Authors / CoAuthors
Wilford, J.R. | de Caritat, P. | Cooper, M. | Minty, B.R.S.
Abstract
The National Geochemical Survey of Australia (NGSA) provides the first national coverage of multi-element chemistry at a continental scale. The NGSA data is an important complement to other national-scale geological and geophysical datasets, particularly the Radiometric Map of Australia. The Radiometric Map of Australia shows potassium (K) measured directly from gamma-rays emitted when 40K decays to argon (40Ar), whereas thorium (Th) and uranium (U) do not emit gamma-rays. Instead, their abundances are inferred indirectly by measuring gamma-ray emissions associated with parent radionuclides (thallium-208 for Th, and bismuth-214 for U) within their radioactive decay chains. Airborne-derived grids provide a continuous prediction of these radioelements across the Australian landscape. In contrast, the NGSA data provide a series of precise single point geochemical measurements of surface (0-10 cm) and near-surface (~60-80 cm depth) unconsolidated catchment outlet sediments.
Product Type
document
eCat Id
72965
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Keywords
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- GA PublicationRecord
- ( Theme )
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- geochemistry
- ( Theme )
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- regolith
- ( Theme )
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- radiometrics
- ( Theme )
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- soils
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- AU
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
2011-01-01T00:00:00
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Topic Category
geoscientificInformation
Series Information
Record 2011/039
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Unknown
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[-44.0, -8.0, 108.0, 156.0]
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