Comment on “Ultrapotassic magmatism in the heyday of the Variscan Orogeny: the story of the Třebíč Pluton, the largest durbachitic body in the Bohemian Massif” by Janoušek et al

• Published in: International journal of earth sciences : Geologische Rundschau Vol. 110; no. 3; pp. 1127 - 1132
• Main Authors: Schaltegger, U., Gaynor, S. P., Widmann, P., Kotková, J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2021; Springer Nature B.V
• Subjects: Ablation; Abrasion; Age; Discussion; Earth and Environmental Science; Earth Sciences; Geochemistry; Geology; Geophysics/Geodesy; Laser ablation; Lasers; Magma; Massifs; Mineral Resources; Orogeny; Plutons; Radiometric dating; Sedimentology; Structural Geology; CA-ID-TIMS; Moldanubian domain; LA-ICP-MS; Třebíč pluton; Bohemian massif; Zircon; U–Pb
• ISSN: 1437-3254; 1437-3262
• DOI: 10.1007/s00531-020-01975-w

This comment addresses the incorrect treatment and presentation of data from laser ablation ICP-MS U–Pb age determinations of two samples of the Třebíč Pluton. This results in inaccurate ages and error assessment, invalidating the age interpretations of the authors. To corroborate our arguments, new high-precision chemical abrasion ID-TIMS data are presented that unequivocally define the emplacement age of the Třebíč pluton.