South Nicholson Basin

Lithology:

Sedimentary: sandstone, siltstone, shale, conglomerate.

Epoch Min:

Mesoproterozoic.

Epoch Max:

Mesoproterozoic.

Age Min:

1430 Ma.

Age Max:

1580 Ma.

Summary:

Mesoproterozoic sedimentary basin that is considered to be equivalent to the Roper Group in the McArthur Basin.

Relationship:

Unconformably overlies Palaeoproterozoic Murphy Province and Palaeo-Mesoproterozoic Lawn Hill Platform. Unconformably overlain by Neoproterozoic to Palaeozoic Georgina Basin.

Thickness:

At least 6 km.

Economic:

Hosts minor iron occurrences. Potential for Century or McArthur River style base metals deposits, uranium, diamonds, iron and petroleum (including shale gas).

Metamorphism:

Unmetamorphosed.

Main References:

Ahmad M and Munson TJ, 2013. Chapter 19: South Nicholson Basin: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5