Authors / CoAuthors
Fraser, G. | Neumann, N. | Szpunar, M. | Reid, A. | McAvaney, S.
Abstract
The Gawler Craton preserves a complex, multi-stage history spanning an age range from Mesoarchean through to Mesoproterozoic. Uncertainties concerning the spatial distribution and tectonic significance of various stages in this regional history are reflected in contrasting geodynamic scenarios that place the Gawler Craton in widely differing positions with respect to other Australian cratonic elements throughout the Proterozoic. Here we present new U-Pb SHRIMP zircon ages collected from a regional-scale transect across northern Eyre Peninsula. These new ages serve both to further define the distribution of previously known rock forming episodes and tectonothermal reworking events, as well as identify the presence of previously unrecognised events. The new geochronological constraints are incorporated into geological interpretation of a recently-acquired deep seismic reflection profile that provides an east-west crustal-scale cross section across northern Eyre Peninsula.
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nonGeographicDataset
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69972
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- External Publication
- ( Theme )
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- geochronology
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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_Internal
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2010-01-01T00:00:00
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