Citation:

PANGAEA.954523

Name: Element and isotope composition of light noble gas in marine ferromanganese nodules
Published: 2023-01-18
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Abstract:

The authors have measured element and isotope compositions of He and Ar gases in 10 nodules dredged from Mariana Trough (opening back-arc basin) and the Ogasawara region on the Hakuho Maru Cruise. After being washed with distilled water, samples were dried and preheated in vacuo at 150°C in a gas extraction system for two days to reduce surface air contamination. Each sample was placed in a doublewalled tantalum crucible with a surrounding tantalum heater and extracted gases at 1700°C . Gas purification was carried out by the two-stage Ti/Zr getter. The He-Ne and Ar fractions were separated by use of charcoal traps held at -196°C. The noble gas isotopes were analysed by a single focusing mass spectrometer (6-60-SGA, Nuclide Co.). A resolving power of ~600 at 1% peak height was attained to separate 3He from H3 + HD.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Sano, Yuji; Toyoda, Kazuhiro; Wakita, Hiroshi (1985): 3He/4He ratios of marine ferromanganese nodules. Nature, 317(6037), 518-520, https://doi.org/10.1038/317518a0

Sano, Yuji; Toyoda, Kazuhiro; Wakita, Hiroshi (2023): Major and minor elements of marine ferromanganese nodules [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954525

Source:

Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT

Further details:

Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

Project(s):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 23.650524 * Median Longitude: 143.891429 * South-bound Latitude: 20.233333 * West-bound Longitude: 142.967000 * North-bound Latitude: 26.267000 * East-bound Longitude: 144.317000

Date/Time Start: 1984-04-18T00:00:00 * Date/Time End: 1984-05-24T00:00:00

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

KH84-1-2D (KOBAKA8501_1_2) * Latitude: 26.267000 * Longitude: 142.967000 * Date/Time: 1984-04-18T00:00:00 * Elevation: -1430.0 m * Location: Pacific Ocean * Campaign: (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)

KH84-1-3D (KOBAKA8501_1_3) * Latitude: 26.083000 * Longitude: 144.317000 * Date/Time: 1984-04-19T00:00:00 * Elevation: -1050.0 m * Location: Pacific Ocean * Campaign: (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)

KH84-1-5D (KOBAKA8501_1_5) * Latitude: 26.217000 * Longitude: 144.083000 * Date/Time: 1984-04-19T00:00:00 * Elevation: -2430.0 m * Location: Pacific Ocean * Campaign: (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)

Comment:

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

This dataset represents the digitized Table 1, pp. 519 of the related publication.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Sano, Yuji
2	Latitude of event	Latitude		Sano, Yuji
3	Longitude of event	Longitude		Sano, Yuji
4	Elevation of event	Elevation	m	Sano, Yuji
5	Identification	ID		Sano, Yuji
6	Deposit type	Deposit type		Sano, Yuji
7	DEPTH, sediment/rock	Depth sed	m	Sano, Yuji		Geocode
8	Helium-4	4He	10^-9 cm³/g	Sano, Yuji	Mass spectrometry
9	Neon-20	20Ne	10^-10 cm³/g	Sano, Yuji	Mass spectrometry
10	Argon-36	36Ar	10^-9 cm³/g	Sano, Yuji	Mass spectrometry
11	Helium-3/Helium-4	3He/4He	10^-4	Sano, Yuji	Mass spectrometry
12	Helium-3/Helium-4, standard deviation	3He/4He std dev	±	Sano, Yuji	Mass spectrometry
13	Argon-40/Argon-36	40Ar/36Ar		Sano, Yuji	Mass spectrometry
14	Argon-40/Argon-36, standard deviation	40Ar/36Ar std dev	±	Sano, Yuji	Mass spectrometry
15	Argon-38/Argon-36	38Ar/36Ar		Sano, Yuji	Mass spectrometry
16	Argon-38/Argon-36, standard deviation	38Ar/36Ar std dev	±	Sano, Yuji	Mass spectrometry
17	Argon-40, radiogenic	40Ar*	10^-7 cm³/g	Sano, Yuji	Mass spectrometry

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

115 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 ID	6 Deposit type	8 4He [10^-9 cm³/g]	9 20Ne [10^-10 cm³/g]	10 36Ar [10^-9 cm³/g]	11 3He/4He [10^-4]	12 3He/4He std dev [±]	13 40Ar/36Ar	14 40Ar/36Ar std dev [±]	15 38Ar/36Ar	16 38Ar/36Ar std dev [±]	17 40Ar* [10^-7 cm³/g]
KH84-1-16D	20.2333	143.8833	-3400	KH84-1-16D-1SKH-001	Mn nodule	0.1300	0.0130	0.0022	0.044	0.010	835	6	0.186	0.001	0.0120
KH84-1-19D	20.2367	144.0900	-2730	KH84-1-19D-1SKH-A	Mn nodule	0.1300	0.0082	0.0022	0.151	0.016	807	16	0.187	0.002	0.0120
KH84-1-19D	20.2367	144.0900	-2730	KH84-1-19D-1SKH-B	Mn nodule	0.0940	<0.3000	0.0500	0.043	0.018	316	4	0.189	0.001	0.0100
KH84-1-19D	20.2367	144.0900	-2730	KH84-1-19D-1SKH-C	Mn nodule			0.0400			333	4	0.188	0.002	0.0150
KH84-1-25D	20.3167	143.7167	-2810	KH84-1-25D-2SKH	Mn nodule	0.0490	0.0380	0.0430	0.225	0.017	324	6	0.188	0.001	0.0120
KH84-1-2D	26.2670	142.9670	-1430	KH84-1-2D-2SKH-124	Mn nodule	0.0260	<0.1000	0.0700	0.015	0.006	311	3	0.184	0.003	0.0110
KH84-1-3D	26.0830	144.3170	-1050	KH84-1-3D-3SKH-606	Mn nodule	0.0098	0.0025	0.0029	0.593	0.094	384	2	0.185	0.001	0.0026
KH84-1-3D	26.0830	144.3170	-1050	KH84-1-3D-3SKH-607	Mn nodule	0.0580	0.0400	0.0120	0.059	0.015	290	4	0.188	0.001
KH84-1-5D	26.2170	144.0830	-2430	KH84-1-5D-2SKH-33	Mn nodule	0.1200	<0.1000	0.0270	0.102	0.010	313	6	0.188	0.001	0.0047
KH84-1-27D	26.2000	144.1830	-890	KH84-1-27D-2SKH-017	Mn nodule	0.0120	<0.0010	0.0017	0.060	0.050	432	1	0.185	0.002	0.0023