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Martín, Rodrigo Sebastian; Albarracín, Paula Belén; García Chapori, Natalia Luz; Laprida, Cecilia; Groeneveld, Jeroen; Kasten, Sabine (2023): Mg/Ca ratios in benthic foraminifera from surface sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945554

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Published: 2023-06-27 • DOI registered: 2023-07-26

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Abstract:
Today, climate change has become an issue of global significance. These changes are known to be deeply related to heat distribution and paleoceanographic variations. On the other hand, it is clear that the chemistry of benthic foraminifera shells is an irreplaceable tool to understand these changes at great depths. In this work, the differences between the magnesium assimilation in Uvigerina sp. and Cibicides wuellerstorfi. Mg/ca records from shells can be used for paleothermometry reconstruction of deep ocean currents. But it is necessary to control the impact that the carbonate ion could have on the benthic foraminiferal fauna. Here, a database containing the records of Magnesium/Calcium present in the benthic foraminifera of the western South Atlantic between 32.69°S and 47.3°S were analyzed. The study was carried out on the species of the genus Uvigerina spp. and in Cibicidoides wuellerstorfi. For sediment cores GeoB2715-1, GeoB2718-2, GeoB2727-1, GeoB6208-1, GeoB6222-2, GeoB6309-2, GeoB6330-1, GeoB6334-2 and GeoB6336-2 we used the ages originally published in Raitzsch et al. (2008, doi:10.1594/PANGAEA.759564). And for cores GeoB22702-1, GeoB22703-1, GeoB22704-1, GeoB22706-1, GeoB22707-2 -53,78333, GeoB22708-3, GeoB22712-3, GeoB22715-1, GeoB22721-1, GeoB22723-2, GeoB22725-1, GeoB22735-2, GeoB2703-6, GeoB2722-1, GeoB6212-2, GeoB6213-1, GeoB6334-1, LBV T1-2, LBV T4-1, LBV T6-1, LBV T12-1, LBV T13-2, LBV T406-2 and LBV T407-2 we used the ages originally published in García Chapori et al. (2019, doi:10.1594/PANGAEA.907931). Mg/Ca measurements were performed with inductively coupled plasma optical emission spectrometry (ICP-OES; Agilent Technologies, 700 series with ASX-520 Cetac autosampler and micronebulizer) at MARUM, University of Bremen.
Keyword(s):
Benthic foraminifera; Carbonate chemistry; Mg/Ca paleothermometry; oceanography; South Altantic
Supplement to:
García Chapori, Natalia Luz; Martín, Rodrigo Sebastian; Groeneveld, Jeroen; Albarracín, Paula Belén; Laprida, Cecilia (2023): NEW INSIGHTS ON BENTHIC MG/CA PALEOTHERMOMETRY IN THE WESTERN SOUTH ATLANTIC. Ameghiniana, https://doi.org/10.5710/AMGH.25.03.2023.3513
Related to:
Raitzsch, Markus; Kuhnert, Henning; Groeneveld, Jeroen; Bickert, Torsten (2008): Benthic foraminifer Mg/Ca anomalies in South Atlantic core top sediments and their implications for paleothermometry. Geochemistry, Geophysics, Geosystems, 9(5), Q05010, https://doi.org/10.1029/2007GC001788
Funding:
Agencia Nacional de Promoción Científica y Tecnológica (MINCYT), grant/award no. PICT-2017-1458
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 3528/8-1
Coverage:
Median Latitude: -39.052962 * Median Longitude: -53.947216 * South-bound Latitude: -48.013333 * West-bound Longitude: -58.618333 * North-bound Latitude: -31.808000 * East-bound Longitude: -45.664700
Date/Time Start: 1994-06-19T00:00:00 * Date/Time End: 2018-02-03T16:10:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m
Event(s):
GeoB2703-6 * Latitude: -38.510000 * Longitude: -54.203333 * Date/Time: 1994-06-19T00:00:00 * Elevation: -1167.0 m * Recovery: 0.37 m * Location: Slope off Argentina * Campaign: M29/1 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG)
GeoB2715-1 * Latitude: -43.903333 * Longitude: -57.661667 * Date/Time: 1994-06-26T00:00:00 * Elevation: -3280.0 m * Recovery: 0.23 m * Location: Slope off Argentina * Campaign: M29/1 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: 6 large, 3 small tubes
GeoB2718-2 * Latitude: -47.306667 * Longitude: -58.173333 * Date/Time: 1994-06-29T00:00:00 * Elevation: -2991.0 m * Recovery: 1.5 m * Location: Slope off Argentina * Campaign: M29/1 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL) * Comment: tube bended at 1,60m, core recovered
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventMartín, Rodrigo Sebastian
2Optional event labelEvent 2Martín, Rodrigo Sebastian
3Date/Time of eventDate/TimeMartín, Rodrigo Sebastian
4Longitude of eventLongitudeMartín, Rodrigo Sebastian
5Latitude of eventLatitudeMartín, Rodrigo Sebastian
6Elevation of eventElevationmMartín, Rodrigo Sebastian
7DEPTH, sediment/rockDepth sedmMartín, Rodrigo SebastianGeocode
8Depth, top/minDepth topmMartín, Rodrigo Sebastian
9Depth, bottom/maxDepth botmMartín, Rodrigo Sebastian
10Uvigerina spp., Magnesium/Calcium ratioUvigerina spp. Mg/Cammol/molMartín, Rodrigo SebastianICP-OES (Agilent 700)
11Cibicidoides wuellerstorfi, Magnesium/Calcium ratioC. wuellerstorfi Mg/Cammol/molMartín, Rodrigo SebastianICP-OES (Agilent 700)
12Reference/sourceReferenceMartín, Rodrigo Sebastian
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
180 data points

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