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Mines and Energy - Northern Territory Geological Survey


Useful Resources


Georgina Basin

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Georgina Basin

Lithology:
Sedimentary: dolostone, limestone, shale, sandstone, siltstone.
Georgina Basin
Epoch Min:
Devonian.
Epoch Max:
Cryogenian (Neoproterozoic).
Age Min:
355 Ma.
Age Max:
850 Ma.
Summary:
A widespread Neoproterozoic to Palaeozoic intracratonic basin that was initiated as part of the Centralian Superbasin and extends east into Queensland.
Relationship:
Unconformably overlies the Aileron Province, Tennant Region, Murphy Inlier, McArthur and South Nicholson Basins and Lawn Hill Platform. Interpreted to be contiguous at depth with Wiso and Daly Basins. Conformably overlies Kalkarindji Province. Unconformably overlain by Carpentaria Basin. The basin deepens towards the south along the margin with the Arunta Region.
Thickness:
Up to 3.7 km.
Economic:
Numerous deposits of sedimentary phosphate including the Wonarah phosphate deposit. Several lead-zinc occurrences are located along the southern margin. Frequent oil shows throughout the basin.
Exploration:
Major exploration target for sedimentary phosphate. Exploration for base metals, diamonds, manganese, oil and gas. Locally forms shallow cover over prospective basement.
Metamorphism:
Unmetamorphosed.
Main Reference:

Questa, 1994. Georgina Basin. Northern Territory Geological Survey Petroleum Basin Study.

Dunster JN, Kruse PD, Duffett ML and Ambrose GJ. Geology and resource potential of the southern Georgina Basin. Northern Territory Geological Survey, Digital Information Package DIP 007. [Extended abstract)].

Ambrose G, 2006. Northern Territory of Australia, onshore hydrocarbon potential, 2006. Northern Territory Geological Survey, Record 2006-003.

Munson TJ and Ambrose GJ (editors), 2007. 'Proceedings of the Central Australian Basins Symposium (CABS), Alice Springs, Northern Territory, 16-18 August, 2005.' Northern Territory Geological Survey, Special Publication 2.