Citation:

PANGAEA.961805

Name: Compositions of sedimentary organic matter of surface sediments in the northern South China Sea
Published: 2024-03-12
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Calcium Carbonate; Grain Size; mineral surface area (SA); radiocarbon isotope (Fm); Stable carbon isotope (δ13C); total organic carbon (TOC)

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Abstract:

This dataset includes total organic carbon (TOC), stable carbon isotope (δ13C), and radiocarbon activity (expressed as Fm) of TOC, as well as mineral surface area (SA), mean grain size, and calcium carbonate (CaCO3) of 89 surface sediment samples from the northern South China Sea. The samples were collected through the German R/V SONNE cruises SO50, SO72A, SO95, and SO132 during July–September 1987, October–November 1990, April–June 1994, and June–July 1998, respectively. TOC and stable carbon isotope (δ13C) of the decarbonated samples were measured by an elemental analyzer interfaced with an isotope ratio mass spectrometer (EA-IRMS; Flash EA 1112 HT-Delta V Advantage). The standard deviations of TOC content and δ13C were 0.03% and 0.08‰, respectively, by replicate measurements of the same acetanilide standard samples. Radiocarbon activity of carbonate free sediment were measured using a Mini Carbon Dating System (MICADAS) accelerated mass spectrometry at the Laboratory of Ion Beam Physics, ETH Zürich. Radiocarbon data are reported as "fraction modern" (Fm), representing the deviations of the 14C/12C ratio from 95% modern oxalic acid standard. The absolute error of Fm is better than ±0.01. The conventional radiocarbon ages are calculated based on the equation of t = –8033 ln (Fm), in years Before Present (yr BP, where present is 1950 AD). Organic-free mineral surface area (SA) was measured using a 5-point Brunauer-Emmett-Teller (BET) nitrogen adsorption method on NOVA 4000 SA analyzer (Quantachrome Instrument). The standard deviations of two reference minerals are 0.03 and 0.14 m2 g–1, respectively. The sample was then performed for mean grain size analysis using a laser Particle Size Analyzer (Malvern Mastersizer 2000). The calcium carbonate content of the samples was determined by a vacuum-gasometric system with a relative accuracy of ±0.7%.

Keyword(s):

Calcium Carbonate; Grain Size; mineral surface area (SA); radiocarbon isotope (Fm); Stable carbon isotope (δ13C); total organic carbon (TOC)

Supplement to:

Lin, Baozhi; Liu, Zhifei; Eglinton, Timothy Ian; Wiesner, Martin G; Blattmann, Thomas Michael; Haghipour, Negar (2024): Organic Carbon Sources in Surface Sediments on the Northern South China Sea. Journal of Geophysical Research: Biogeosciences, 129(4), e2023JG007909, https://doi.org/10.1029/2023JG007909

Funding:

National Natural Science Foundation of China (NSFC), grant/award no. 42106061, 42130407, 42188102

Swiss National Science Foundation (SNF), grant/award no. 200020_163162

Coverage:

Median Latitude: 18.829212 * Median Longitude: 116.255682 * South-bound Latitude: 12.893000 * West-bound Longitude: 112.525000 * North-bound Latitude: 21.854000 * East-bound Longitude: 119.973833

Date/Time Start: 1987-07-20T00:00:00 * Date/Time End: 1998-07-04T00:00:00

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.01 m

Event(s):

GIK17920-1 * Latitude: 14.585000 * Longitude: 119.751667 * Date/Time: 1994-04-16T00:00:00 * Elevation: -2507.0 m * Location: South China Sea * Campaign: (MONITOR MONSUN) * Basis: * Method/Device: Giant box corer (GKG)

GIK17921-1 * Latitude: 14.911667 * Longitude: 119.538333 * Date/Time: 1994-04-16T00:00:00 * Elevation: -2507.0 m * Location: South China Sea * Campaign: (MONITOR MONSUN) * Basis: * Method/Device: Giant box corer (GKG)

GIK17922-1 * Latitude: 15.416667 * Longitude: 117.458333 * Date/Time: 1994-04-17T00:00:00 * Elevation: -4221.0 m * Location: South China Sea * Campaign: (MONITOR MONSUN) * Basis: * Method/Device: Giant box corer (GKG)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Liu, Zhifei
2	Number	No		Liu, Zhifei
3	Sample code/label	Sample label		Liu, Zhifei
4	DEPTH, sediment/rock	Depth sed	m	Liu, Zhifei		Geocode
5	Depth, sediment/rock, top/minimum	Depth sed top	m	Liu, Zhifei
6	Depth, sediment/rock, bottom/maximum	Depth sed bot	m	Liu, Zhifei
7	Carbon, organic, total	TOC	%	Liu, Zhifei	Element analyser isotope ratio mass spectrometer (EA-IRMS)
8	δ13C, total organic carbon	δ13C TOC	‰ PDB	Liu, Zhifei
9	Activity of radiocarbon in percent of modern carbon	Activity	pMC	Liu, Zhifei	MICADAS Accelerator Mass Spectrometer
10	Minerals, surface area	MSA	m²/g	Liu, Zhifei	Surface area analyzer, Quantachrome Instrument, NOVA 4000 SA
11	Grain size, mean	Grain size mean	µm	Liu, Zhifei	Laser diffraction particle size analyser (Malvern Mastersizer 2000)
12	Calcium carbonate	CaCO3	%	Liu, Zhifei	Vacuum-gasometric

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

882 data points

Data

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

1 Event	2 No	3 Sample label	4 Depth sed [m]	6 Depth sed bot [m]	7 TOC [%]	8 δ13C TOC [‰ PDB]	9 Activity [pMC]	10 MSA [m²/g]	11 Grain size mean [µm]	12 CaCO3 [%]
SO50_KG-104	1	SCS-SO-50-KG-104	0.01	0.02	0.45	-22.2	0.78	14.04	12	5
SO50_KG-67	2	SCS-SO-50-KG-67	0.01	0.02	0.85	-21.9	0.80	18.46	8	9
SO50_KG-62	3	SCS-SO-50-KG-62	0.01	0.02	0.77	-21.7	0.76	16.72	9	10
SO50_KG-69	4	SCS-SO-50-KG-69	0.01	0.02	1.00	-22.1	0.78	17.44	9	10
SO50_KG-60	5	SCS-SO-50-KG-60	0.01	0.02	0.70	-21.8	0.80	14.07	13	12
SO50_KG-59	6	SCS-SO-50-KG-59	0.01	0.02	0.51	-21.4	0.76	14.30	13	16
SO50_KG-58	7	SCS-SO-50-KG-58	0.01	0.02	0.23	-21.8	0.75	4.19	34	16
SO50_KG-61	8	SCS-SO-50-KG-61	0.01	0.02	0.52	-20.2	0.78	11.55	10	18
SO50_KG-75	9	SCS-SO-50-KG-75	0.01	0.02	0.49	-21.9	0.76	11.97	16	21
SO50_KG-76	10	SCS-SO-50-KG-76	0.01	0.02	0.25	-22.1	0.77	4.47	30	20
SO50_KG-56	11	SCS-SO-50-KG-56	0.01	0.02	0.47	-21.6	0.77	8.44	17	17
SO50_KG-78	12	SCS-SO-50-KG-78	0.01	0.02	0.28	-22.0	0.70	8.93	35	62
SO50_KG-54	13	SCS-SO-50-KG-54	0.01	0.02	0.43	-21.5	0.77	6.72	35	18
SO50_KG-55	14	SCS-SO-50-KG-55	0.01	0.02	0.17	-21.9	0.67	4.21	55	14
SO50_KG-53	15	SCS-SO-50-KG-53	0.01	0.02	0.16	-21.7	0.68	4.02	82	19
SO50_KG-77	16	SCS-SO-50-KG-77	0.01	0.02	0.39	-22.0	0.81	6.16	22	27
SO50_KG-102	17	SCS-SO-50-KG-102	0.01	0.02	0.26	-22.8	0.75		51	32
SO50_KG-100	18	SCS-SO-50-KG-100	0.01	0.02	0.15	-23.1	0.63	10.25	161	31
SO50_KG-74	19	SCS-SO-50-KG-74	0.01	0.02	0.42	-21.8	0.74	9.61	25	29
SO50_KG-98	20	SCS-SO-50-KG-98	0.01	0.02	0.81	-21.6	0.77	10.34	12	30
SO50_KG-50	21	SCS-SO-50-KG-50	0.01	0.02	1.04	-21.3	0.78	14.12	8	26
SO50_KG-97	22	SCS-SO-50-KG-97	0.01	0.02	1.00	-22.0	0.82		16	37
SO50_KG-73	23	SCS-SO-50-KG-73	0.01	0.02	0.51	-22.7	0.71	18.94	7	34
SO50_KG-44	24	SCS-SO-50-KG-44	0.01	0.02	1.20	-21.4	0.80	19.66	7	24
SO50_KG-72	25	SCS-SO-50-KG-72	0.01	0.02	0.86	-21.6	0.75	23.15	7	24
SO50_KG-71	26	SCS-SO-50-KG-71	0.01	0.02	0.85	-21.4	0.72	25.04	5	26
SO50_KG-43	27	SCS-SO-50-KG-43	0.01	0.02	0.78	-21.5	0.71	24.29	6	28
SO50_KG-39	28	SCS-SO-50-KG-39	0.01	0.02	0.84	-21.8	0.74		5	26
SO50_KG-36	29	SCS-SO-50-KG-36	0.01	0.02	0.75	-21.5	0.74	28.50	6	27
SO50_KG-30	30	SCS-SO-50-KG-30	0.01	0.02	0.87	-21.6	0.67		5	5
SO50_KG-94	31	SCS-SO-50-KG-94	0.01	0.02	0.75	-21.2	0.57		5	9
SO50_KG-92	32	SCS-SO-50-KG-92	0.01	0.02	0.63	-22.0	0.49		5	0
SO72A_KG-17-1	33	SCS-SO-72A-KG-17-1	0.01	0.02	0.61	-21.3	0.75	9.72	14	15
SO72A_KG-15-1	34	SCS-SO-72A-KG-15-1	0.01	0.02	0.39	-21.5	0.72	6.90	31	16
SO72A_KG-18-1	35	SCS-SO-72A-KG-18-1	0.01	0.02	0.55	-21.4	0.73	9.59	17	16
SO72A_KG-16-1	36	SCS-SO-72A-KG-16-1	0.01	0.02	0.37	-21.5	0.71	5.64	36	16
SO72A_KG-14-1	37	SCS-SO-72A-KG-14-1	0.01	0.02	0.15	-21.9	0.56	7.69	100	22
SO72A_KG-13-1	38	SCS-SO-72A-KG-13-1	0.01	0.02	0.17	-22.3	0.56	9.56	50	32
SO72A_KG-12-1	39	SCS-SO-72A-KG-12-1	0.01	0.02	0.12	-22.6	0.50	30.69	118	20
SO72A_KG-10B-1	40	SCS-SO-72A-KG-10B-1	0.01	0.02	0.21	-21.6		19.94	40	59
SO72A_KG-9-1	41	SCS-SO-72A-KG-9-1	0.01	0.02	0.21	-22.6	0.64	7.18	210	80
SO72A_KG-19-1	42	SCS-SO-72A-KG-19-1	0.01	0.02	0.52	-21.7	0.17	22.01	7	32
SO72A_KG-8-1	43	SCS-SO-72A-KG-8-1	0.01	0.02	0.46	-21.9	0.14	19.02	9	29
SO72A_KG-3-1	44	SCS-SO-72A-KG-3-1	0.01	0.02	0.81	-21.2	0.80	12.22	10	43
SO72A_KG-2-1	45	SCS-SO-72A-KG-2-1	0.01	0.02	0.11	-24.1	0.47		50	91
SO72A_KG-4-1	46	SCS-SO-72A-KG-4-1	0.01	0.02	0.73	-21.2	0.76	14.78	10	35
GIK17942-1	47	SCS-SO-95-24-17942-1	0.01	0.01	0.30	-21.6	0.66	6.64	22	48
GIK17929-1	48	SCS-SO-95-10-17929-1	0.01	0.01	0.22	-21.4	0.70	8.20	18	19
GIK17930-1	49	SCS-SO-95-11-17930-1	0.01	0.01	0.44	-21.1	0.70	6.77	13	38
GIK17943-1	50	SCS-SO-95-25-17943-1	0.01	0.01	0.63	-21.5	0.68	14.62	8	30
GIK17931-1	51	SCS-SO-95-12-17931-1	0.01	0.01	0.40	-21.2	0.68	10.19	12	49
GIK17944-1	52	SCS-SO-95-26-17944-1	0.01	0.01	0.48	-21.1	0.72	10.21	6	53
GIK17932-1	53	SCS-SO-95-13-17932-1	0.01	0.01	0.64	-21.4	0.69	23.25	7	23
GIK17940-1	54	SCS-SO-95-21-17940-1	0.01	0.01	0.91	-20.7	0.64	18.44	7	15
GIK17933-2	55	SCS-SO-95-14-17933-2	0.01	0.01	0.62	-21.7	0.67	16.73	6	26
GIK17949-1	56	SCS-SO-95-31-17949-1	0.01	0.01	0.42	-20.9	0.72	15.07	9	55
GIK17941-1	57	SCS-SO-95-22-17941-1	0.01	0.01	0.62	-23.1	0.57	16.31	5	12
GIK17945-1	58	SCS-SO-95-27-17945-1	0.01	0.01	0.53	-21.0	0.68	17.13	6	31
GIK17920-1	59	SCS-SO-95-01-17920-1	0.01	0.01	0.07	-22.4	0.85	2.14	16	0
GIK17921-1	60	SCS-SO-95-02-17921-1	0.01	0.01	0.12	-21.8	0.90	4.14	19	0
GIK17934-1	61	SCS-SO-95-15-17934-1	0.01	0.01	0.58	-21.2	0.66	23.01	5	23
GIK17927-1	62	SCS-SO-95-08-17927-1	0.01	0.01	0.50	-22.1	0.87	19.82	12	0
GIK17938-1	63	SCS-SO-95-19-17938-1	0.01	0.01	0.59	-21.3	0.64	22.61	5	9
GIK17948-1	64	SCS-SO-95-30-17948-1	0.01	0.01	0.46	-20.9	0.71	23.31	6	41
GIK17952-1	65	SCS-SO-95-34-17952-1	0.01	0.01	0.46	-21.1	0.68	19.67	5	40
GIK17935-2	66	SCS-SO-95-16-17935-2	0.01	0.01	0.71	-20.9	0.64	22.47	6	12
GIK17937-1	67	SCS-SO-95-18-17937-1	0.01	0.01	0.62	-21.3	0.62	33.49	5	0
GIK17946-1	68	SCS-SO-95-28-17946-1	0.01	0.01	0.56	-20.7	0.61	23.81	7	8
GIK17925-2	69	SCS-SO-95-06-17925-2	0.01	0.01	0.56	-20.9	0.69	28.79	5	7
GIK17924-1	70	SCS-SO-95-05-17924-1	0.01	0.01	0.57	-21.0	0.64	36.84	5	0
GIK17926-2	71	SCS-SO-95-07-17926-2	0.01	0.01	0.45	-22.0	0.42	25.17	7	0
GIK17947-2	72	SCS-SO-95-29-17947-2	0.01	0.01	0.47	-21.1	0.54	32.80	7	2
GIK17936-1	73	SCS-SO-95-17-17936-1	0.01	0.01	0.52	-21.0	0.59	37.01	5	0
GIK17922-1	74	SCS-SO-95-03-17922-1	0.01	0.01	0.17	-21.4	0.67	22.10	14	0
SO132_34-1	75	SO-132-34-1	0.01	0.02	0.42	-20.2	0.75	24.62	9	34
SO132_36-1	76	SO-132-36-1	0.01	0.02	0.49	-19.7	0.79	17.77	13	6
SO132_38-1	77	SO-132-38-1	0.01	0.02	0.53	-19.0	0.79	19.61	10	12
SO132_37-1	78	SO-132-37-1	0.01	0.02	0.62	-19.8	0.80	26.74	9	47
SO132_35-1	79	SO-132-35-1	0.01	0.02	0.55	-21.0	0.72	17.39	15	4
SO132_32-1	80	SO-132-32-1	0.01	0.02	0.38	-20.4	0.72	32.48	9	5
SO132_33-1	81	SO-132-33-1	0.01	0.02	0.59	-19.6	0.50	26.55	10	36
SO132_31-1	82	SO-132-31-1	0.01	0.02	0.50	-19.6	0.43	43.35	10	9
SO132_30-1	83	SO-132-30-1	0.01	0.02	0.38	-20.4	0.73	39.95	10	0
SO132_29-1	84	SO-132-29-1	0.01	0.02	0.30	-20.4	0.69	35.21	11	0
SO132_16-2	85	SO-132-16-2	0.01	0.02	0.30	-20.8	0.55	34.76	9	0
SO132_11-2	86	SO-132-11-2	0.01	0.02	0.14	-21.5	0.41	37.55	10	0
SO132_27-1	87	SO-132-27-1	0.01	0.02	0.47	-19.5	0.39	43.85	7	4
SO132_7-2	88	SO-132-7-2	0.01	0.02	0.42	-21.4	0.53	46.77	6	0
SO132_15-2	89	SO-132-15-2	0.01	0.02	0.50	-21.4	0.46	40.99	5	0