Authors / CoAuthors
Blewett, R.S. | Henson, P.A. | Champion, D.C. | Goleby, B.R.
Abstract
The Archaean Eastern Yilgarn Craton is Australia's premier mineral province, with many of the nation's world-class Au and Ni deposits. One of the reasons that this piece of crust is especially endowed can be found with its 3D architecture, which is the mappable outcome or signature of a complex interplay of geodynamic and metallogenic processes during key times in the earth's evolution. This signature is represented at a range of scales from the whole of the lithosphere down to camp and deposit scale, and ultimately down to individual lodes. New insights regarding the signatures of these systems are reported here for a range of scales. The biggest elements of the system can be mapped in terms of changes in the velocity structure of the mantle lithosphere, and also differences in crustal velocity between differently endowed domains/terranes. At an upper crustal level/scale, domes are identified as a characteristic architecture associated with world-class deposits in the region. These domes can be mapped regionally by use of geologically and seismically constrained inversions of the gravity data. The role of granites and geodynamics at the time of mineralisation played crucial roles in establishing the domal architecture of the system. Finally, a "Golden Corridor" exists beneath the best real estate in the Yilgarn the belt from Kambalda to Wiluna and possibly under cover to the Plutonic Mine. This dome, defines an efficient fluid focussing 3D architecture. We can now more effectively select areas (explore) under cover by utilising the mappability of the architecture (signature of the system).
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nonGeographicDataset
eCat Id
64017
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- External PublicationConference Paper
- ( Theme )
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- mineral exploration
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- AU-WA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2006-01-01T00:00:00
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geoscientificInformation
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[-33.0, -25.0, 116.0, 126.0]
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