Tanami Region

Lithology:

Sedimentary, metamorphic and igneous: greywacke, shale, siltstone, sandstone, BIF, carbonaceous shale, amphibolite, dolerite, granite, felsic volcanic rocks.

Epoch Min:

Palaeoproterozoic.

Epoch Max:

Palaeoproterozoic.

Age Min:

1790 Ma.

Age Max:

1860 Ma.

Summary:

Palaeoproterozoic metasedimentary, intrusive and volcanic rocks forming part of the North Australian Craton.

Relationship:

Overlain by the Palaeo-Mesoproterozoic Birrindudu Basin to the north and Neoproterozoic to Palaeozoic Wiso Basin to the east. Has transitional contact with the Palaeo-Neoproterozoic Aileron Province to the southeast.

Thichness:

N/A.

Economic:

Hosts world class orogenic gold deposits. Potential for REE mineralisation and unconformity-style or palaeochannel-hosted uranium

Metamorphism:

Greenschist to amphibolite facies.

Main Reference:

Ahmad M, Vandenberg LC and Wygralak AS, 2013. Chapter 11: Tanami Region: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5