Authors / CoAuthors
Lyons, P.
Abstract
Deep seismic reflection profiles and potential-field data show that the crustal architecture of the Olympic Cu-Au province in the vicinity of the giant Olympic Dam deposit is dominated by northwest-trending thrusts that acted as first-order fluid-pathways for its IOCG mineralising system. The thrusts were initiated sometime between the end of the Archaean and the late Palaeoproterozoic (~2.5 Ga to ~1.6 Ga), probably during the Kimban Orogeny (~1.73 Ga), and reactivated during a far-field response to convergence at ~1.6 Ga. Comparisons with the tectonics governing the mineralisation in the Andean margin demonstrate that extensional characteristics of the IOCG systems in that setting were also produced in response to convergence. Fe-oxide alteration in the Olympic Cu-Au province is readily detected in potential-field data and its distribution can be mapped, in 3-D, via inversion methods.
Product Type
nonGeographicDataset
eCat Id
68305
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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Australia
Keywords
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- PowerPoint
- ( Theme )
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- seismics
- ( Theme )
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- geochemistry
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- AU-SA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
2006-01-01T00:00:00
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unknown
Topic Category
geoscientificInformation
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Unknown
Parent Information
Extents
[-31.0, -30.0, 136.5, 137.25]
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