Nagai, Renata Hanae; Alvarenga, Aislyn; deMenocal, Peter B (2022): Magnesium/Calcium ratios of Globigerinoides ruber (white) s.s. of core NAP63-1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943196
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Abstract:
Here we present planktonic foraminifera Globigerinoides ruber (white) s.s. Mg/Ca ratios (mmol/mol) obtained in marine sediment core NAP63-1 (24.8384°S, 44.3187°W, 842 m water depth, 224 cm sediment recovery) retrieved with the aid of a piston corer from the SW Atlantic upper slope. For Mg/Ca analyses, between 30-50 shells of G. ruber (white) s.s. tests were picked from the 250–300 µm size fraction and analyzed with a Thermo Scientific iCap Q quadrupole ICP-MS. Mg/Ca ratios were applied to obtain SW Atlantic sea-surface temperature estimates over the last 50 kyr. Our results highlight the relationship between the SW Atlantic sea-surface conditions and Atlantic Meridional Overturning Circulation strength.
Related to:
Alvarenga, Aislyn; Paladino, Ítalo Martins; Gerotto, Amanda; deMenocal, Peter B; Iwai, Fabiana S; Sousa, Silvia H M; Figueira, Rubens César Lopes; Mahiques, Michel Michaelovitch; Nagai, Renata Hanae (2022): S/SE Brazilian continental margin sea surface temperature and productivity changes over the last 50 kyr. Palaeogeography, Palaeoclimatology, Palaeoecology, 601, 111144, https://doi.org/10.1016/j.palaeo.2022.111144
Funding:
National Council for Scientific and Technological Development (CNPq), grant/award no. 409749/2016-8: The Atlantic meridional overturning circulation upper arm in the late Quaternary: a Southwest Atlantic view
Sao Paulo Research Foundation (FAPESP), grant/award no. 10/06147-5: Increase of the research capabilities in oceanography and related sciences in São Paulo State, Brazil
Sao Paulo Research Foundation (FAPESP), grant/award no. 13/06965-8: The SW Atlantic during the Holocene - sea water temperature and salinity changes
Sao Paulo Research Foundation (FAPESP), grant/award no. 14/08266-2: Continental slope morphological features on the SE Brazilian Margin: active tectonics versus modern oceanographic conditions
Coverage:
Latitude: -24.838400 * Longitude: -44.318733
Date/Time Start: 2013-02-26T00:00:00 * Date/Time End: 2013-02-26T00:00:00
Minimum DEPTH, sediment/rock: 0.04 m * Maximum DEPTH, sediment/rock: 1.24 m
Event(s):
NAP_63-1 * Latitude: -24.838400 * Longitude: -44.318733 * Date/Time: 2013-02-26T00:00:00 * Elevation: -842.0 m * Location: South Brazil Bight, Santos Basin * Campaign: AC07/02 * Basis: Alpha-Crucis * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Nagai, Renata Hanae | Geocode | |
| 2 | AGE | Age | ka BP | Nagai, Renata Hanae | Geocode | |
| 3 | Globigerinoides ruber white, Magnesium/Calcium ratio | G. ruber w Mg/Ca | mmol/mol | Nagai, Renata Hanae | Inductively coupled plasma - mass spectrometry (ICP-MS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
47 data points