(Table 1) Elemental composition of benthic foraminifera from South Atlantic core top samples ...

• Main Authors: Raitzsch, Markus, Kuhnert, Henning, Hathorne, Ed C, Groeneveld, Jeroen, Bickert, Torsten
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Carbonate ion; Δ carbonate ion content; Planulina wuellerstorfi, Uranium/Calcium ratio; Planulina wuellerstorfi, Uranium/Calcium ratio, standard deviation; Planulina wuellerstorfi, partition coefficient; Planulina wuellerstorfi, Manganese/Calcium ratio; Planulina wuellerstorfi, Manganese/Calcium ratio, standard deviation; Planulina wuellerstorfi, Aluminium/Calcium ratio; Planulina wuellerstorfi, Aluminium/Calcium ratio, standard deviation; Cibicidoides mundulus, Uranium/Calcium ratio; Cibicidoides mundulus, Uranium/Calcium ratio, standard deviation; Cibicidoides mundulus, partition coefficient; Cibicidoides mundulus, Manganese/Calcium ratio; Cibicidoides mundulus, Manganese/Calcium ratio, standard deviation; Cibicidoides mundulus, Aluminium/Calcium ratio; Cibicidoides mundulus, Aluminium/Calcium ratio, standard deviation; Giant box corer; MultiCorer; Gravity corer Kiel type; Calculated from WOCE, using the equation of Jansen et al. 2002; see references; see comment; M6/6; M9/4; M20/2; M23/2; M29/1; M34/3; M46/2; M46/3; Meteor 1986; Center for Marine Environmental Sciences MARUM; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Arctic; Antarctic; Antarc*; Foraminifera*; Planktonic foraminifera; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.762797; https://doi.pangaea.de/10.1594/PANGAEA.762797

The ocean plays a major role in the global carbon cycle, and attempts to reconstruct past changes in the marine carbonate system are increasing. The speciation of dissolved uranium is sensitive to variations in carbonate system parameters, and previous studies have shown that this is recorded in the uranium-to-calcium ratio (U/Ca) of the calcite shells of planktonic foraminifera. Here we test whether U/Ca ratios of deep-sea benthic foraminifera are equally suited as an indicator of the carbonate system. We compare U/Ca in two common benthic foraminifer species (Planulina wuellerstorfi and Cibicidoides mundulus) from South Atlantic core top samples with the calcite saturation state (Delta [CO3**2-] = [CO3**2-]in situ - [CO3**2-]sat) of the ambient seawater and find significant negative correlations for both species. Compared with planktonic foraminifera, the sensitivity of U/Ca in benthic foraminifera to changes in Delta [CO3**2-] is about 1 order of magnitude higher. Although Delta [CO3**2-] exerts the ... : standard deviation=standard error of the mean.Partition coefficient DU = (U/Cashell)/(U/Caseawater) using a U/Caseawater = 1390 nmol/mol [Ku et al., 1977].*Outlier not used in regressions. ...