Citation:

PANGAEA.930425

Name: Coarse fraction and planktic stable isotope data from sediment core PS93/031-5 (NW Fram Strait)
Published: 2021-04-14
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Coarse fraction; Fram Strait; isotopes; Neogloboquadrina pachyderma; Quaternary

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Abstract:

The coarse fraction content and the oxygen and carbon isotopic compositions of two morphotyes of planktic foraminifers Neogloboquadrina pachyderma were determined from sediment samples obtained from sediment core PS93/031-5. The age model is based on 9 radiocarbon datings obtained on ~2000 specimens of N. pachyderma each.

Grain size measurements occurred in May-July 2017. Stable isotope measurements were performed in August 2018 to February 2019. According to radiocarbon datings (https://doi.pangaea.de/10.1594/PANGAEA.930416) converted to calibrated years with the program Calib 8.2 (http://calib.org/calib/), using the IntCal20 data set and applying a reservoir correction of 550 years), the core covers the interval of 3,750-23,230 years before present, with the hiatus covering the interval 12,660-18,550 years.

Sediment core PS93/031-5 was obtained during RV POLARSTERN expedition PS93.1 in the northwestern Fram Strait on the Northeast Greenland continental margin from 2,135 m water depth.

The data were collected to reconstruct the Late Quaternary paleoenvironment in the northwestern Fram Strait, the glacial history of the northeast Greenland shelf, and the export of freshwater from the Arctic to the North Atlantic in the last ca. 21,000 years.

Sediment slices of approx. 5 mm thickness were taken from sediment core PS93/031-5 every 0.5 cm (~30 g dry sediment per sample). Sediments were freeze-dried, weighed, and washed with deionized water through a 63 µm mesh. The remaining coarse fraction was dried at 50°C and weighed. Coarse fraction percentages were calculated as [coarse fraction weight] * 100 / [dry bulk weight].

Planktic foraminifers Neogloboquadrina pachyderma were hand-picked from the 100-250 µm fraction for stable isotope measurements. 25 specimens of morphotypes 1 and 2 as well as 40 specimens of morphotypes 4 and 5 (following the morphotype concept of Eynaud, 2011) were analyzed separately for stable oxygen and carbon isotope compositions (δ18O, δ13C) in the stable isotope lab of AWI on a Finnigan MAT 253 gas mass spectrometer coupled to the automatic carbonate preparation device Kiel IV. The mass spectrometer was calibrated via international standard NBS19 to the PDB scale. Results are given in δ-notation vs. VPDB. Details on ice volume effect corrections and calculations of differences to oxygen isotope values of equilibrium calcite (δ18Oec) are given in Spielhagen and Mackensen (under review).

Keyword(s):

Coarse fraction; Fram Strait; isotopes; Neogloboquadrina pachyderma; Quaternary

Related to:

Eynaud, Frédérique (2011): Planktonic foraminifera in the Arctic: a paleoceanographic view. IOP Conference Series: Earth and Environmental Science, 14, 1-12, https://doi.org/10.1088/1755-1315/14/1/012005

Project(s):

Environmental and Climate History Off NorthEast Greenland (ECHONEG)

System Laptev-Sea: Transdrift (TRANSDRIFT)

Funding:

Federal Ministry of Education and Research (BMBF), grant/award no. 03G0833A : Verbundprojekt: WTZ RUS: System Laptev-See: TRANSDRIFT

Federal Ministry of Education and Research (BMBF), grant/award no. 03G0833B : Verbundprojekt: WTZ RUS: System Laptev-See: TRANSDRIFT

German Research Foundation (DFG), grant/award no. DFG SP 526/5-1 : Environmental and Climate History Off NorthEast Greenland

Coverage:

Latitude: 79.349500 * Longitude: -3.523830

Date/Time Start: 2015-07-09T16:50:00 * Date/Time End: 2015-07-09T16:50:00

Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.3725 m

Event(s):

PS93/031-5 * Latitude: 79.349500 * Longitude: -3.523830 * Date/Time: 2015-07-09T16:50:00 * Elevation: -2134.5 m * Location: North Greenland Sea * Campaign: (ARK-XXIX/2.1) * Basis: * Method/Device: Giant box corer (GKG)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Spielhagen, Robert F		Geocode
2	AGE	Age	ka BP	Spielhagen, Robert F	Age, 14C calibrated, CALIB 8.2 and IntCal20	Geocode – 550 yr reservoir correction
3	Size fraction > 0.063 mm, sand	>63 µm	%	Spielhagen, Robert F		coarse fraction
4	Neogloboquadrina pachyderma, δ18O	N. pachyderma δ18O	‰ PDB	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np1-2; size fraction 100-250 µm
5	Neogloboquadrina pachyderma, δ18O standard deviation	N. pachyderma δ18O std dev	±	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np1-2
6	Neogloboquadrina pachyderma, δ18O	N. pachyderma δ18O	‰ PDB	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np4-5; size fraction 100-250 µm
7	Neogloboquadrina pachyderma, δ18O standard deviation	N. pachyderma δ18O std dev	±	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np4-5
8	Neogloboquadrina pachyderma, δ13C	N. pachyderma δ13C	‰ PDB	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np1-2; size fraction 100-250 µm
9	Neogloboquadrina pachyderma, δ13C standard deviation	N. pachyderma δ13C std dev	±	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np1-2
10	Neogloboquadrina pachyderma, δ13C	N. pachyderma δ13C	‰ PDB	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np4-5; size fraction 100-250 µm
11	Neogloboquadrina pachyderma, δ13C standard deviation	N. pachyderma δ13C std dev	±	Spielhagen, Robert F	Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV	Morphotype Np4-5
12	Neogloboquadrina pachyderma, δ18O	N. pachyderma δ18O	‰ PDB	Spielhagen, Robert F	Ice volume corrected	Morphotype Np1-2
13	Neogloboquadrina pachyderma, δ18O	N. pachyderma δ18O	‰ PDB	Spielhagen, Robert F	Ice volume corrected	Morphotype Np4-5
14	Δδ18O	Δδ18O	‰	Spielhagen, Robert F	Ice volume corrected	Morphotype Np1-2 [d18O (Np1-2) of N.pachyderma - d18Oec at 70-90 m]
15	Δδ18O	Δδ18O	‰	Spielhagen, Robert F	Ice volume corrected	Morphotype Np4-5 [d18O (Np4-5) of N.pachyderma - d18Oec at 35-45 m]

License:

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

Size:

975 data points

Data

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

1 Depth sed [m]	2 Age [ka BP] (550 yr reservoir correction, ...)	3 >63 µm [%] (coarse fraction)	4 N. pachyderma δ18O [‰ PDB] (Morphotype Np1-2; size fracti...)	5 N. pachyderma δ18O std dev [±] (Morphotype Np1-2, Mass spectr...)	6 N. pachyderma δ18O [‰ PDB] (Morphotype Np4-5; size fracti...)	7 N. pachyderma δ18O std dev [±] (Morphotype Np4-5, Mass spectr...)	8 N. pachyderma δ13C [‰ PDB] (Morphotype Np1-2; size fracti...)	9 N. pachyderma δ13C std dev [±] (Morphotype Np1-2, Mass spectr...)	10 N. pachyderma δ13C [‰ PDB] (Morphotype Np4-5; size fracti...)	11 N. pachyderma δ13C std dev [±] (Morphotype Np4-5, Mass spectr...)	12 N. pachyderma δ18O [‰ PDB] (Morphotype Np1-2, Ice volume ...)	13 N. pachyderma δ18O [‰ PDB] (Morphotype Np4-5, Ice volume ...)	14 Δδ18O [‰] (Morphotype Np1-2 [d18O (Np1-2...)	15 Δδ18O [‰] (Morphotype Np4-5 [d18O (Np4-5...)
0.0025	3.75	15.04	3.189	0.019	2.619	0.014	0.612	0.004	0.635	0.013	3.13	2.56	-1.72	-1.42
0.0075	3.96	9.47	3.133	0.012	2.339	0.006	0.748	0.008	0.472	0.011	3.10	2.31	-1.75	-1.68
0.0125	4.16	8.28	3.202	0.027	2.447	0.008	0.803	0.006	0.435	0.005	3.17	2.41	-1.68	-1.57
0.0175	4.37	7.90	2.991	0.019	2.556	0.016	0.692	0.011	0.464	0.011	2.95	2.52	-1.90	-1.46
0.0225	4.58	7.44	3.191	0.009	2.549	0.012	0.631	0.004	0.464	0.006	3.15	2.51	-1.70	-1.47
0.0275	4.78	6.73	3.136	0.011	2.669	0.010	0.594	0.012	0.520	0.008	3.10	2.64	-1.75	-1.35
0.0325	4.99	7.15	3.175	0.011	2.480	0.014	0.568	0.006	0.621	0.008	3.15	2.45	-1.71	-1.53
0.0375	5.20	6.87	3.208	0.008	2.464	0.007	0.559	0.007	0.462	0.008	3.17	2.43	-1.68	-1.55
0.0425	5.40	7.48	3.021	0.010	2.946	0.020	0.658	0.003	0.453	0.010	2.98	2.91	-1.87	-1.07
0.0475	5.61	7.05	3.096	0.017	2.605	0.011	0.601	0.009	0.303	0.009	3.04	2.55	-1.81	-1.43
0.0525	5.82	7.14	3.323	0.018	2.490	0.020	0.648	0.010	0.390	0.002	3.25	2.41	-1.61	-1.57
0.0575	6.13	6.02	3.205	0.004	2.841	0.014	0.620	0.007	0.298	0.006	3.11	2.74	-1.74	-1.24
0.0625	6.44	6.50	3.194	0.016	2.459	0.009	0.634	0.008	0.126	0.014	3.10	2.37	-1.75	-1.61
0.0675	6.75	6.69	3.227	0.021	2.423	0.007	0.496	0.013	0.354	0.005	3.14	2.33	-1.71	-1.65
0.0725	7.06	6.10	3.229	0.011	2.699	0.022	0.464	0.006	0.385	0.008	3.14	2.61	-1.71	-1.37
0.0775	7.37	6.40	3.096	0.009	2.968	0.033	0.456	0.005	0.155	0.015	3.03	2.90	-1.82	-1.08
0.0825	7.68	6.84	3.304	0.011	2.827	0.006	0.484	0.010	0.159	0.004	3.22	2.74	-1.63	-1.24
0.0875	7.99	6.69	3.425	0.006	2.944	0.012	0.446	0.005	0.268	0.009	3.30	2.81	-1.56	-1.17
0.0925	8.30	7.07	3.299	0.014	2.735	0.013	0.405	0.007	0.211	0.012	3.13	2.56	-1.73	-1.42
0.0975	8.61	6.40	3.170	0.017	1.830	0.010	0.352	0.012	0.107	0.009	2.97	1.63	-1.88	-2.35
0.1025	8.92	6.47	3.386	0.035	1.843	0.011	0.429	0.011	0.316	0.007	3.19	1.65	-1.66	-2.33
0.1075	9.23	8.94	3.222	0.014	2.536	0.017	0.136	0.008	-0.140	0.009	2.99	2.30	-1.86	-1.68
0.1125	9.54	7.29	2.951	0.014	2.592	0.014	0.200	0.008	0.140	0.009	2.66	2.30	-2.20	-1.68
0.1175	9.62	8.80	3.350	0.014	2.610	0.023	0.273	0.013	-0.050	0.007	3.03	2.29	-1.82	-1.69
0.1225	9.70	7.77	3.384	0.017	2.852	0.008	0.282	0.005	-0.151	0.010	3.07	2.53	-1.78	-1.45
0.1275	9.78	6.09	3.027	0.010	2.311	0.008	0.360	0.008	-0.021	0.011	2.70	1.98	-2.15	-2.00
0.1325	9.85	4.86	3.358	0.011	2.606	0.021	0.297	0.011	-0.280	0.012	3.02	2.27	-1.83	-1.71
0.1375	9.93	2.84	3.062	0.018	2.124	0.011	0.383	0.011	-0.180	0.010	2.71	1.77	-2.14	-2.21
0.1425	10.01	2.77	3.190	0.014	2.138	0.010	0.323	0.009	-0.108	0.007	2.83	1.78	-2.02	-2.20
0.1475	10.09	1.85	3.295	0.022	2.023	0.011	0.341	0.015	-0.120	0.006	2.93	1.66	-1.92	-2.32
0.1525	10.17	1.80	3.115	0.013	2.103	0.010	0.231	0.010	-0.335	0.009	2.75	1.74	-2.10	-2.24
0.1575	10.25	1.63	3.042	0.004	1.909	0.010	0.231	0.010	0.019	0.010	2.67	1.54	-2.18	-2.44
0.1625	10.33	1.55	2.841	0.005	0.754	0.020	0.199	0.003	-0.381	0.006	2.47	0.38	-2.38	-3.60
0.1675	10.41	1.17	2.579	0.013	0.631	0.027	0.033	0.002	-1.127	0.011	2.20	0.26	-2.65	-3.73
0.1725	10.85	1.06	2.744	0.006	1.722	0.018	-0.038	0.003	-0.692	0.007	2.33	1.31	-2.52	-2.67
0.1775	11.30	0.97	2.807	0.008	0.640	0.010	-0.173	0.008	-1.257	0.008	2.33	0.16	-2.52	-3.82
0.1825	11.74	1.16	2.551	0.031	1.619	0.010	-0.309	0.014	-1.231	0.011	2.00	1.07	-2.85	-2.91
0.1875	12.19	1.76	2.998	0.012	1.575	0.017	-0.069	0.014	-0.952	0.013	2.35	0.92	-2.51	-3.06
0.1925	12.64	1.07	2.780	0.019	0.780	0.015	-0.280	0.008	-1.587	0.016	2.00	0.00	-2.85	-3.98
0.1975	12.64	2.55	2.944	0.019	2.254	0.019	-0.344	0.012	-1.254	0.002	2.16	1.47	-2.69	-2.51
0.2025	12.64	2.69	2.939	0.031	1.751	0.041	-0.321	0.008	-1.040	0.011	2.16	0.97	-2.69	-3.01
0.2075	12.64	2.19	2.820	0.020	0.971	0.023	0.019	0.009	-0.620	0.010	2.04	0.19	-2.81	-3.79
0.2125	12.64	1.83	2.263	0.007	0.542	0.013	-0.314	0.009	-0.889	0.008	1.48	-0.24	-3.37	-4.22
0.2175	12.65	2.22	2.543	0.016	1.350	0.017	-0.031	0.009	-0.658	0.007	1.76	0.57	-3.09	-3.42
0.2225	12.65	3.04	2.773	0.019	1.270	0.019	-0.008	0.009	-0.390	0.007	1.99	0.49	-2.86	-3.50
0.2275	12.65	3.00	2.576	0.025	0.852	0.008	-0.128	0.014	-0.716	0.013	1.79	0.07	-3.06	-3.91
0.2325	12.65	1.48	2.661	0.027	0.782	0.025	-0.124	0.013	-0.630	0.007	1.88	0.00	-2.98	-3.98
0.2375	12.65	1.45	2.646	0.023	2.019	0.011	-0.429	0.006	-1.092	0.006	1.86	1.23	-2.99	-2.75
0.2425	12.66	0.67	3.220	0.022	2.310	0.023	-0.238	0.013	-1.169	0.007	2.43	1.52	-2.42	-2.46
0.2475	12.66	1.27	4.139	0.021	3.109	0.020	0.009	0.007	-0.622	0.009	3.35	2.32	-1.50	-1.66
0.2525	18.55	6.74	3.731	0.009	3.380	0.012	-0.014	0.007	-0.543	0.016	2.05	1.70	-2.80	-2.28
0.2575	18.65	17.38	4.451	0.009	3.794	0.022	0.032	0.008	-0.395	0.011	2.77	2.11	-2.09	-1.87
0.2625	18.75	11.24	4.251	0.016	3.505	0.014	-0.028	0.006	-0.640	0.005	2.56	1.82	-2.29	-2.17
0.2675	18.84	10.96	4.131	0.019	4.016	0.007	0.003	0.012	-0.290	0.002	2.44	2.32	-2.41	-1.66
0.2725	18.94	10.79	4.135	0.031	3.745	0.021	-0.065	0.009	-0.469	0.012	2.44	2.05	-2.41	-1.93
0.2775	19.04	10.88	4.218	0.024	4.126	0.006	0.091	0.013	-0.521	0.008	2.52	2.43	-2.33	-1.55
0.2825	19.14	10.90	4.369	0.014	3.973	0.010	0.055	0.007	-0.488	0.009	2.67	2.28	-2.18	-1.70
0.2875	19.23	8.28	4.228	0.003	3.727	0.014	0.016	0.005	-0.648	0.005	2.53	2.03	-2.32	-1.95
0.2925	19.33	8.03	4.310	0.009	3.845	0.006	0.102	0.010	-0.584	0.008	2.62	2.15	-2.23	-1.83
0.2975	19.43	7.24	4.451	0.008	3.938	0.023	0.069	0.009	-0.872	0.001	2.76	2.25	-2.09	-1.73
0.3025	19.52	6.95	4.432	0.009	3.736	0.017	0.061	0.006	-0.767	0.013	2.75	2.05	-2.11	-1.93
0.3075	19.64	6.02	4.498	0.015	4.194	0.013	-0.032	0.015	-0.720	0.018	2.83	2.53	-2.02	-1.45
0.3125	19.77	6.51	4.367	0.023	4.194	0.019	0.055	0.014	-0.629	0.016	2.71	2.54	-2.14	-1.44
0.3175	19.89	6.65	4.540	0.014	4.031	0.010	-0.036	0.007	-0.705	0.004	2.91	2.40	-1.94	-1.58
0.3225	20.01	10.96	4.268	0.010	4.204	0.006	0.012	0.007	-0.739	0.011	2.66	2.59	-2.19	-1.39
0.3275	20.13	5.87	4.486	0.015	4.434	0.016	-0.001	0.006	-0.734	0.006	2.86	2.81	-1.99	-1.17
0.3325	20.25	7.37	4.473	0.018	3.912	0.013	-0.038	0.007	-0.841	0.009	2.84	2.28	-2.01	-1.70
0.3375	20.38	6.18	4.191	0.012	4.122	0.006	-0.011	0.008	-0.580	0.002	2.54	2.47	-2.31	-1.51
0.3425	20.50	6.44	4.270	0.017	4.063	0.007	-0.051	0.010	-0.689	0.006	2.61	2.40	-2.24	-1.58
0.3475	20.62	7.26	4.534	0.011	4.397	0.010	0.005	0.008	-0.599	0.006	2.87	2.74	-1.98	-1.25
0.3525	20.74	7.74	4.582	0.008	4.025	0.004	-0.018	0.011	-0.749	0.017	2.92	2.36	-1.93	-1.62
0.3575	20.86	9.08	4.471	0.011	4.108	0.015	-0.022	0.007	-0.496	0.008	2.80	2.44	-2.05	-1.54
0.3625	20.98	12.12	4.407	0.017	4.331	0.010	-0.058	0.003	-0.630	0.011	2.74	2.66	-2.11	-1.32
0.3675	21.11	12.47	4.498	0.014	3.918	0.015	-0.032	0.004	-0.311	0.006	2.84	2.26	-2.01	-1.72
0.3725	21.23	11.26	4.471	0.015	4.112	0.007	0.038	0.009	-0.514	0.004	2.83	2.47	-2.02	-1.51