Authors / CoAuthors
Claoue-Long, J.C. | Hoatson, D.M. | Jaireth, S.
Abstract
Worldwide, the discovered very large Nickel and Platinum Group Element (PGE) deposits are strongly concentrated in mafic igneous rocks of Proterozoic age. The rich Proterozoic endowment of other continents - Russia, Canada, Africa, China - contrasts with discovery in Australia, where only one world class example has been found so far (Nebo-Babel in the Musgrave Province, ~1080 Ma, approx 1m tonnes Ni). The deficit of discovery in Australia, relative to other continents, is unlikely to reflect real geological difference. Rather, it reflects the difficulty of identifying settings for mineralisation in intrusions which are under cover. This presents a major opportunity for exploration that can use the knowledge gained from other continents to predict which magmatic events and intrusions may be most prospective. Based on the settings of known very large Ni-PGE deposits, four questions can be used to distinguish highly prospective magma provinces and intrusions, from others. Where are the mafic magmatic systems? spatial / temporal correlation, under cover. Which are the very large magmatic systems? - correlation again. Which magmatic events include ultramafic magmas? - correlation again. Can crustal structure narrow the focus? -eading to feeder zones / metallogenic corridors.
Product Type
nonGeographicDataset
eCat Id
68663
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Custodian
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- External Publication
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- AU-NT
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2009-01-01T00:00:00
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unknown
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geoscientificInformation
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Unknown
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Extents
[-24.0, -20.0, 132.0, 138.0]
Reference System
Spatial Resolution
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