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A culture-based cal...
A culture-based calibration of benthic foraminiferal paleotemperature proxies : δ18O and Mg/Ca results
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- Filipsson, Helena (författare)
- Lund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science
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- Bernhard, Joan (författare)
- Woods Hole Oceanographic Institution
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- Lincoln, Sara (författare)
- Massachusetts Institute of Technology
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- McCorkle, Daniel (författare)
- Woods Hole Oceanographic Institution
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(creator_code:org_t)
- 2010-04-29
- 2010
- Engelska.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4189. ; 7:4, s. 1335-1347
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://www.biogeosc...
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https://lup.lub.lu.s...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- Benthic foraminifera were cultured for five months at four temperatures (4, 7, 14 and 21 degrees C) to establish the temperature dependence of foraminiferal calcite delta O-18 and Mg/Ca. Two Bulimina species (B. aculeata and B. marginata) were most successful in terms of calcification, adding chambers at all four temperatures and reproducing at 7 and 14 degrees C. Foraminiferal delta O-18 values displayed ontogenetic variations, with lower values in younger individuals. The delta O-18 values of adult specimens decreased with increasing temperature in all but the 4 degrees C treatment, exhibiting a relationship consistent with previous delta O-18 paleotemperature calibration studies. Foraminiferal Mg/Ca values, determined by laser ablation inductively coupled plasma mass spectrometry, were broadly consistent with previous Mg/Ca calibration studies, but extremely high values in the 4 degrees C treatment and higher than predicted values at two of the other three temperatures make it challenging to interpret these results.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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