Citation:

PANGAEA.992005

Name: Oxygen and carbon isotopic composition of Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land, East Antarctica over the last 75 ka
Published: 2026-02-19
License: https://creativecommons.org/licenses/by/4.0/

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Published: 2026-02-19 • DOI registered: 2026-04-18

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Abstract:

Oxygen and carbon isotopic composition (δ18O and δ13C) of Neogloboquadrina pachyderma sinistral from eastern Weddell Sea off Dronning Maud Land. The foraminiferal specimens were selected from gravity core PS128_2-3, which was recovered from Bungenstock Plateau (eastern Weddell Sea off Dronning Maud Land 69.4107°S, 5.5890°W ) from 1868 m water depth during R/V POLASTERN Cruise PS128 in 2022 (Tiedemann and Müller, 2022). Sampling and analytical studies were carried out from ~88 to 434.5 cm core depth at ~1 cm spatial resolution. The records cover the last ~75 kyrs. The stable carbon (δ13C; ‰ VPDB) and oxygen isotope (δ18O, ‰ VPDB) analyses were performed on a Thermo Scientific MAT 253 mass spectrometer with an automated Kiel IV Carbonate Preparation Device. The δ18O data provide stratigraphical information and were used to calculate the ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW).

Supplement to:

Pinho, Tainã Marcos Lima; Nürnberg, Dirk; Meckler, Anna Nele; Mollenhauer, Gesine; Müller, Juliane; Lohmann, Gerrit; Lembke-Jene, Lester; Hidayat, Salma; Rigalleau, Vincent; Lamy, Frank; Tiedemann, Ralf (2026): Millennial-to-orbital-scale subsurface ocean warming and Polynya formation off Dronning Maud Land during the last glacial. Nature Communications, 17(1), 2440, https://doi.org/10.1038/s41467-026-70498-w

References:

Tiedemann, Ralf; Müller, Juliane (2022): The Expedition PS128 of the Research Vessel POLARSTERN to the Weddell Sea, Lazarew Sea, Riiser-Larsen Sea, Cosmonaut Sea and Cooperation Sea in 2022. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 764, 235 pp, https://doi.org/10.57738/BzPM_0764_2022

Project(s):

International Science Program for Integrative Research in Earth Systems (AWI_INSPIRES)

Funding:

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS128_01: Marine Geology

Coverage:

Latitude: -69.411694 * Longitude: -5.587413

Date/Time Start: 2022-01-17T00:54:00 * Date/Time End: 2022-01-17T00:54:00

Minimum DEPTH, sediment/rock: 0.885 m * Maximum DEPTH, sediment/rock: 4.345 m

Event(s):

PS128_2-3 * Latitude: -69.411694 * Longitude: -5.587413 * Date/Time: 2022-01-17T00:54:00 * Elevation: -1868.0 m * O2A Registry URI: https://registry.o2a-data.de/items/3165 * Location: Weddell Sea * Campaign: (EASI-1) * Basis: * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Pinho, Tainã Marcos Lima		Geocode
2	AGE	Age	ka BP	Pinho, Tainã Marcos Lima		Geocode
3	Neogloboquadrina pachyderma sinistral, δ18O	N. pachyderma s δ18O	‰ PDB	Pinho, Tainã Marcos Lima	Mass spectrometer, Thermo Fisher Scientific, MAT 253; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV	vs. VPDB
4	Neogloboquadrina pachyderma sinistral, δ13C	N. pachyderma s δ13C	‰ PDB	Pinho, Tainã Marcos Lima	Mass spectrometer, Thermo Fisher Scientific, MAT 253; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV	vs. VPDB

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

454 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Age [ka BP]	3 N. pachyderma s δ18O [‰ PDB]	4 N. pachyderma s δ13C [‰ PDB]
0.885	18.220	4.882	0.100
0.895	18.493	4.891	0.222
0.905	18.743	4.957	0.119
0.915	18.884	5.019	0.178
0.925	19.025	4.978	0.116
0.945	19.306	5.013	0.002
0.955	19.447	5.041	0.104
0.965	19.586	5.116	0.005
0.975	19.727	5.076	-0.064
0.995	20.134	5.037	0.026
1.045	20.956	4.997	0.052
1.065	21.345	5.025	0.129
1.095	22.171	4.970	-0.056
1.125	22.738	4.993	-0.096
1.145	23.019	4.932	-0.172
1.165	23.537	4.837	-0.064
1.185	24.345	5.003	-0.086
1.195	24.736	4.842	0.029
1.205	25.126	4.947	-0.054
1.295	28.574	4.668	0.062
1.305	28.949	4.786	0.017
1.325	29.896	4.854	0.127
1.345	30.930	4.443	0.010
1.385	32.417	4.823	0.245
1.425	33.713	4.825	0.214
1.445	34.230	4.648	0.207
1.465	34.849	4.674	0.298
1.485	35.649	4.676	0.289
1.495	36.026	4.638	0.262
1.525	37.090	4.500	0.197
1.545	37.879	4.489	0.259
1.565	38.541	4.686	0.424
1.585	39.117	4.777	0.243
1.595	39.415	4.587	0.249
1.605	39.741	4.730	0.255
1.665	40.903	4.563	0.313
1.685	41.367	4.514	0.353
1.695	41.610	4.514	0.358
1.705	41.831	4.511	0.223
1.725	42.159	4.469	0.290
1.765	42.820	4.445	0.463
1.785	43.074	4.371	0.422
1.795	43.199	4.449	0.527
1.805	43.326	4.485	0.598
1.845	43.969	4.519	0.467
1.865	44.268	4.491	0.454
1.895	44.758	4.514	0.397
1.905	44.909	4.475	0.400
1.915	45.056	4.498	0.276
1.945	45.521	4.379	0.297
1.955	45.674	4.346	0.325
1.965	45.811	4.404	0.403
1.975	45.960	4.363	0.426
2.005	46.419	4.452	0.295
2.015	46.550	4.499	0.471
2.025	46.684	4.337	0.264
2.035	46.823	4.284	0.375
2.045	46.966	4.439	0.232
2.065	47.223	4.554	0.184
2.085	47.459	4.479	0.130
2.105	47.680	4.400	0.346
2.125	47.922	4.481	0.179
2.145	48.163	4.488	0.082
2.165	48.394	4.498	0.181
2.205	48.871	4.646	-0.012
2.215	48.998	4.654	-0.078
2.225	49.126	4.552	-0.034
2.235	49.252	4.687	-0.013
2.245	49.373	4.685	-0.033
2.255	49.491	4.590	0.032
2.265	49.616	4.638	-0.084
2.275	49.742	4.418	0.191
2.285	49.869	4.524	0.070
2.295	49.997	4.670	0.016
2.315	50.238	4.509	0.287
2.335	50.487	4.388	0.284
2.355	50.739	4.408	0.286
2.375	50.984	4.426	0.232
2.395	51.228	4.404	0.401
2.435	51.729	4.460	0.295
2.455	51.969	4.465	0.352
2.465	52.089	4.419	0.306
2.485	52.341	4.494	0.066
2.495	52.471	4.497	0.296
2.515	52.716	4.621	0.217
2.525	52.836	4.447	0.279
2.535	52.962	4.602	0.238
2.565	53.330	4.493	0.295
2.575	53.455	4.400	0.290
2.585	53.583	4.435	0.249
2.595	53.711	4.585	0.135
2.605	53.837	4.488	0.268
2.615	53.955	4.423	0.263
2.625	54.076	4.495	0.273
2.635	54.199	4.532	0.184
2.645	54.327	4.484	0.395
2.675	54.692	4.492	0.273
2.685	54.813	4.500	0.294
2.695	54.937	4.506	0.328
2.705	55.062	4.573	0.175
2.715	55.176	4.583	0.174
2.725	55.295	4.593	0.276
2.735	55.416	4.592	0.292
2.745	55.539	4.600	0.106
2.755	55.663	4.604	0.153
2.765	55.773	4.495	0.238
2.785	56.003	4.514	0.424
2.795	56.123	4.632	0.189
2.815	56.400	4.545	0.309
2.825	56.566	4.466	0.355
2.835	56.743	4.504	0.226
2.845	56.916	4.500	0.323
2.855	57.076	4.508	0.192
2.865	57.290	4.533	0.381
2.875	57.520	4.541	0.292
2.885	57.750	4.505	0.182
2.905	58.177	4.466	0.209
2.915	58.387	4.542	0.237
2.925	58.610	4.507	0.292
2.935	58.845	4.571	0.246
2.945	59.082	4.410	0.225
2.965	59.482	4.543	0.331
2.975	59.653	4.552	0.253
2.985	59.842	4.537	0.253
2.995	60.028	4.655	0.241
3.005	60.208	4.686	0.352
3.015	60.326	4.800	0.209
3.025	60.433	4.675	0.100
3.035	60.537	4.756	0.123
3.045	60.635	4.862	0.181
3.075	60.951	4.776	0.245
3.085	61.060	4.935	0.135
3.095	61.164	4.709	0.146
3.105	61.263	4.973	0.128
3.115	61.374	4.889	-0.040
3.125	61.486	4.933	-0.038
3.135	61.597	4.958	0.143
3.145	61.703	5.042	0.018
3.155	61.811	4.727	-0.046
3.165	61.922	4.772	0.173
3.175	62.030	5.003	0.006
3.185	62.142	4.990	-0.035
3.195	62.250	4.842	-0.043
3.205	62.355	4.971	0.070
3.225	62.574	4.929	-0.223
3.235	62.685	4.930	-0.136
3.245	62.795	5.018	-0.137
3.255	62.898	5.000	-0.133
3.265	63.006	4.881	-0.127
3.275	63.113	4.939	-0.272
3.285	63.223	4.939	-0.204
3.295	63.330	4.969	-0.205
3.305	63.436	4.962	-0.395
3.315	63.542	4.998	-0.249
3.325	63.650	5.070	-0.178
3.335	63.759	4.997	-0.207
3.345	63.868	5.050	-0.192
3.355	63.978	4.925	-0.392
3.365	64.086	4.979	-0.228
3.375	64.197	4.938	-0.315
3.385	64.310	4.864	-0.334
3.395	64.424	4.988	-0.350
3.405	64.535	4.954	-0.121
3.435	64.856	4.882	-0.211
3.445	64.967	4.873	-0.235
3.455	65.076	4.882	-0.169
3.465	65.189	4.926	-0.300
3.475	65.299	4.836	-0.407
3.485	65.413	4.911	-0.355
3.495	65.524	4.875	-0.186
3.525	65.858	4.740	-0.125
3.575	66.396	4.902	-0.138
3.585	66.508	4.843	-0.295
3.595	66.620	4.786	-0.158
3.625	66.942	4.692	-0.107
3.635	67.048	4.782	-0.339
3.645	67.159	4.891	-0.162
3.655	67.270	4.849	-0.365
3.665	67.372	4.707	-0.110
3.675	67.472	4.840	-0.188
3.695	67.685	4.680	-0.284
3.705	67.793	4.733	-0.069
3.705	67.793	4.733	-0.069
3.715	67.891	4.726	-0.174
3.725	67.988	4.703	-0.179
3.745	68.192	4.766	-0.230
3.755	68.298	4.796	0.035
3.765	68.410	4.963	-0.112
3.775	68.523	5.120	-0.230
3.785	68.639	4.924	-0.356
3.795	68.750	4.906	-0.176
3.805	68.861	4.846	-0.272
3.815	68.973	4.772	-0.246
3.825	69.089	4.978	-0.151
3.835	69.203	4.901	-0.327
3.845	69.314	4.946	-0.184
3.855	69.419	4.832	-0.437
3.865	69.532	4.738	-0.185
3.875	69.651	4.927	-0.470
3.885	69.770	4.977	-0.148
3.895	69.890	4.862	-0.159
3.905	70.004	4.792	-0.228
3.915	70.121	4.909	-0.243
3.925	70.239	4.681	-0.412
3.945	70.478	4.820	-0.365
3.955	70.592	4.751	-0.162
3.965	70.709	4.834	-0.346
3.975	70.830	4.853	-0.363
3.985	70.951	4.775	-0.126
3.995	71.074	4.858	-0.467
4.005	71.194	4.725	-0.100
4.035	71.545	4.807	-0.347
4.045	71.662	4.698	-0.180
4.055	71.782	4.611	-0.235
4.135	72.716	4.564	-0.084
4.195	73.391	4.655	-0.232
4.205	73.507	4.664	-0.142
4.215	73.622	4.662	0.004
4.245	73.960	4.513	-0.171
4.255	74.063	4.343	-0.038
4.285	74.393	4.744	-0.331
4.295	74.497	4.566	0.049
4.305	74.596	4.763	-0.201
4.315	74.707	4.609	-0.190
4.325	74.824	4.568	-0.151
4.335	74.935	4.482	-0.018
4.345	75.049	4.669	-0.037