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 (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Elderfield, Henry (University of Cambridge. Department of Earth Sciences)
Anand, Pallavi (Vrije Universiteit Amsterdam)
Greaves, Mervyn (University of Cambridge. Department of Earth Sciences)
Fecha: |
2005 |
Resumen: |
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. |
Ayudas: |
European Commission EVK2-CT-2002-00135
|
Derechos: |
Tots els drets reservats. |
Lengua: |
Anglès |
Documento: |
Article ; recerca ; Versió publicada |
Materia: |
Paleotemperature reconstruction ;
Planktonic foraminifera ;
Trace elements |
Publicado en: |
Geochemistry, geophysics, geosystems, Vol. 6, Issue 12 (Dec. 2005) , ISSN 1525-2027 |
DOI: 10.1029/2005GC001047
El registro aparece en las colecciones:
Documentos de investigación >
Documentos de los grupos de investigación de la UAB >
Centros y grupos de investigación (producción científica) >
Ciencias >
Institut de Ciència i Tecnologia Ambientals (ICTA)Artículos >
Artículos de investigaciónArtículos >
Artículos publicados
Registro creado el 2016-06-17, última modificación el 2022-09-04