Pine Creek Orogen

Sedimentary, metamorphic and igneous: greywacke, shale, siltstone, sandstone, dolostone, tuff, granite, felsic volcanic rocks, dolerite, basalt, micaceous schist, metapelite, calc-silicate rock, quartzite.

Epoch Min:

Palaeoproterozoic.

Epoch Max:

Palaeoproterozoic.

Age Min:

1800 Ma.

Age Max:

2050 Ma.

Summary:

Variably deformed and metamorphosed Palaeoproterozoic metasedimentary and intrusive rocks forming part of the North Australian Craton.

Relationship:

Overlies Neoarchaean basement. Unconformably overlain by Palaeo-Mesoproterozoic  McArthur and Birrindudu basins, Palaeozoic Daly and Arafura basins and Phanerozoic Money Shoal Basin.

Thickness:

Up to 14 km.

Economic:

Hosts a variety of mineral commodities including gold, uranium, base metals, PGE, iron ore, manganese, magnesite and phosphate.

Metamorphism:

Lower greenschist to granulite.

Main References:

Ahmad M and Hollis JA, 2013. Chapter 5: Pine Creek Orogen: in Ahmad M and Munson TJ (compilers) ‘Geology and Mineral Resources of the Northern Territory’. Northern Territory Geological Survey, Special Publication 5