Summary of results. Joint NTGS-GA geochronology project: Birrindudu Basin

Abstract

This Record presents data collected in August and September 2023 as part of the ongoing Northern Territory Geological Survey - Geoscience Australia SHRIMP geochronology project under the National Collaborative Framework agreement and Geoscience Australia's 2016-2024 Exploring for the Future program. New U-Pb SHRIMP zircon geochronological results, derived from six sedimentary samples collected from the Birrindudu Basin in the Northern Territory, are presented herein.

Detrital zircon U-Pb analyses were conducted on representative samples of six sedimentary formations, namely the Burtawurta Formation (Wattie Group) and the previously undated Timber Creek Formation, Bynoe Formation, Mount Gordon Sandstone, Banyan Formation and Battle Creek Formation (all Bullita Group), collected during NTGS fieldwork in 2015. The aims of the study were to generate detrital zircon age spectra and determine maximum depositional ages for all the sampled units, which could be integrated with existing data to assist in interpretations of possible sedimentary provenances and contribute to a broader understanding of Proterozoic stratigraphy across northern Australia.