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Raitzsch, Markus; Kuhnert, Henning; Hathorne, Ed C; Groeneveld, Jeroen; Bickert, Torsten (2011): (Table 1) Elemental composition of benthic foraminifera from South Atlantic core top samples. PANGAEA,, Supplement to: Raitzsch, M et al. (2011): U/Ca in benthic foraminifers: A proxy for the deep-sea carbonate saturation. Geochemistry, Geophysics, Geosystems, 12(6),

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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 dominant control on the average foraminiferal U/Ca, the intertest and intratest variability indicates the presence of additional factors forcing U/Ca.
German Science Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Median Latitude: -29.611049 * Median Longitude: -24.916945 * South-bound Latitude: -48.013333 * West-bound Longitude: -58.518200 * North-bound Latitude: -1.665000 * East-bound Longitude: 13.828333
Date/Time Start: 1988-03-12T00:00:00 * Date/Time End: 2000-01-31T08:10:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m
GeoB1041-1 * Latitude: -3.480000 * Longitude: -7.591667 * Date/Time: 1988-03-12T00:00:00 * Elevation: -4035.0 m * Penetration: 0.42 m * Location: Walvis Ridge * Campaign: M6/6 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG) * Comment: Karb.-schl., Forams
GeoB1105-3 * Latitude: -1.665000 * Longitude: -12.428330 * Date/Time: 1989-02-25T00:00:00 * Elevation: -3231.0 m * Penetration: 0.36 m * Recovery: 0.32 m * Location: Equatorial Atlantic * Campaign: M9/4 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG) * Comment: Karbonatschlamm
GeoB1118-2 * Latitude: -3.560000 * Longitude: -16.431660 * Date/Time: 1989-03-06T00:00:00 * Elevation: -4675.0 m * Penetration: 0.48 m * Recovery: 0.47 m * Location: Brazil Basin * Campaign: M9/4 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG) * Comment: Karbonatschlamm, Foram.
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.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5DEPTH, sediment/rockDepthmGeocode
6Depth, top/minDepth topmRaitzsch, Markus
7Depth, bottom/maxDepth botmRaitzsch, Markus
8Carbonate ion[CO3]2-µmol/kgRaitzsch, Markus
9Δ carbonate ion contentΔ[CO3]2-µmol/kgRaitzsch, MarkusCalculated from WOCE, using the equation of Jansen et al. 2002
10Planulina wuellerstorfi, Uranium/Calcium ratioP. wuellerstorfi U/Canmol/molRaitzsch, Markussee reference(s)
11Planulina wuellerstorfi, Uranium/Calcium ratio, standard deviationP. wuellerstorfi U/Ca std dev±Raitzsch, Markus
12Planulina wuellerstorfi, partition coefficientP. wuellerstorf DURaitzsch, Markussee comment
13Planulina wuellerstorfi, Manganese/Calcium ratioP. wuellerstorfi Mn/Caµmol/molRaitzsch, Markussee reference(s)
14Planulina wuellerstorfi, Manganese/Calcium ratio, standard deviationP. wuellerstorfi Mn/Ca std dev±Raitzsch, Markus
15Planulina wuellerstorfi, Aluminium/Calcium ratioP. wuellerstorfi Al/Caµmol/molRaitzsch, Markussee reference(s)
16Planulina wuellerstorfi, Aluminium/Calcium ratio, standard deviationP. wuellerstorfi Al/Ca std dev±Raitzsch, Markus
17Cibicidoides mundulus, Uranium/Calcium ratioC. mundulus U/Canmol/molRaitzsch, Markussee reference(s)
18Cibicidoides mundulus, Uranium/Calcium ratio, standard deviationC. mundulus U/Ca std dev±Raitzsch, Markus
19Cibicidoides mundulus, partition coefficientC. mundulus DURaitzsch, Markussee comment
20Cibicidoides mundulus, Manganese/Calcium ratioC. mundulus Mn/Caµmol/molRaitzsch, Markussee reference(s)
21Cibicidoides mundulus, Manganese/Calcium ratio, standard deviationC. mundulus Mn/Ca std dev±Raitzsch, Markus
22Cibicidoides mundulus, Aluminium/Calcium ratioC. mundulus Al/Caµmol/molRaitzsch, Markussee reference(s)
23Cibicidoides mundulus, Aluminium/Calcium ratio, standard deviationC. mundulus Al/Ca std dev±Raitzsch, Markus
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