Summary of results. Joint NTGS-AGSO Age Determination Program 1999-2001

This Record is a source document listing new zircon U-Pb isotopic ages measured for key rocks units in Australia’s Northern Territory. The samples are critical reference points in the conduct of, and interpretations made by, the Regional Geoscience Program of the Northern Territory Geological Survey (NTGS) and the dating was conducted within the Geochronology group of AGSO-Geoscience Australia. The relationships between these ages, their regional significance, and the event chronologies they constrain will be discussed in other NTGS outlets and is not developed here. The source listing of ages is being made available early as a reference document, with brief details of the locations and geological context of each sample and comments on each age interpretation, as a service to all geoscientists and mineral explorers with interests in the geology of the Northern Territory. The analytical data are plotted on Concordia diagrams (see Figures) and are summarised in Appendix Tables A1-A43. These tables are not reproduced here, but are available from NTGS upon request. Bibliographic Reference: Smith J, 2001. Summary of results. Joint NTGS – AGSO age determination program 1999-2001. Northern Territory Geological Survey, Record 2001-007.