Paleoproterozoic orogens involved the assembly of pre-existing crustal fragments and microcontinents of both Archean and older Proterozoic age
, and thus the shape and strength of the collided elements played a key role in orogenic style and evolution.
In the Tatarka River valley, deposits fill deep karst depressions in limestone of late Proterozoic age
, near the contact weathered amphibolites.
This mineral field is a proterozoic age
sequence of metasediments intruded by later stage granites.
These sediments form a down-faulted portion of the Quamby Conglomerate of Middle Proterozoic age
The Main and South Zones are considered to be porphyry copper-molybdenum-type mineralization of Proterozoic Age
This mapping identified a NE-SW trending package of Archaean to Proterozoic age
quartzitic metasediment, gneiss and amphibolite, as well as numerous itabirite units containing millimetre to centimetre bands of magnetite.
The previous miners extracted gold from structurally controlled siliceous zones and quartz veins with disjoint pods of sulphide (pyrite, arsenopyrite, chalcopyrite), hosted in stratiform metamorphosed calcareous shales of Proterozoic age