Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Aplin, Andrew C; Michard, Annie; Albarède, Francis (2022): Neodymium isotope ratios for iron-manganese crusts and manganese nodules of the Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945862

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2022-07-04 • DOI registered: 2022-08-09

RIS CitationBibTeX Citation Copy Citation ShareShow MapGoogle Earth 21 7 4

Abstract:
Iron-manganese crusts were chosen from existing collections in order to cover as wide an area and depth range as possible. Sampling was concentrated in the Central Pacific seamount provinces where crusts are most commonly found coating lithic substrates. Two Mn nodules from similar areas were also sampled for comparison. Sub-samples were taken for isotopic analysis from known depths within individual crusts and nodules either by use of a stainless steel dental drill or by chipping away surface oxide layers. After grinding in an agate pestle and mortar, authigenic Fe-Mn oxides were leached with warm 25N HCl Solutions were evaporated to dryness and Nd isolated and analysed isotopically. All ratios were normalized to a 143Nd/144Nd ratio of 0.7219, and repeated analyses of the La Jolla standard gave an average value of 0.511847 ± 21 (unweighted).
Keyword(s):
Geochemistry; manganese micronodule; manganese nodule; ocean; sediment
Related to:
Aplin, Andrew C; Michard, Annie; Albarède, Francis (1986): 143Nd/144Nd in Pacific ferromanganese encrustations and nodules. Earth and Planetary Science Letters, 81(1), 7-14, https://doi.org/10.1016/0012-821X(86)90096-8
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: 3.387607 * Median Longitude: -160.508710 * South-bound Latitude: -41.983000 * West-bound Longitude: 142.970000 * North-bound Latitude: 40.388000 * East-bound Longitude: -85.233000
Date/Time Start: 1952-09-23T00:00:00 * Date/Time End: 1983-04-02T00:00:00
Minimum Elevation: -5540.0 m * Maximum Elevation: -485.0 m
Event(s):
AMPH-009D (AMPH02AR-009D) * Latitude: -22.583000 * Longitude: -150.917000 * Date/Time: 1964-01-11T00:00:00 * Elevation: -807.0 m * Location: Pacific Ocean * Campaign: AMPHITRITE (AMPH01AR) * Basis: Argo * Method/Device: Dredge (DRG) * Comment: PI: Menard, Henry William
ARIES-029D * Latitude: 29.490000 * Longitude: 153.348000 * Date/Time: 1971-05-31T00:00:00 * Elevation: -1991.0 m * Location: Pacific Ocean * Campaign: ARIES * Basis: Thomas Washington * Method/Device: Dredge (DRG)
ARIES-056D * Latitude: 31.020000 * Longitude: 175.873000 * Date/Time: 1971-08-22T00:00:00 * Elevation: -598.0 m * Location: Pacific Ocean * Campaign: ARIES * Basis: Thomas Washington * 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 is digitized from Table 1, pp. 8 of the linked publication.
--
Comment: e-Nd = [ ((143Nd/144Nd)Sample - (143Nd/144Nd)CHUR) / (143Nd/144Nd)CHUR)] * 10000 where CHUR stands for "chondritic uniform reservoir" at 2.5 Ga
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventAplin, Andrew C
2Latitude of eventLatitudeAplin, Andrew C
3Longitude of eventLongitudeAplin, Andrew C
4Elevation of eventElevationmAplin, Andrew C
5Device typeDeviceAplin, Andrew C
6IdentificationIDAplin, Andrew C
7Deposit typeDeposit typeAplin, Andrew C
8DistanceDistmmAplin, Andrew C
9Distance, minimumDist minmmAplin, Andrew C
10Distance, maximumDist maxmmAplin, Andrew C
11Neodymium-143/Neodymium-144 ratio143Nd/144NdAplin, Andrew C
12Neodymium-143/Neodymium-144 ratio, standard deviation143Nd/144Nd std dev±Aplin, Andrew C
13ε-Neodymium (0)ε-Nd(0)Aplin, Andrew CEstimated
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
270 data points

Download Data

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

View dataset as HTML