Stratigraphy,sedimentology, structure and tectonics of Lower Ordovician and Devonian strata of South Mootwingee,Darling Basin,western New South Wales |
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| Authors: | G Neef |
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| Institution: | School of Biological, Earth and Environmental Sciences , University of New South Wales , NSW, 2052, Australia E-mail: bees@unsw.edu.au |
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| Abstract: | K‐Ar age measurements using the 40Ar/39Ar total fusion technique on nephrite from two occurrences in the Great Serpentine Belt southeast of Tamworth yielded ages of 273 ± 5.8 and 280 ± 5.6 m.y. The K‐Ar ages indicate that tectonic emplacement, during which the nephrite was produced as a reaction product between ultra‐mafic rock and country rock, occurred early in the Permian about 275–280 m.y. ago. |
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| Keywords: | Bancannia Trough Darling Basin Devonian fluvial deposition Kanimblan lacustrine deposition Tabberabberan Wonominta Block |
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