The effects of diagenesis on the trace element and stable isotope geochemistry of non-marine ostracod valves
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The trace-element and stable-isotope geochemistry of non-marine ostracod valves is a valuable tool in palaeolimnology. However, the potential effects of early diagenesis on geochemical composition are poorly documented. In this study, the effect of partial dissolution on the trace-element (Sr and Mg) and isotopic (18O/16O and 13C/12C) composition of late Quaternary non-marine ostracod valves was investigated. Both unaltered and extremely degraded valves of the species Cypretta brevisaepta recovered from the same core level had trace-element and stable-isotope ratios that were drawn from the same statistical population, suggesting that the geochemical effects of early diagenesis are minimal. However, since the possibility remains that diagenesis could under certain circumstances alter valve chemistry, only valves in pristine condition should be used in palaeoenvironmental studies whenever feasible.
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About this Article
- The effects of diagenesis on the trace element and stable isotope geochemistry of non-marine ostracod valves
Journal of Paleolimnology
Volume 28, Issue 2 , pp 245-252
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- Kluwer Academic Publishers
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- Early diagenesis
- Stable isotope
- Trace element
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- Author Affiliations
- 1. Centre for Earth and Environmental Science Research, School of Earth Sciences and Geography, Kingston University, KT1 2EE, Kingston-upon-Thames, UK
- 2. British Geological Survey, NERC Isotope Geosciences Laboratory, NG12 5GG, Nottingham, UK
- 3. Environmental Change Research Centre, University College London, WC1H 0AP, London, UK