In situ LA-ICP-MS apatite and monazite U-Pb geochronology of the Entia Dome, Aileron and Irindina provinces, Central Australia

Abstract

This Record presents isotope and trace elements data collected on apatite and monazite at the Australian Research Council Centre of Excellence in Ore Deposits (CODES) at the University of Tasmania. Analyses were carried out in May 2022 in support of Northern Territory Geological Survey's (NTGS) regional geoscientific investigations and mapping programs. Isotope data and interpretations thereof for apatite and monazite from three samples collected from the Bruna Shear Zone in HUCKITTA in the Northern Territory are presented herein. The Bruna Shear Zone juxtaposes the hanging wall Neoproterozoic-Carboniferous Irindina Province over the footwall Palaeoproterozoic Aileron Province. Samples HU21AWE2487 (Entia Metamorphics) and HU21AWE2480 (Bruna Igneous Complex) represent the sheared footwall Aileron Province. Sample HU21AWE2490 (Yambla Gneiss) is part of the sheared hanging wall Irindina Province. Apatite and monazite from different petrographic settings were analysed in order to constrain the timing of metamorphism and deformation across the shear zone.