Daly Basin

Sedimentary: limestone, dolostone, sandstone, siltstone, conglomerate.

Epoch Min:

Ordovician

Epoch Max:

Cambrian.

Age Min:

470 Ma.

Age Max:

520 Ma.

Summary:

A gently dipping intracratonic basin.

Relationship:

Unconformably overlies the Palaeoproterozoic Pine Creek Orogen and Palaeo-Mesoproterozoic Birrindudu Basin to the north and east and Neoproterozoic Victoria Basin to the west. Overlain by Mesozoic Carpentaria Basin on its southern margin.

Thickness:

Up to 1 km.

Economic:

Some carbonate-hosted base metal and barite occurrences along faulted southwestern margin. Limestone quarried in southeast.

Metamorphism:

Unmetamorphosed.

Main Reference:

Kruse PD and Munson TJ, 2013. Chapter 31: Daly Basin: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5