Ord Basin

Sedimentary: limestone, shale, sandstone.

Epoch Min:

Devonian.

Epoch Max:

Cambrian.

Age Min:

360 Ma.

Age Max:

540 Ma.

Summary:

An intracratonic basin with main exposures in Western Australia. Outcrops in the Northern Territory are Cambrian in age.

Relationship:

Conformably overlies the Cambrian Kalkarindji Province.

Thickness:

Up to 3 km.

Economic:

Small copper occurrences at and adjacent to Antrim Plateau Volcanics-Headleys Limestone contact.

Metamorphism:

Unmetamorphosed.

Main Reference:

Kruse PD and Munson TJ, 2013. Chapter 33: Ord Basin: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5