Halls Creek Orogen
Lithology: | Metamorphic, igneous and volcanic: phyllite, schist, rhyolite, rhyodacite, granite and dolerite. | |
Epoch Min: | Palaeoproterozoic. | |
Epoch Max: | Palaeoproterozoic. | |
Age Min: | 1800 Ma. | |
Age Max: | 1870 Ma. | |
Summary: | Palaeoproterozoic metasedimentary, intrusive and volcanic rocks forming part of the North Australian Craton. Mainly exposed in Western Australia | |
Relationship: | Unconformably overlain by Palaeo-Mesoproterozoic Fitzmaurice, Neoproterozoic Wolfe and Phanerozoic Bonaparte basins. | |
Thickness: | N/A | |
Economic: | No known mineral occurrences in Northern Territory. In Western Australia hosts mafic-hosted Ni-Cu and PGE mineralisation, diamonds, VMS-style base metals and orogenic gold mineralisation. | |
Metamorphism: | Greenschist to amphibolite facies. | |
Main Reference: | Ahmad M and Scrimgeour IR, 2013. Chapter 7: Halls Creek Orogen: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5 |
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