Controls on Devonian-Carboniferous magmatism in Tasmania, based on inherited zircon age patterns, Sr, Nd and Pb isotopes, and major and trace element geochemistry
Devonian-Carboniferous granites are widespread in Tasmania. In eastern Tasmania, Devonian granites intrude Ordovician-Early Devonian quartz-rich turbidites of the Mathinna Supergroup. The earliest (~400 Ma) I-type granodiorites may be arc-related. Following the Tabberabberan Orogeny (~389 Ma), more felsic and, finally, strongly fractionated I- and S-type granites were emplaced until ~373 Ma. In contrast, western Tasmania granites intrude a more diverse terrane of predominantly marine shelf...[Show more]
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|Source:||Australian Journal of Earth Sciences|
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