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A culture-based cal...
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Filipsson, HelenaLund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science
(författare)
A culture-based calibration of benthic foraminiferal paleotemperature proxies : δ18O and Mg/Ca results
- Artikel/kapitelEngelska2010
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2010-04-29
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Copernicus GmbH,2010
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LIBRIS-ID:oai:lup.lub.lu.se:2a84b9cc-6ad3-44c8-9dc5-8611caff552f
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https://lup.lub.lu.se/record/1600430URI
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https://doi.org/10.5194/bg-7-1335-2010DOI
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Språk:engelska
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Sammanfattning på:engelska
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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.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Bernhard, JoanWoods Hole Oceanographic Institution
(författare)
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Lincoln, SaraMassachusetts Institute of Technology
(författare)
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McCorkle, DanielWoods Hole Oceanographic Institution
(författare)
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KvartärgeologiGeologiska institutionen
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Biogeosciences: Copernicus GmbH7:4, s. 1335-13471726-4189
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