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Beyond 500ka: Progress and prospects in the Ulogy of speleothems, and their application to studies in palaeoclimate, human evolution, biodiversity and tectonics

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Title: Beyond 500ka: Progress and prospects in the Ulogy of speleothems, and their application to studies in palaeoclimate, human evolution, biodiversity and tectonics
Authors: Woodhead, Jon jdwood@unimelb.edu.au, Pickering, Robyn
Source: Chemical Geology. Sep2012, Vol. 322-323, p290-299. 10p.
Subjects: Speleothems, Climate change, Biodiversity, Structural geology, Parameter estimation, Archaeological site location
Abstract: Abstract: This review summarises current research aimed at extending the chronology and thus scientific utility of speleothems beyond the 500ka limit previously imposed by conventional U methods. The Uscheme is familiar to all geoscientists but its application to speleothems is a relatively recent development, and one set to revolutionise their use in studies of climate change, human evolution and migration, biodiversity, tectonics and landscape evolution. Technological advances, such as the introduction of multi-collector ICPMS instruments, have played a key role in this breakthrough and multiple inter-laboratory and inter-method comparisons provide evidence that the methodology is now mature and that the ages obtained are robust. Some impediments remain, in particular with respect to corrections for initial isotopic disequilibrium (younger samples) and the construction of internal chronologies (older samples) but these are areas of intense research activity and are likely to see significant advances in the near future. The coupling of speleothem U with other nascent technologies, offering the prospect of precise palaeotemperature estimation, is an exciting development in palaeoclimate science, while Ulogies of archaeological sites are producing important new insights into human evolution. Although less well developed at this point, the methodology appears equally well suited and significant for future studies of past faunal change, and landscape evolution. [Copyright &y& Elsevier]
Copyright of Chemical Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Beyond 500ka: Progress and prospects in the Ulogy of speleothems, and their application to studies in palaeoclimate, human evolution, biodiversity and tectonics
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  Data: <searchLink fieldCode="AR" term="%22Woodhead%2C+Jon%22">Woodhead, Jon</searchLink><i> jdwood@unimelb.edu.au</i><br /><searchLink fieldCode="AR" term="%22Pickering%2C+Robyn%22">Pickering, Robyn</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Geology%22">Chemical Geology</searchLink>. Sep2012, Vol. 322-323, p290-299. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Speleothems%22">Speleothems</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Biodiversity%22">Biodiversity</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+geology%22">Structural geology</searchLink><br /><searchLink fieldCode="DE" term="%22Parameter+estimation%22">Parameter estimation</searchLink><br /><searchLink fieldCode="DE" term="%22Archaeological+site+location%22">Archaeological site location</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: This review summarises current research aimed at extending the chronology and thus scientific utility of speleothems beyond the 500ka limit previously imposed by conventional U methods. The Uscheme is familiar to all geoscientists but its application to speleothems is a relatively recent development, and one set to revolutionise their use in studies of climate change, human evolution and migration, biodiversity, tectonics and landscape evolution. Technological advances, such as the introduction of multi-collector ICPMS instruments, have played a key role in this breakthrough and multiple inter-laboratory and inter-method comparisons provide evidence that the methodology is now mature and that the ages obtained are robust. Some impediments remain, in particular with respect to corrections for initial isotopic disequilibrium (younger samples) and the construction of internal chronologies (older samples) but these are areas of intense research activity and are likely to see significant advances in the near future. The coupling of speleothem U with other nascent technologies, offering the prospect of precise palaeotemperature estimation, is an exciting development in palaeoclimate science, while Ulogies of archaeological sites are producing important new insights into human evolution. Although less well developed at this point, the methodology appears equally well suited and significant for future studies of past faunal change, and landscape evolution. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Geology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.chemgeo.2012.06.017
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      – SubjectFull: Structural geology
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      – SubjectFull: Parameter estimation
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              Text: Sep2012
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