Fission track dating of alluvial zircons and heavy mineral provenance in Northeast Tasmania
- 1 March 1985
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 142 (2) , 351-356
- https://doi.org/10.1144/gsjgs.142.2.0351
Abstract
Three alluvial zircon concentrates from the Blue Tier region have been fission track dated in a heavy mineral provenance study of Cenozoic sediments in NE Tasmania. Zircons in one concentrate are euhedral and are fine grained (mostly 0.1 to 0.3 mm). Dating gave a combined age of 367 ± 15 Ma confirming their derivation from Upper Devonian granites. Zircons from the other concentrates are rounded and coarser-grained (mostly 2–5mm). They gave a combined age of 46.7 ± 0.6 Ma. This agrees with the K-Ar radiometric dates obtained from three Blue Tier basalts (Sutherland & Wellman, pers. comm.). Some of the geological implications of this study are outlined in this paper.Keywords
This publication has 9 references indexed in Scilit:
- Mantle-lower crust petrology from inclusions in basaltic rocks in Eastern Australia — an outlinePublished by Elsevier ,2003
- Fission track dating of zircon: Improved etching techniquesPublished by Elsevier ,2002
- A new look at statistics in fission-track datingPublished by Elsevier ,2002
- Geochemistry and Geochronology of Late Cenozoic Basalts of Southeast AsiaGSA Bulletin, 1981
- Fission track dating, thermal histories and tectonics of igneous intrusions in East GreenlandContributions to Mineralogy and Petrology, 1979
- Geochemistry and petrogenesis of Late Cenozoic alkaline basalts of ThailandBulletin of the Geological Society of Malaysia, 1978
- Thermal history of granitic rocks from western Victoria: A fission‐track dating studyJournal of the Geological Society of Australia, 1978
- The effect of weathering on fission track datingEarth and Planetary Science Letters, 1974
- Isotopic age determinations on granitic rocks from TasmaniaJournal of the Geological Society of Australia, 1965