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Crustal setting of the Olympic Cu-Au province

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Created 14/01/2025

Updated 14/01/2025

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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.

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Title Crustal setting of the Olympic Cu-Au province
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/f214659d-8e16-43e6-a1aa-b86105764fcd
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au