Authors / CoAuthors
Champion, D.C. | van der Wielen, S.E.
Abstract
The origins of high heat production (HHP) granites - with high concentrations of the heat-producing elements Th, U and K (HPE) - is controversial, particularly large areas of such rocks. To constrain possible controls on HHP granites, we have investigated temporal changes in Th, U and K contents of Paleoarchean to Mesozoic granites in Australia, and how these relate to peri-ods of HHP magmatism. Australian HHP granites range in age from Mesoarchean to Triassic, but are most abundant in the Neoarchean, the Paleoproterozoic - early Mesoproterozoic, and the Carboniferous. HHP magmatism ranges from relatively short lived (<30 Ma) geographically-restricted events in the Neoarchean and Carboniferous, to geographically widespread, (possibly unrelated) repetitive events over an extended time period (ca. 1800 to 1500 Ma) for the Proterozoic.
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nonGeographicDataset
eCat Id
71614
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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2601
Australia
Keywords
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- External Publication
- ( Theme )
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- geochemistry
- ( Theme )
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- plate tectonics
- ( Theme )
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- geology
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2011-01-01T00:00:00
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