovice quarry, Blanský les granulites

 

Petr Rajlich

Geoscience Research Reports 42, 2009 (GRR for 2008), pages 196–198

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Abstract

Highly potassic fine-grained ultramylonites with large mylonitized and biotitized garnets from Plešovice quarry in the Blanský les granulites, contain large well crystallized zircons. The undisturbed concordant U/Pb age of 338 m.y. of these zircons thus postdate the magmatic, solidification and mylonitization stage of the rock.