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
Data
| 1 Depth sed [m] | 2 Age [ka BP] | 3 G. ruber w Mg/Ca [mmol/mol] |
|---|---|---|
| 0.04 | 3.369 | 3.9120 |
| 0.06 | 4.283 | 3.9960 |
| 0.10 | 6.269 | 3.8270 |
| 0.12 | 7.441 | 3.8045 |
| 0.14 | 8.160 | 3.8420 |
| 0.16 | 8.901 | 4.0145 |
| 0.18 | 9.764 | 3.7205 |
| 0.20 | 10.630 | 3.9860 |
| 0.22 | 11.426 | 3.5160 |
| 0.24 | 12.506 | 3.7910 |
| 0.26 | 13.490 | 3.7970 |
| 0.28 | 14.538 | 3.4500 |
| 0.30 | 15.715 | 3.2180 |
| 0.32 | 16.832 | 3.0820 |
| 0.34 | 17.751 | 3.1940 |
| 0.38 | 19.595 | 3.3020 |
| 0.40 | 20.549 | 3.0200 |
| 0.42 | 21.534 | 3.2500 |
| 0.44 | 22.241 | 3.3860 |
| 0.46 | 22.951 | 3.4840 |
| 0.48 | 24.346 | 3.4440 |
| 0.50 | 26.389 | 3.7850 |
| 0.54 | 29.266 | 3.6770 |
| 0.56 | 30.025 | 3.4240 |
| 0.58 | 30.823 | 3.5190 |
| 0.60 | 31.715 | 3.4430 |
| 0.62 | 32.552 | 3.4030 |
| 0.64 | 33.321 | 3.3800 |
| 0.68 | 34.963 | 3.5160 |
| 0.70 | 35.816 | 3.6860 |
| 0.74 | 37.259 | 3.3320 |
| 0.76 | 37.935 | 3.7900 |
| 0.78 | 38.547 | 3.4890 |
| 0.84 | 39.975 | 3.7650 |
| 0.86 | 40.479 | 3.0220 |
| 0.88 | 40.948 | 3.3540 |
| 0.90 | 41.452 | 3.0350 |
| 0.92 | 41.944 | 3.1680 |
| 0.94 | 42.446 | 3.4770 |
| 1.00 | 43.819 | 3.5330 |
| 1.02 | 44.257 | 3.2060 |
| 1.04 | 44.674 | 3.2160 |
| 1.10 | 45.909 | 3.1640 |
| 1.12 | 46.318 | 3.5040 |
| 1.14 | 46.774 | 3.0400 |
| 1.16 | 47.221 | 3.2390 |
| 1.24 | 48.989 | 3.6540 |