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Article: Cave stalagmites provide new clues to Australian climate.

Article from:
Ecos
Article date:
December 1, 2008
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Cave stalagmites promise to fill a critical knowledge gap in how Australia's rainfall has changed over past centuries, supplementing the 100-year instrumental record with hundreds to potentially tens of thousands of years of rainfall data. These data will assist water management in Australia through improved mapping and modelling of past and future rainfall patterns.

Unlike other palaeoclimate records, such as tree rings or marine sediments, speleothems--cave stalagmites and stalactites--are well preserved and can potentially be precisely dated via uranium-thorium dating, allowing scientists to pinpoint changes in rainfall. Speleothems also record the [sup.14]C ...

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