Citation:

PANGAEA.943839

Name: Rare-earth and major elements concentration in manganese micronodules nodules from the sediments of the Northwest Atlantic
Creator: Sunit Kumar Addy
Published: 2022-05-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Abstract:

The shale-normalized REE patterns of manganese nodules from the northwest Atlantic show enrichment in Sm and Eu relative to the heavier and lighter REE, excluding Ce, and are similar to the patterns previously observed in deep water (> 3000m) nodules from the Pacific. The inverse relation of this pattern to that of sea water and the high Ce anomaly (average 5.5) indicate that probably the REE in the nodules originate from sea water and the nodules are possibly hydrogenous. The patterns for micronodules are similar to those of the nodules but the concentrations of REE were substantially higher in two of them. The red clay occurring on abyssal hills where nodules and micronodules are found also shows higher REE concentrations over terrigenous gray clay. The latter is devoid of nodules and micronodules and occurs in abyssal plains. The excess REE in the red clay also show a pattern similar to those of the nodules and micronodules. Most of the micronodule samples show a lower Ce anomaly (1.7) and lower Co concentration compared to the nodules, so it is inferred that at least some micronodules were formed during post-depositional periods when the conditions were less oxidizing than average.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Addy, Sunit Kumar (1979): Rare earth element patterns in manganese nodules and micronodules from northwest Atlantic. Geochimica et Cosmochimica Acta, 43(7), 1105-1115, https://doi.org/10.1016/0016-7037(79)90097-8

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: 27.451400 * Median Longitude: -60.270980 * South-bound Latitude: 26.590000 * West-bound Longitude: -61.588300 * North-bound Latitude: 28.781700 * East-bound Longitude: -59.710000

Date/Time Start: 1973-08-18T00:00:00 * Date/Time End: 1973-09-01T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 1.50 m

Event(s):

RC16-003B (13.BC3) * Latitude: 26.590000 * Longitude: -59.828300 * Date/Time: 1973-08-21T00:00:00 * Elevation: -5260.0 m * Penetration: 0.95 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Box corer (BC)

RC16-005B (13.BC5) * Latitude: 28.781700 * Longitude: -60.378300 * Date/Time: 1973-08-28T00:00:00 * Elevation: -5885.0 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Box corer (BC)

RC16-006B (13.BC6) * Latitude: 27.873300 * Longitude: -61.588300 * Date/Time: 1973-09-01T00:00:00 * Elevation: -5480.0 m * Penetration: 0.58 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Box corer (BC)

Comment:

Digitized Table 2, page 1110-1111; Composition is given in an acid insoluble free and carbonate free basis.

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.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Addy, Sunit Kumar
2	Latitude of event	Latitude		Addy, Sunit Kumar
3	Longitude of event	Longitude		Addy, Sunit Kumar
4	Elevation of event	Elevation	m	Addy, Sunit Kumar
5	Device type	Device		Addy, Sunit Kumar
6	Identification	ID		Addy, Sunit Kumar
7	DEPTH, sediment/rock	Depth sed	m	Addy, Sunit Kumar		Geocode
8	Depth, top/min	Depth top	m	Addy, Sunit Kumar
9	Depth, bottom/max	Depth bot	m	Addy, Sunit Kumar
10	Manganese	Mn	%	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
11	Iron	Fe	%	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
12	Zinc	Zn	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
13	Copper	Cu	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
14	Nickel	Ni	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
15	Cobalt	Co	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
16	Lanthanum	La	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
17	Cerium	Ce	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
18	Neodymium	Nd	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
19	Samarium	Sm	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
20	Europium	Eu	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
21	Terbium	Tb	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
22	Ytterbium	Yb	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
23	Lutetium	Lu	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
24	Acid soluble, total	Acid sol tot	%	Addy, Sunit Kumar	Wet chemistry
25	Calcium carbonate	CaCO3	%	Addy, Sunit Kumar	Wet chemistry
26	Comment	Comment		Addy, Sunit Kumar	X-ray diffraction (XRD)	Mn Mineralogy
27	Deposit type	Deposit type		Addy, Sunit Kumar
28	Size	Size		Addy, Sunit Kumar

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

152 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Device	6 ID	7 Depth sed [m]	8 Depth top [m]	9 Depth bot [m]	10 Mn [%]	11 Fe [%]	12 Zn [mg/kg]	13 Cu [mg/kg]	14 Ni [mg/kg]	15 Co [mg/kg]	16 La [mg/kg]	17 Ce [mg/kg]	18 Nd [mg/kg]	19 Sm [mg/kg]	20 Eu [mg/kg]	21 Tb [mg/kg]	22 Yb [mg/kg]	23 Lu [mg/kg]	24 Acid sol tot [%]	25 CaCO3 [%]	26 Comment	27 Deposit type	28 Size
RC16-187P	26.6000	-59.8500	-5379	core, piston	RC16-187P-1-A21	0.00	0.00	0.00	21.46	14.02	699	1420	4808	3598	156	2160		37	10.7	6.0	13.40	1.9	20.0	1.40	Todorokite, birnessite	Mn micronodules
RC16-188	27.4120	-59.7100	-5842	core, piston	RC16-188-2-A22	0.85	0.85	0.85	15.38	31.14	785	1619	2494	2479	266	899		60	12.4	7.2	13.70	2.0	19.3	0.40	Delta MnO2	Mn micronodules
RC16-188	27.4120	-59.7100	-5842	core, piston	RC16-188-2-A23	1.50	1.50	1.50	15.72	33.58	795	1599	2381	2283	295	983		64	13.2	7.7	17.30	2.5	17.7	0.40	Delta MnO2	Mn micronodules
RC16-006B	27.8733	-61.5883	-5480	core, box	RC16-006B-6-A24	0.25	0.20	0.30	14.63	6.58	648	1946	5603	1418	314	835	393	108	21.7	13.5	24.20	3.5	27.7	3.20	Todorokite, birnessite	Mn micronodules	<0.1 mm
RC16-003B	26.5900	-59.8283	-5260	core, box	RC16-003B-3-A26	0.00	0.00	0.00	15.45	17.17	379	1486	1884	4247	140	2180		20	5.6	5.7	8.05	1.0	14.4	0.00	Delta MnO2	Mn micronodules	0.2-0.4 mm
RC16-003B	26.5900	-59.8283	-5260	core, box	RC16-003B-7-A25	0.25	0.20	0.30	17.05	10.02	597	2325	4780	1890	511	1935	641	192	45.5	28.5	43.20	6.4	36.7	6.40		Mn micronodules	<0.1 mm
RC16-005B	28.7817	-60.3783	-5885	core, box	RC16-005B-1-A27	0.15	0.10	0.20	26.87	7.62	1115	4333	10753	831	162	527		69	13.5	8.5	15.60	2.6	52.3	0.55	Birnessite	Mn micronodules	<0.1 mm