Citation:

PANGAEA.949618

Name: U-series ages and Neodymium isotopic compositions of late Quaternary populations of Desmophyllum dianthus from Orphan Knoll and Flemish Cap, south-eastern Labrador Sea
Published: 2022-10-12
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Bølling-Allerød; deep corals; Desmophyllum dianthus; Holocene; Labrador Sea; marine isotope stage 7a

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Abstract:

The data sets include U-series and Neodymium isotope measurements in modern (n = 6) and fossil (n = 24) deep-coral (Desmophyllum dianthus) assemblages raised from the Orphan Knoll and Flemish cap area, southeastern Labrador Sea, during the CCGS Hudson-2010-029 cruise using the tethered Canadian ROPOS ROV, complemented with a single colony from a rock dredge recovery during the CSS Hudson 78-020 expedition. Fossil specimens age clusters are : the mid to late Holocene, the Bølling-Allerød (the single colony), MIS 5c, MIS 7a. Details about the U-series measurements can be found in Maccali et al. (2020). Nd-isotope measurements were reported during the 2015 Goldschmidt Conference by Ménabréaz et al. ( 2015). Low eNd-values point to intervals with a strong imprint of detrital particulate fluxes from the Greenland and Canadian Precambrian basements on the intermediate water mass of the Labrador Sea (~ 1600-2200 m). The more radiogenic end-member (eNd ~ -13.5) corresponds to the modern-like signature of the North-Atlantic Deep Sea Water.

Keyword(s):

Bølling-Allerød; deep corals; Desmophyllum dianthus; Holocene; Labrador Sea; marine isotope stage 7a

Further details:

Maccali, Jenny; Hillaire-Marcel, Claude; Menabreaz, Lucie; Ghaleb, Bassam; Blénet, Aurélien; Edinger, Evan; Hélie, Jean-François; Preda, Michel (2020): Late Quaternary sporadic development of Desmophyllum dianthus deep-coral populations in the southern Labrador Sea with specific attention to their 14C- and 230Th-dating. Marine Chemistry, 224, 103807, https://doi.org/10.1016/j.marchem.2020.103807

Menabreaz, Lucie; Maccali, Jenny; Blénet, Aurélien; Ghaleb, Bassam; Poirier, André; Edinger, Evan; Hillaire-Marcel, Claude (2015): Neodymium Isotopic Composition of Deep-Sea Corals from the Labrador Sea: Implications for NW Atlantic Deepwater Circulation during the Holocene, Bølling-Allerød, MIS 5c and 7a. Goldschmidt Abstracts, 2101

Ruffman, A (2014): Comment on 'Bioerosion and micritization in the deep sea coral Desmophyllum cristagalli ' by C.M. Boerboom, J.E. Smith, and M.J. Risk. Historical Biology, 26(5), 690-690, https://doi.org/10.1080/08912963.2013.835807

Funding:

Natural Sciences and Engineering Research Council (NSERC), grant/award no. 372557-09: Geology, biogeography and genetic connectivity of deep-sea corals in the Orphan Knoll, Orphan Basin, and Flemish Pass areas

Natural Sciences and Engineering Research Council (NSERC), grant/award no. RGPIN-2018-05031: Merging the Arctic paleoceanography into the Earth's global climate/ocean history

Coverage:

Median Latitude: 49.056833 * Median Longitude: -45.683167 * South-bound Latitude: 46.334000 * West-bound Longitude: -46.194000 * North-bound Latitude: 50.555000 * East-bound Longitude: -44.549000

Date/Time Start: 1978-07-11T07:09:00 * Date/Time End: 1978-07-11T07:09:00

Minimum ELEVATION: -2216 m a.s.l. * Maximum ELEVATION: -1610 m a.s.l.

Event(s):

HU78-020-001 (HUD78-020-001) * Latitude: 50.550000 * Longitude: -46.193000 * Date/Time: 1978-07-11T07:09:00 * Elevation: -1628.0 m * Campaign: * Basis: Hudson * Method/Device: Dredge (DRG)

HU2010-029-R1335-04 (HUD2010-029-R1335-4) * Latitude: 46.419000 * Longitude: -44.818000 * Elevation: -1808.0 m * Campaign: * Basis: Hudson * Method/Device: Remote operated platform for oceanography (ROPOS)

HU2010-029-R1335-13 (HUD2010-029-R1335-13) * Latitude: 46.427000 * Longitude: -44.826000 * Elevation: -1610.0 m * Campaign: * Basis: Hudson * Method/Device: Remote operated platform for oceanography (ROPOS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Edinger, Evan
2	Sample code/label	Sample label		Edinger, Evan
3	Stage	Stage		Edinger, Evan
4	Comment	Comment		Edinger, Evan
5	Site	Site		Edinger, Evan
6	Location	Location		Edinger, Evan
7	LATITUDE	Latitude		Edinger, Evan		Geocode
8	LONGITUDE	Longitude		Edinger, Evan		Geocode
9	ELEVATION	Elevation	m a.s.l.	Edinger, Evan		Geocode
10	Aragonite	Arg	%	Hillaire-Marcel, Claude
11	Laboratory code/label	Lab label		Hillaire-Marcel, Claude		14C Lab code
12	Age, dated	Age dated	ka	Hillaire-Marcel, Claude	Age, 14C AMS	Libby's age
13	Age, dated standard error	Age std e	±	Hillaire-Marcel, Claude	Age, 14C AMS	1σ
14	Calendar age	Cal age	ka BP	Hillaire-Marcel, Claude
15	Calendar age, standard error	Cal age std e	±	Hillaire-Marcel, Claude		1σ
16	δ13C, carbonate	δ13C carb	‰ PDB	Hillaire-Marcel, Claude
17	δ18O, carbonate	δ18O carb	‰ PDB	Hillaire-Marcel, Claude
18	Thorium-230/Uranium-238 activity ratio	(230Th/238U)		Maccali, Jenny
19	Thorium-230/Uranium-238 activity ratio, standard error	(230Th/238U) std e	±	Maccali, Jenny		2σ
20	Uranium-234/Uranium-238 activity ratio	(234U/238U)		Maccali, Jenny
21	Uranium-234/Uranium-238 activity ratio, standard error	(234U/238U) std e	±	Maccali, Jenny		2σ
22	Age, dated	Age dated	ka	Maccali, Jenny	Age, Thorium corrected
23	Age, dated standard error	Age std e	±	Maccali, Jenny	Age, Thorium corrected	2σ
24	δ234 Uranium (0)	δ234U (0)	‰	Maccali, Jenny
25	δ234 Uranium (0), standard error	δ234U (0) std e	±	Maccali, Jenny		2σ
26	Neodymium-143/Neodymium-144 ratio	143Nd/144Nd		Menabreaz, Lucie
27	Neodymium-143/Neodymium-144 ratio, standard error	143Nd/144Nd std e	±	Menabreaz, Lucie		1σ
28	Neodymium-143/Neodymium-144 ratio	143Nd/144Nd		Menabreaz, Lucie	calibrated
29	Neodymium-143/Neodymium-144 ratio, standard error	143Nd/144Nd std e	±	Menabreaz, Lucie	calibrated	2σ
30	ε-Neodymium	ε-Nd		Menabreaz, Lucie
31	ε-Neodymium, standard error	ε-Nd std e	±	Menabreaz, Lucie		2σ

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

788 data points

Data

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

1 Event	2 Sample label	3 Stage	4 Comment	5 Site	6 Location	7 Latitude	8 Longitude	9 Elevation [m a.s.l.]	10 Arg [%]	11 Lab label (14C Lab code)	12 Age dated [ka] (Libby's age, Age, 14C AMS)	13 Age std e [±] (1σ, Age, 14C AMS)	14 Cal age [ka BP]	15 Cal age std e [±] (1σ)	16 δ13C carb [‰ PDB]	17 δ18O carb [‰ PDB]	18 (230Th/238U)	19 (230Th/238U) std e [±] (2σ)	20 (234U/238U)	21 (234U/238U) std e [±] (2σ)	22 Age dated [ka] (Age, Thorium corrected)	23 Age std e [±] (2σ, Age, Thorium corrected)	24 δ234U (0) [‰]	25 δ234U (0) std e [±] (2σ)	26 143Nd/144Nd	27 143Nd/144Nd std e [±] (1σ)	28 143Nd/144Nd (calibrated)	29 143Nd/144Nd std e [±] (2σ, calibrated)	30 ε-Nd	31 ε-Nd std e [±] (2σ)
HU2010-029-R1343-12	R-1343-12 #D24-1	live-collected		OK	Orphan Knoll	50.552	-46.194	-1722	100.0	SacA-1782	0.540	0.030	0.546	0.049	-7.27	0.52	0.00290	0.00001	1.154	0.002	0.06	0.1	154	2	0.511929	0.000012	0.5119487	0.000031	-13.45	0.49
HU2010-029-R1335-04	R-1335-04 #D57	live-collected		FC	Flemish Cap	46.419	-44.818	-1808	100.0	UOC-2914	0.592	0.035	0.603	0.046	-3.74	2.24	0.00443	0.00004	1.154	0.001	<0.00				0.511941	0.000003	0.5119317	0.000009	-13.78	0.30
HU2010-029-R1335-04	R-1335-04 #D56	live-collected		FC	Flemish Cap	46.419	-44.818	-1808	95.9	SacA-1778	0.455	0.030	0.511	0.011	-7.23	0.35	0.00467	0.00007	1.195	0.007	<0.00				0.511896	0.000008	0.5119088	0.000020	-14.22	0.39
HU2010-029-R1343-02	R-1343-02 #D60	live-collected		OK	Orphan Knoll	50.555	-46.171	-1807	100.0	UCO-2917	0.751	0.035	0.688	0.018			0.00500	0.00003	1.155	0.007	0.10	0.1	155	7	0.511901	0.000049	0.5119558	0.000104	-13.31	0.26
HU2010-029-R1336-26	R-1336-26 #D58	live-collected		FC	Flemish Cap	46.334	-44.549	-2216	100.0	SacA-1772	0.630	0.025	0.597	0.047	-5.03	1.43	0.00588	0.00006	1.151	0.005	0.09	0.1	151	5	0.511924	0.000006	0.5119400	0.000018	-13.60	0.40
HU2010-029-R1336-26	R-1336-26 #D59	live-collected		FC	Flemish Cap	46.334	-44.549	-2216	100.0	UOC-1198	0.833	0.062	0.757	0.056	-2.82	2.42	0.00721	0.00009	1.154	0.002	0.03	0.2	154	2	0.511928	0.000006	0.5119183	0.000014	-14.04	0.26
HU2010-029-R1343-16	R-1343-16 #D22a	Holocene		OK	Orphan Knoll	50.552	-46.194	-1740	95.6	UOC-2913	0.601	0.035	0.603	0.046	-6.21	1.09	0.00180	0.00000	1.152	0.003	<0.00				0.511912	0.000007	0.5119016	0.000017	-14.36	0.33
HU2010-029-R1343-16	R-1343-16 #D22b	Holocene		OK	Orphan Knoll	50.552	-46.194	-1740																	0.511912	0.000030	0.5119064	0.000068	-14.30	1.30
HU2010-029-R1336-27	R-1336-27 #D121-1	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1203	0.849	0.035	0.757	0.033	-2.84	2.52	0.00660	0.00010	1.143	0.002	0.02	0.1	143	2	0.511912	0.000003	0.5119383	0.000007	-13.65	0.27
HU2010-029-R1336-27	R-1336-27 #D122	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1204	1.401	0.052	1.317	0.033	-2.76	2.42	0.01230	0.00070	1.151	0.004	0.84	0.1	151	4	0.511912	0.000009	0.5119165	0.000023	-14.07	0.44
HU2010-029-R1343-12	R-1343-12 #D18	Holocene		OK	Orphan Knoll	50.552	-46.194	-1746	100.0	SacA-1773	1.055	0.035	0.962	0.026	-1.46	3.01	0.01590	0.00020	1.147	0.005	0.37	0.3	147	5	0.511912	0.000007	0.5119433	0.000021	-13.55	0.31
HU2010-029-R1343-12	R-1343-12 #D18-R	Holocene	R = replicated chemical extractions and measurements performed on the same individual sample.	OK	Orphan Knoll	50.552	-46.194	-1746																	0.511912	0.000021	0.5119462	0.000042	-13.50	0.80
HU2010-029-R1336-27	R-1336-27 #D115-1	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1199	1.786	0.041	1.709	0.091	-3.07	2.24	0.01960	0.00020	1.149	0.002	0.94	0.2	149	2	0.511893	0.000004	0.5119196	0.000009	-14.01	0.27
HU2010-029-R1336-27	R-1336-27 #D118-2	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1201	1.451	0.044	1.345	0.035	-3.27	2.37	0.01630	0.00030	1.156	0.016	<0.00				0.511912	0.000003	0.5119269	0.000009	-13.87	0.32
HU2010-029-R1343-22	R-1343-22 #D49	Holocene		OK	Orphan Knoll	50.552	-46.193	-1740		UOC-1205	2.560	0.035	2.712	0.039	-5.79	1.23	0.02490	0.00020	1.156	0.002	1.94	0.1	156	2	0.511912	0.000008	0.5118739	0.000025	-14.90	0.36
HU2010-029-R1336-27	R-1336-27 #D116	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1200	3.839	0.058	4.317	0.082	-2.07	2.58	0.04290	0.00060	1.153	0.002	3.34	0.2	154	2	0.511890	0.000004	0.5119025	0.000015	-14.35	0.27
HU2010-029-R1336-27	R-1336-27 #D116-R	Holocene	R = replicated chemical extractions and measurements performed on the same individual sample.	FC	Flemish Cap	46.427	-44.826	-1610							-2.79	2.08									0.511912	0.000003	0.5119119	0.000018	-14.16	0.30
HU2010-029-R1335-13	R-1335-13 #D114	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1197	4.622	0.048	5.391	0.078	-5.55	1.17	0.05410	0.00050	1.150	0.002	4.25	0.2	152	2	0.511805	0.000004	0.5118296	0.000009	-15.77	0.27
HU2010-029-R1343-22	R-1343-22 #D13	Holocene		OK	Orphan Knoll	50.552	-46.193	-1740	100.0	SacA-1776	5.455	0.045	6.251	0.045	-3.07	2.19	0.06070	0.00030	1.166	0.005	4.38	0.4	169	5	0.511912	0.000008	0.5118052	0.000022	-16.24	0.32
HU2010-029-R1335-13	R-1335-13 #D113a	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1196	4.563	0.050	5.193	0.185	-6.50	1.14	0.06100	0.00300	1.151	0.002	4.69	0.4	153	2	0.511730	0.000006	0.5117545	0.000013	-17.23	0.27
HU2010-029-R1336-27	R-1336-27 #D120	Holocene		FC	Flemish Cap	46.427	-44.826	-1610		UOC-1202	8.024	0.162	8.903	0.228	-3.42	2.43	0.08700	0.00100	1.146	0.006	7.67	0.3	150	6	0.511912	0.000004	0.5117171	0.000010	-17.96	0.32
HU78-020-001	HU-78-020-001	Bølling-Allerød	Position from: Ruffman, A. (2014)	OK	Orphan Knoll	50.550	-46.193	-1628		UOC-1206	12.208	0.073	14.294	0.176			0.14220	0.00030	1.151	0.003	13.18	0.3	157	3	0.511912	0.000011	0.5119079	0.000029	-14.24	0.46
HU2010-029-R1343-09	R-1343-09 #D4-1	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740							-5.09	2.23	0.69500	0.00130	1.120	0.003	102.56	0.6	161	4	0.511445	0.000005	0.5114994	0.000011	-22.20	0.30
HU2010-029-R1343-21	R-1343-21 #D8	MIS 5c		OK	Orphan Knoll	50.552	-46.194	-1746									0.70970	0.00170	1.120	0.002	105.92	0.6	162	3	0.511611	0.000004	0.5116219	0.000013	-19.80	0.27
HU2010-029-R1343-21	R-1343-21 #D8-R	MIS 5c	R = replicated chemical extractions and measurements performed on the same individual sample.	OK	Orphan Knoll	50.552	-46.194	-1746																	0.511618	0.000003	0.5116232	0.000016	-19.80	0.27
HU2010-029-R1343-22	R-1343-22 #D15	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740	100.0	SacA-1783	>44.100		>44.100		-4.84	2.03	0.69070	0.00110	1.120	0.002	101.26	0.5	159	3	0.511494	0.000010	0.5115134	0.000026	-21.90	0.50
HU2010-029-R1343-22	R-1343-22 #D17	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740			>44.100		>44.100		-4.85	2.33	0.69450	0.00220	1.115	0.004	102.82	0.9	154	5	0.511450	0.000005	0.5114828	0.000014	-22.50	0.30
HU2010-029-R1343-22	R-1343-22 #D47	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740	100.0	SacA-1786	>40.600		>40.600		-4.50	2.26	0.70340	0.00220	1.115	0.002	104.71	0.7	154	2	0.511389	0.000008	0.5114089	0.000022	-24.00	0.40
HU2010-029-R1343-22	R-1343-22 #D48	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740									0.71440	0.00160	1.115	0.003	107.73	0.7	156	4	0.511396	0.000004	0.5114283	0.000012	-23.60	0.30
HU2010-029-R1343-22	R-1343-22 #D66	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740	97.4						-4.80	2.10	0.70500	0.00170	1.122	0.005	104.43	0.9	163	6	0.511462	0.000004	0.5114914	0.000013	-22.40	0.30
HU2010-029-R1343-22	R-1343-22 #D69	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740							-3.40	2.80	0.72220	0.00120	1.113	0.002	109.82	0.7	153	3	0.511463	0.000005	0.5114931	0.000015	-22.30	0.30
HU2010-029-R1343-22	R-1343-22 #D86	MIS 5c		OK	Orphan Knoll	50.552	-46.193	-1740									0.71130	0.00140	1.114	0.002	106.98	0.6	153	3	0.511528	0.000002	0.5115583	0.000009	-21.10	0.30
HU2010-029-R1343-17	R-1343-17 #D106	MIS 5c		OK	Orphan Knoll	50.552	-46.194	-1740							-5.17	1.51	0.70390	0.00250	1.116	0.005	105.08	1.0	157	6	0.511288	0.000006	0.5113126	0.000016	-25.90	0.30
HU2010-029-R1343-17	R-1343-17 #D107-4	MIS 5c		OK	Orphan Knoll	50.552	-46.194	-1740	100.0						-6.21	1.80	0.70380	0.00200	1.123	0.002	103.93	0.6	165	3	0.511597	0.000006	0.5116216	0.000017	-19.80	0.30
HU2010-029-R1343-22	R-1343-22 #D5	MIS 7a		OK	Orphan Knoll	50.552	-46.193	-1740	100.0	SacA-1777	>40.600		>40.600				0.91120	0.00270	1.090	0.003	186.66	2.4	151	5	0.511722	0.000012	0.5117415	0.000030	-17.50	0.60
HU2010-029-R1343-22	R-1343-22 #D5-R	MIS 7a	R = replicated chemical extractions and measurements performed on the same individual sample.	OK	Orphan Knoll	50.552	-46.193	-1740									0.90310	0.00750	1.094	0.006	180.62	5.0	155	10	0.511676	0.000003	0.5117082	0.000010	-18.10	0.30
	Reference (BOA)																								0.511888	0.000011	0.5119079	0.000029	-14.20	0.60