Kalkarindji Province

Lithology:

Igneous and minor sedimentary: tholeiitic basalt, dolerite, andesite, minor trachyte, microdolerite, basaltic flow breccia, peperite, pyroclastic deposits, quartz sandstone, siltstone, sedimentary breccia, limestone, chert.

Epoch Min:

Cambrian.

Epoch Max:

Cambrian.

Age Min:

500 Ma.

Age Max:

520 Ma.

Summary:

A widespread continental flood basalt province covering much of the northern Northern Territory, extending into Western Australia and South Australia.

Relationship:

Conformably underlies Cambrian successions of northern Georgina, northern Wiso, Daly and Ord basins. Unconformably overlies the Palaeo-Mesoproterozoic Birrindudu, Victoria, McArthur and South Nicholson basins, Palaeoproterozoic Tomkinson Province and Tanami Region.

Thickness:

Up to 1.1 km.

Economic:

Hosts small copper and barite occurrences.

Metamorphism:

Unmetamorphosed.

Main Reference:

Glass LM, Ahmad M and Dunster JN, 2013. Chapter 30: Kalkarindji Province: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5