Geochemical composition of Baltic benthic foraminifera collected and cultured over a large salinity gradient.

Helena L. Filipsson, Jeroen Groeneveld, William E N Austin, Kate F. Darling, Nadine B Quintana Krupinski, Clare Bird, David McCarthy, Edward Hathorne, Magali Schweizer

Forskningsoutput: KonferensbidragKonferensabstractPeer review

Sammanfattning

Some of the most significant challenges in paleoclimate research arise from the need to both understand and reduce the uncertainty associated with proxies for climate reconstructions. These challenges were further highlighted in connection with the IODP Exp.347 Baltic Sea Paleoenvironment. We have investigated temperature and salinity proxies through a combination of field-and culture-based benthic foraminiferal samplesfrom the Baltic(sal. 14)-Kattegat(sal. 32), together with genetic characterization. Two long-term experiments at twotemperatures and three salinities were performed. We present foraminiferal assemblage,trace element (Mg/Ca, Ba/Ca, Mn/Ca),and stable O and C isotope results from these locations, including LA-ICP-MS data from cultured specimens. Furthermore, specimens of Elphidium and Ammonia were genetically characterized; the results indicate that the same genetic type of Elphidiumis found in both salinity regimes, but that the Ammoniagenetic types differ depending on the prevailing salinity regime.
Originalspråkengelska
Antal sidor1
StatusPublished - 2017 aug. 17
EvenemangGoldschmidt Conference on Geochemistry - Paris, Paris, Frankrike
Varaktighet: 2017 aug. 132017 aug. 18

Konferens

KonferensGoldschmidt Conference on Geochemistry
Land/TerritoriumFrankrike
OrtParis
Period2017/08/132017/08/18

Ämnesklassifikation (UKÄ)

  • Geologi

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