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)