2026-04-14T08:04:51Zhttps://recercat.cat/oai/requestoai:recercat.cat:2072/4110322024-11-24T23:33:32Zcom_2072_98col_2072_378192
An evaluation of controls on planktonic foraminiferal Sr/Ca : comparison of water column and core-top data from a North Atlantic transect
Mortyn, P. Graham
Elderfield, Henry
Anand, Pallavi
Greaves, Mervyn
Paleotemperature reconstruction
Planktonic foraminifera
Trace elements
Sr/Ca in planktonic foraminifera recovered from the water column over 0-800 m along a meridional transect in the North Atlantic Ocean from 30° to 60°N were compared with data from core-top samples on the same transect and with in situ temperatures determined from water column CTD profiles. Species belonging to the globorotaliid genus show significant variability in Sr/Ca from place to place, whereas non-globorotaliid species show no significant variability. This variability for the globorotaliid species in core-top samples has already been shown to covary with calcification temperature derived from δ¹⁸O, but it also covaries with bottom depth (symptomatic of a dissolution artifact). These alternatives are distinguishable from the water column data for which the globorotaliid species show a small temperature dependence of 0.025 mmol/mol/°C within the range 5-15°C. However, temperature dependence is not supported by glacial-interglacial differences in Sr/Ca for globorotaliid and non-globorotaliid species, and at least from this perspective, a [CO₃²⁻] influence seems more likely.
2005
Article
https://ddd.uab.cat/record/158137
urn:10.1029/2005GC001047
urn:oai:ddd.uab.cat:158137
urn:recercauab:ARE-42113
urn:scopus_id:34547981711
urn:wos_id:000234363200004
urn:oai:egreta.uab.cat:publications/95ea0c60-b107-42b0-9875-7657b88ab497
eng
European Commission EVK2-CT-2002-00135
Geochemistry, geophysics, geosystems ; Vol. 6, Issue 12 (Dec. 2005)
open access
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