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Lea, David W (1989): Ba/Ca ratios in benthic foraminifera from recent core tops. PANGAEA, https://doi.org/10.1594/PANGAEA.399803, Supplement to: Lea, David W; Boyle, Edwards A (1989): Barium content of benthic foraminifera controlled by bottom-water composition. Nature, 338, 751-753, https://doi.org/10.1038/338751a0

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Abstract:
The carbon isotope ratio (delta13C) and cadmium content (Cd/Ca) of benthic foraminifera shells have been used to reconstruct deep-water circulation patterns of the glacial oceans. These tracers co-vary with phosphorus in the modern ocean because they are nearly quantitatively regenerated from sinking biological debris in the upper water column. Hence they can be used to reconstruct the distribution of labile nutrients in glacial water masses. Independent constraints on glacial deep-ocean circulation patterns could be provided by a tracer of the distribution of silica and alkalinity, the deeply regenerated constituents of planktonic hard parts. Barium shares key aspects of its behaviour with these refractory nutrients because it is removed from solution in surface waters and incorporated into sinking particles which slowly dissolve deep in the water column and in the sediments. The fractionation of Ba between deep-water masses of the major ocean basins is largely controlled by thermohaline circulation patterns, so Ba conforms to different boundary conditions from Cd and 13C. As Ba substitutes into trigonal carbonates, it is a potential palaeoceano-graphic tracer if the Ba content of foraminifera shells reflects ambient dissolved Ba concentrations. Here we present data from Recent core-top benthic foraminifera which indicate that the Ba content of some recent calcitic benthic foraminifera does co-vary with bottom-water Ba.
Funding:
National Science Foundation (NSF), grant/award no. 0230149: Collaborative Research: Digital Optical Imaging of Ice Cores for Curation and Scientific Applications
National Science Foundation (NSF), grant/award no. 0230396: Preparation for a Deep Ice Coring Project in West Antarctica
National Science Foundation (NSF), grant/award no. 0440817: Investigation of Climate, Ice Dynamics and Biology using a Deep Ice Core from the West Antarctic Ice Sheet Ice Divide
National Science Foundation (NSF), grant/award no. 0440819: Investigation of the Stratigraphy and Time Scale of the WAIS Divide Ice Core Using Electrical Methods
National Science Foundation (NSF), grant/award no. 0537661: Collaborative Research: Stable Isotopes of Ice in the WAIS Divide Deep Ice Core
National Science Foundation (NSF), grant/award no. 0538657: Nitrogen and Oxygen Gas Isotopes in the WAIS Divide Ice Core as Constraints on Chronology, Temperature, and Accumulation Rate
National Science Foundation (NSF), grant/award no. 0539232: Collaborative Research: Physical Properties of the WAIS Divide Deep Ice Core
National Science Foundation (NSF), grant/award no. 0839042: Collaborative Research: Cosmogenic Radionuclides in the Deep WAIS Divide Core
National Science Foundation (NSF), grant/award no. 0839066: Major Ion Chemical Analysis of Brittle Ice in the WAIS Divide Ice Core
National Science Foundation (NSF), grant/award no. 0839093: Collaborative Research: Integrated High Resolution Chemical and Biological Measurements on the Deep WAIS Divide Core
National Science Foundation (NSF), grant/award no. 0839137: Collaborative Research: Cosmogenic Radionuclides in the Deep WAIS Divide Core
National Science Foundation (NSF), grant/award no. 0944191: Collaborative Research: Establishing the Chronology and Histories of Accumulation and Ice Dynamics for the WAIS Divide Core
National Science Foundation (NSF), grant/award no. 0944197: Collaborative Research: Establishing the Chronology and Histories of Accumulation and Ice Dynamics for the WAIS Divide Core
National Science Foundation (NSF), grant/award no. 0944266: Collaborative Research: Climate, Ice Dynamics and Biology Using a Deep Ice Core from the West Antarctic Ice Sheet Ice Divide
National Science Foundation (NSF), grant/award no. 0944348: Collaborative Research: Climate, Ice Dynamics and Biology using a Deep Ice Core from the West Antarctic Ice Sheet Ice Divide
National Science Foundation (NSF), grant/award no. 0944584: Methane Isotope Variations Covering the Holocene from the WAIS Divide Core
National Science Foundation (NSF), grant/award no. 1043092: Collaborative Research: Stable Isotopes of Ice in the Transition and Glacial Sections of the WAIS Divide Deep Ice Core
National Science Foundation (NSF), grant/award no. 1043500: Collaborative Research: Completing an ultra-high resolution methane record from the WAIS Divide ice core
National Science Foundation (NSF), grant/award no. 1043518: Collaborative Research: Completing an ultra-high resolution methane record from the WAIS Divide ice core
National Science Foundation (NSF), grant/award no. 1142041: Collaborative Research: Investigating Upper Pleistocene Rapid Climate Change using Continuous, Ultra-High-Resolution Aerosol and Gas Measurements in the WAIS Divide Ice Core
National Science Foundation (NSF), grant/award no. 1142069: Collaborative Research: Developing an Antarctic Tephra Database for Interdisciplinary Paleoclimate Research (AntT)
National Science Foundation (NSF), grant/award no. 1142115: Tephrochronology of the WAIS Divide Ice Core: Linking Ice Cores through Volcanic Records
National Science Foundation (NSF), grant/award no. 1142166: Collaborative Research: Investigating Upper Pleistocene Rapid Climate Change using Continuous, Ultra-High-Resolution Aerosol and Gas Measurements in the WAIS Divide Ice Core
National Science Foundation (NSF), grant/award no. 1204172: Collaborative Research: Continuous Records of Greenhouse Gases and Aerosol Deposition During the Holocene: Testing the Fidelity of New Methods for Reconstructing Atmospheric Change
Coverage:
Median Latitude: 12.677898 * Median Longitude: -21.743405 * South-bound Latitude: -54.550000 * West-bound Longitude: -106.183300 * North-bound Latitude: 78.000000 * East-bound Longitude: 158.800000
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 0.160 m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1LATITUDELatitudeGeocode
2LONGITUDELongitudeGeocode
3Sample code/labelSample labelLea, David W* denotes cores with > 15 cm Holocene sediment
4DEPTH, sediment/rockDepthmGeocode
5Depth, top/minDepth topmLea, David W
6Depth, bottom/maxDepth botmLea, David W
7Depth, bathymetricBathy depthmLea, David W
8BariumBaµmol/lLea, David W
9Barium/Calcium ratioBa/Caµmol/molLea, David WCibicidoides wuellerstorfi
10Standard deviationStd dev±Lea, David WCibicidoides wuellerstorfi
11Barium/Calcium ratioBa/Caµmol/molLea, David WCibicidoides kullenbergi
12Standard deviationStd dev±Lea, David WCibicidoides kullenbergi
13Barium/Calcium ratioBa/Caµmol/molLea, David WUvigerina spp.
14Standard deviationStd dev±Lea, David WUvigerina spp.
Size:
288 data points

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