Authors / CoAuthors
Sheppard, S. | Johnson, S.P. | Groenewald, P.B. | Bodorkos, S. | Rasmussen, B.
Abstract
The Gascoyne Complex is located at the western end of the Proterozoic Capricorn Orogen, which is a major tectonic zone between the Archean Yilgarn and Pilbara cratons. Early models for the evolution of the complex emphasised vertical movements of the crust with no evidence of plate tectonic processes. These ideas were supplanted in the 1990s by tectonic models that invoked subduction and collision between the Pilbara and Yilgarn cratons during the Capricorn Orogeny. A program of remapping and SHRIMP U-Pb geochronology in the complex has shown that elements of both models are correct: plate tectonic processes resulted in a collision between the Yilgarn and Pilbara cratons (probably during the 2000-1950 Ma Glenburgh Orogeny), but the complex also records a prolonged history of intracontinental reworking.
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nonGeographicDataset
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69181
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- External PublicationAbstract
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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2008-01-01T00:00:00
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geoscientificInformation
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2008/002
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