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Strontium content of ostracods indicates lacustrine palaeosalinity

Journal Article


Abstract


  • Individual non-marine ostracod valves contain Sr in proportion to the Sr content of their host lake water. Two commonly coexisting, large planktonic species, Mytilocypris praenuncia and Australocypris robusta, have a Sr distribution coefficient KD (Sr/Ca) of 0.082 which is independent of temperature in the range 10-18��C. If the relationship between salinity and the Sr content of a hydrologically simple lake is known, palaeosalinities can be calculated from fossil ostracods. We present here palaeosalinities for the past 10,000 yr for Lake Keilambete, Victoria, calculated from ostracod Sr/Ca of fossil material which are in striking agreement with independent interpretations of palaeosalinity. The range of salinity spans 14-95���. We also show that a reliable quantitative continuous indicator of lacustrine palaeosalinity is important for the elucidation of continental palaeoenvironments for palaeoclimatology and archaeology and ocean-continent climatic correlations and interactions. �� 1985 Nature Publishing Group.

UOW Authors


  •   Chivas, Allan (external author)

Publication Date


  • 1985

Published In


Citation


  • Chivas, A. R., De Deckker, P., & Shelley, J. M. G. (1985). Strontium content of ostracods indicates lacustrine palaeosalinity. Nature, 316(6025), 251-253. doi:10.1038/316251a0

Scopus Eid


  • 2-s2.0-0022266764

Start Page


  • 251

End Page


  • 253

Volume


  • 316

Issue


  • 6025

Place Of Publication


Abstract


  • Individual non-marine ostracod valves contain Sr in proportion to the Sr content of their host lake water. Two commonly coexisting, large planktonic species, Mytilocypris praenuncia and Australocypris robusta, have a Sr distribution coefficient KD (Sr/Ca) of 0.082 which is independent of temperature in the range 10-18��C. If the relationship between salinity and the Sr content of a hydrologically simple lake is known, palaeosalinities can be calculated from fossil ostracods. We present here palaeosalinities for the past 10,000 yr for Lake Keilambete, Victoria, calculated from ostracod Sr/Ca of fossil material which are in striking agreement with independent interpretations of palaeosalinity. The range of salinity spans 14-95���. We also show that a reliable quantitative continuous indicator of lacustrine palaeosalinity is important for the elucidation of continental palaeoenvironments for palaeoclimatology and archaeology and ocean-continent climatic correlations and interactions. �� 1985 Nature Publishing Group.

UOW Authors


  •   Chivas, Allan (external author)

Publication Date


  • 1985

Published In


Citation


  • Chivas, A. R., De Deckker, P., & Shelley, J. M. G. (1985). Strontium content of ostracods indicates lacustrine palaeosalinity. Nature, 316(6025), 251-253. doi:10.1038/316251a0

Scopus Eid


  • 2-s2.0-0022266764

Start Page


  • 251

End Page


  • 253

Volume


  • 316

Issue


  • 6025

Place Of Publication