U-Pb zircon age of the youngest magmatic activity in the high tatra granites (Central Western Carpathians)

Abstract

Detailed cathodoluminescence (CL) imaging of zircon crystals, coupled with Laser Abla-tion Multi-Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) U-Pb zircon dating was used to develop new insights into the evolution of granitoids from the High Tatra Moun-tains. The zircon U-Pb results show two distinct age groups (350±5 Ma and 337±6 Ma) recorded from cores and rims domains, respectively. Obtained results point that the last magmatic activity in the Ta-tra granitoid intrusion occurred at ca. 330 Ma. The previously suggested age of 314 Ma reflects rather the hydrothermal activity and Pb-loss, coupled with post-magmatic shearing. © 2013 Silesian University of Technology, Gliwice, Poland.