Citation:

PANGAEA.949846

Name: Uranium-Thorium series of sediment core Arc7-E25
Published: 2022-10-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: 14C age; 230Th excess; Arctic Ocean; grain size distribution; mineralogy; total organic carbon (TOC)

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Keyword(s):

14C age; 230Th excess; Arctic Ocean; grain size distribution; mineralogy; total organic carbon (TOC)

Related to:

Song, Tengfei; Hillaire-Marcel, Claude; de Vernal, Anne; Liu, Yanguang (2024): A resilient ice cover over the southernmost Mendeleev Ridge during the late Quaternary. Boreas, 53(1), 106-123, https://doi.org/10.1111/bor.12632

Coverage:

Latitude: 79.000000 * Longitude: 179.400000

Date/Time Start: 2016-07-15T00:00:00 * Date/Time End: 2016-07-15T00:00:00

Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 1.625 m

Event(s):

Arc7-E25 (E25) * Latitude: 79.000000 * Longitude: 179.400000 * Date/Time: 2016-07-15T00:00:00 * Elevation: -1200.0 m * Recovery: 3.2 m * Location: Mendeleev Ridge, Arctic Ocean * Campaign: * Basis: Xue Long * Method/Device: Gravity corer (GC)

Comment:

*230Thxs is calculated by the subtraction of mean activity value of 234U from the total 230Th.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Song, Tengfei		Geocode
2	Uranium-238	238U	mg/kg	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	given in ppm
3	Uranium-238, standard deviation	238U std dev	±	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	2σ
4	Thorium-232	232Th	mg/kg	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	given in ppm
5	Thorium-232, standard deviation	232Th std dev	±	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	2σ
6	Uranium-234/Uranium-238 activity ratio	(234U/238U)		Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma
7	Uranium-234/Uranium-238 activity ratio, standard deviation	(234U/238U) std dev	±	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	2σ
8	Thorium-230	230Th	dpm/g	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma
9	Thorium-230, standard deviation	230Th std dev	±	Song, Tengfei	Multi-Collector ICP-MS (MC-ICP-MS), Nu Plasma	2σ
10	Thorium-230 excess	230Th xs	dpm/g	Song, Tengfei	Calculated	*
11	Thorium-230 excess, standard deviation	230Th xs std dev	±	Song, Tengfei		2σ

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

260 data points

Data

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

1 Depth sed [m]	2 238U [mg/kg]	3 238U std dev [±]	4 232Th [mg/kg]	5 232Th std dev [±]	6 (234U/238U)	7 (234U/238U) std dev [±]	8 230Th [dpm/g]	9 230Th std dev [±]	10 230Th xs [dpm/g]	11 230Th xs std dev [±]
0.015	1.78	0.02	8.86	0.07	1.03	0.02	5.80	0.04	4.52	0.12
0.055	1.78	0.01	9.27	0.08	1.01	0.01	4.78	0.05	3.49	0.12
0.105	1.77	0.02	10.83	0.09	1.00	0.01	3.80	0.03	2.52	0.12
0.155	1.79	0.02	11.11	0.11	1.00	0.01	6.32	0.05	5.03	0.12
0.205	1.98	0.02	12.21	0.11	1.03	0.01	13.55	0.11	12.26	0.16
0.225	1.75	0.02	10.12	0.11	1.03	0.02	10.80	0.12	9.51	0.17
0.255	1.74	0.02	10.70	0.10	1.03	0.01	6.38	0.07	5.09	0.13
0.295	1.88	0.02	10.62	0.11	1.02	0.01	6.42	0.06	5.13	0.12
0.385	1.77	0.02	8.81	0.12	1.04	0.01	3.78	0.05	2.50	0.12
0.505	1.82	0.01	8.43	0.07	0.95	0.01	1.90	0.03	0.61	0.12
0.585	1.81	0.02	11.22	0.10	0.97	0.01	2.34	0.02	1.05	0.11
0.705	1.64	0.01	10.31	0.09	1.00	0.01	2.37	0.02	1.09	0.11
0.745	1.70	0.01	9.59	0.08	1.00	0.00	2.64	0.02	1.36	0.11
0.825	1.77	0.01	11.52	0.09	0.99	0.00	3.55	0.03	2.26	0.11
0.865	1.75	0.01	10.21	0.07	0.96	0.00	2.89	0.02	1.60	0.11
0.905	1.64	0.01	7.81	0.06	0.96	0.01	1.48	0.01	0.20	0.11
0.945	1.79	0.01	9.90	0.09	1.02	0.00	4.34	0.02	3.05	0.11
0.985	1.63	0.01	9.36	0.09	1.04	0.01	3.08	0.03	1.80	0.11
1.025	1.63	0.01	9.21	0.06	1.01	0.00	2.41	0.01	1.12	0.11
1.065	1.50	0.01	8.64	0.07	1.00	0.01	1.76	0.02	0.47	0.11
1.145	1.38	0.01	9.05	0.07	0.97	0.01	1.29	0.02	0.00	0.11
1.225	1.53	0.01	10.05	0.09	0.96	0.00	1.60	0.01	0.31	0.11
1.305	1.85	0.01	11.01	0.07	1.01	0.01	2.87	0.01	1.59	0.11
1.385	1.66	0.01	9.80	0.16	1.03	0.01	1.84	0.01	0.56	0.11
1.505	1.77	0.01	11.07	0.10	0.93	0.00	1.49	0.01	0.20	0.11
1.625	1.63	0.01	9.31	0.08	1.12	0.00	1.86	0.01	0.58	0.11