Citation:

PANGAEA.935279

Name: Radiocarbon isotope data of carbonates and non-carbonate carbon from the southern wall of the Atlantis Massif, IODP Expedition 357
Published: 2021-08-26
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Atlantis Massif; Carbon cycle; Clumped isotopes; IODP; radiocarbon ages; Stable carbon and oxygen isotopes

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Abstract:

The radiocarbon isotope data of aragonite, calcite, and dolomite veins and whole-rock total carbon and total non-carbonate carbon from serpentinized peridotites recovered during IODP Expedition 357 (October to December 2015) from the Atlantis Massif, Mid-Atlantic Ridge was examined to characterize carbon sources and the fate of dissolved organic (DOC) and inorganic carbon (DIC) in seawater during long-lived hydrothermal circulation and serpentinization. The measurements were performed at the ETH Zurich from 2017 to 2020 using an Elemental Analyzer interfaced to a MICADAS Accelerator Mass Spectrometer (AMS) equipped with a gas-ion source or by direct injection of CO2, from carbonate dissolution, into the ion source of the AMS

Keyword(s):

Atlantis Massif; Carbon cycle; Clumped isotopes; IODP; radiocarbon ages; Stable carbon and oxygen isotopes

Related to:

Ternieten, Lotta; Früh-Green, Gretchen L; Bernasconi, Stefano M (in review): Carbon geochemistry of the Atlantis Massif (IODP Expedition 357): Implications for carbonation of mantle peridotites. Earth and Space Science Open Archive (ESSOAr), https://doi.org/10.1002/essoar.10506361.1

Ternieten, Lotta; Früh-Green, Gretchen L; Bernasconi, Stefano M (in review): Carbonation of mantle peridotites at the Atlantis Massif: Insights from IODP Expedition 357. Earth and Space Science Open Archive (ESSOAr), https://doi.org/10.1002/essoar.10506362.1

Project(s):

Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)

Coverage:

Median Latitude: 30.129442 * Median Longitude: -42.128282 * South-bound Latitude: 30.127020 * West-bound Longitude: -42.153300 * North-bound Latitude: 30.132400 * East-bound Longitude: -42.117750

Date/Time Start: 2015-11-06T00:00:00 * Date/Time End: 2015-11-17T00:00:00

Minimum DEPTH, sediment/rock: 0.61 m * Maximum DEPTH, sediment/rock: 14.47 m

Event(s):

357-M0069A (AM-06A) * Latitude: 30.132400 * Longitude: -42.120030 * Date/Time Start: 2015-11-06T00:00:00 * Date/Time End: 2015-11-08T00:00:00 * Elevation: -850.9 m * IGSN: IBCR0357EHA0001 * Location: Atlantis Massif * Campaign: * Basis: * Comment: RD2, CTD: 30 7.985N / 42 7.218W; back on deck 10:30; MeBo launched 12:26, failed, back on deck 15:00; launch RD2 at midnight

357-M0071A (AM-04A) * Latitude: 30.128450 * Longitude: -42.153300 * Date/Time Start: 2015-11-09T00:00:00 * Date/Time End: 2015-11-10T00:00:00 * Elevation: -1390.8 m * IGSN: IBCR0357EHE0001 * Location: Atlantis Massif * Campaign: * Basis: * Comment: MeBo, CTD: 30 7.702N / 42 9.208W

357-M0072B (AM-01A) * Latitude: 30.129900 * Longitude: -42.122050 * Date/Time Start: 2015-11-10T00:00:00 * Date/Time End: 2015-11-12T00:00:00 * Elevation: -820.3 m * IGSN: IBCR0357EHG0001 * Location: Atlantis Massif * Campaign: * Basis: * Comment: RD2, Packer

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Ternieten, Lotta
2	Date/Time of event	Date/Time		Ternieten, Lotta
3	Latitude of event	Latitude		Ternieten, Lotta
4	Longitude of event	Longitude		Ternieten, Lotta
5	Sample code/label	Sample label		Ternieten, Lotta	DSDP/ODP/IODP sample designation
6	Depth, top/min	Depth top	m	Ternieten, Lotta		In meters below seafloor (mbsf)
7	Depth, bottom/max	Depth bot	m	Ternieten, Lotta		In meters below seafloor (mbsf)
8	DEPTH, sediment/rock	Depth sed	m	Ternieten, Lotta		Geocode – In meters below seafloor (mbsf)
9	Main Lithology	Main lith		Ternieten, Lotta
10	Minerals	Minerals		Ternieten, Lotta
11	Sample type	Samp type		Ternieten, Lotta
12	Type	Type		Ternieten, Lotta		Carbon Type
13	Carbon-14/Carbon-12 ratio	14C/12C		Ternieten, Lotta	MICADAS Accelerator Mass Spectrometer
14	Error, relative	Error r	%	Ternieten, Lotta	MICADAS Accelerator Mass Spectrometer
15	Fraction modern carbon	F14C		Ternieten, Lotta	MICADAS Accelerator Mass Spectrometer
16	Error, relative	Error r	%	Ternieten, Lotta	MICADAS Accelerator Mass Spectrometer	σ
17	AGE	Age	ka BP	Ternieten, Lotta		Geocode
18	Age, error	Age e	±	Ternieten, Lotta		σ

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

267 data points

Data

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

1 Event	2 Date/Time	3 Latitude	4 Longitude	5 Sample label (DSDP/ODP/IODP sample designation)	6 Depth top [m] (In meters below seafloor (mbsf))	7 Depth bot [m] (In meters below seafloor (mbsf))	8 Depth sed [m] (In meters below seafloor (mbsf))	9 Main lith	10 Minerals	11 Samp type	12 Type (Carbon Type)	13 14C/12C (MICADAS Accelerator Mass Spec...)	14 Error r [%] (MICADAS Accelerator Mass Spec...)	15 F14C (MICADAS Accelerator Mass Spec...)	16 Error r [%] (σ, MICADAS Accelerator Mass S...)	17 Age [ka BP]	18 Age e [±] (σ)
357-M0071A	2015-11-09	30.1285	-42.1533	357-M0071A-1R-2,0-5	0.58	0.63	0.61	Serpentinized dunite	Calcite	vein	inorganic	0.025	3.14	0.019	3.59	31.902	0.339
357-M0069A	2015-11-06	30.1324	-42.1200	357-M0069A-9R-2,57-61	13.94	13.98	13.96	Serpentinized harzburgite	Aragonite	vein	inorganic	0.020	3.23	0.014	3.66	34.057	0.410
357-M0069A	2015-11-06	30.1324	-42.1200	357-M0069A-9R-2,106-114	14.43	14.51	14.47	Serpentinized dunite		whole rock	total	0.024	3.75	0.017	4.45	32.854	0.414
357-M0069A	2015-11-06	30.1324	-42.1200	357-M0069A-9R-2,106-114	14.43	14.51	14.47	Serpentinized dunite		whole rock	non-carbonate	0.177	1.31	0.157	1.49	14.886	0.116
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-7R-1,28-30	9.27	9.29	9.28	Serpentinized dunite	Calcite	vein	inorganic	0.059	2.55	0.045	2.88	24.928	0.246
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-7R-1,75-77	9.74	9.76	9.75	Serpentinized harzburgite	Calcite	vein	inorganic	0.021	4.32	0.013	4.76	34.647	0.595
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-7R-1,75-77	9.74	9.76	9.75	Serpentinized harzburgite	Dolomite	vein	inorganic	0.040	2.69	0.029	2.89	28.438	0.287
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-1,19-22	10.90	10.93	10.92	Serpentinized harzburgite	Calcite	vein	inorganic	0.054	2.56	0.040	3.09	25.778	0.252
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-2,26-30	11.77	11.81	11.79	Serpentinized harzburgite		whole rock	non-carbonate	0.152	1.34	0.135	1.04	16.103	0.119
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-2,26-30	11.77	11.81	11.79	Serpentinized harzburgite	Calcite	vein	inorganic	0.068	2.45	0.055	2.61	23.355	0.224
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-CC,0-5	12.28	12.33	12.30	Serpentinized harzburgite		whole rock	total	0.567	0.87	0.489	1.00	5.754	0.076
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-CC,0-5	12.28	12.33	12.30	Serpentinized harzburgite		whole rock	non-carbonate	0.175	1.35	0.155	1.45	14.956	0.118
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-CC,5-20	12.33	12.48	12.40	Serpentinized harzburgite		whole rock	total	0.557	0.80	0.478	0.70	5.933	0.071
357-M0072B	2015-11-10	30.1299	-42.1221	357-M0072B-8R-CC,5-20	12.33	12.48	12.40	Serpentinized harzburgite		whole rock	non-carbonate	0.154	1.52	0.136	1.65	16.050	0.133
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-5R-1,48-50	7.28	7.30	7.29	Serpentinized dunite	Dolomite	vein	inorganic	0.043	2.51	0.032	2.84	27.745	0.265
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-5R-1,48-50	7.28	7.30	7.29	Serpentinized dunite	Calcite	vein	inorganic	0.046	3.09	0.034	3.48	27.148	0.308
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-5R-1,55-59	7.28	7.32	7.30	Serpentinized dunite		whole rock	total	0.039	2.76	0.030	3.05	28.210	0.272
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-5R-1,55-59	7.28	7.32	7.30	Serpentinized dunite		whole rock	non-carbonate	0.394	1.14	0.353	1.29	8.355	0.100
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-5R-1,55-59	7.28	7.32	7.30	Serpentinized dunite	Calcite	vein	inorganic	0.048	2.14	0.038	2.58	26.202	0.211
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-8R-1,112-117	12.27	12.32	12.30	Serpentinized harzburgite	Dolomite	vein	inorganic	0.021	3.11	0.015	1.79	33.737	0.395
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-9R-1,5-9	12.92	12.96	12.94	Serpentinized harzburgite	Dolomite	vein	inorganic	0.014	3.90	0.009	0.94	37.438	0.578
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-9R-1,5-9	12.92	12.96	12.94	Serpentinized harzburgite	Aragonite	vein	inorganic	0.058	2.27	0.047	2.53	24.556	0.208
357-M0076B	2015-11-15	30.1270	-42.1178	357-M0076B-9R-1,70-73	13.57	13.60	13.59	Serpentinized harzburgite	Aragonite	vein	inorganic	0.044	2.28	0.035	2.00	26.822	0.226