Crustal architecture of the Capricorn Orogen, Western Australia and associated metallogeny

A 581 km vibroseis-source, deep seismic reflection survey was acquired through the Capricorn Orogen of Western Australia and, for the first time, provides an unprecedented view of the deep crustal architecture of the West Australian Craton. The survey has imaged three principal suture zones, as well...

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Bibliographic Details
Published in:Australian journal of earth sciences 2013-10, Vol.60 (6-7), p.681-705
Main Authors: Johnson, S. P., Thorne, A. M., Tyler, I. M., Korsch, R. J., Kennett, B. L. N., Cutten, H. N., Goodwin, J., Blay, O., Blewett, R. S., Joly, A., Dentith, M. C., Aitken, A. R. A., Holzschuh, J., Salmon, M., Reading, A., Heinson, G., Boren, G., Ross, J., Costelloe, R. D., Fomin, T.
Format: Article
Language:English
Subjects:
Architecture
Ashburton Basin
Capricorn Orogen
Collier Basin
Cratons
Edmund Basin
Fluid dynamics
Fluid flow
Fluids
Fortescue Basin
Gascoyne Province
Glenburgh Orogeny
Glenburgh Terrane
Hamersley Basin
intracontinental reworking
mineralisation
Narryer Terrane
Ophthalmian Orogeny
Pilbara Craton
seismic reflection study
suture zone
Sutures
Tectonics
West Australian Craton
Western Australia
Yilgarn Craton
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Summary:A 581 km vibroseis-source, deep seismic reflection survey was acquired through the Capricorn Orogen of Western Australia and, for the first time, provides an unprecedented view of the deep crustal architecture of the West Australian Craton. The survey has imaged three principal suture zones, as well as several other lithospheric-scale faults. The suture zones separate four seismically distinct tectonic blocks, which include the Pilbara Craton, the Bandee Seismic Province (a previously unrecognised tectonic block), the Glenburgh Terrane of the Gascoyne Province and the Narryer Terrane of the Yilgarn Craton. In the upper crust, the survey imaged numerous Proterozoic granite batholiths as well as the architecture of the Mesoproterozoic Edmund and Collier basins. These features were formed during the punctuated reworking of the craton by the reactivation of the major crustal structures. The location and setting of gold, base metal and rare earth element deposits across the orogen are closely linked to the major lithospheric-scale structures, highlighting their importance to fluid flow within mineral systems by the transport of fluid and energy direct from the mantle into the upper crust.
ISSN:0812-0099
1440-0952
DOI:10.1080/08120099.2013.826735