Analyses of ferromanganese micronodules from the central Arctic Ocean ...
In order to determine geochemical compositions of Late Cenozoic Arctic seawater, oxide fractions were chemically separated from 15 samples of hand-picked ferromanganese micronodules (50-300 mu m). The success of the chemical separation is indicated by the fact that >97% of the Sr in the oxide fra...
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ftdatacite:10.1594/pangaea.859278 2024-09-15T17:53:33+00:00 Analyses of ferromanganese micronodules from the central Arctic Ocean ... Winter, Bryce L Johnson, Clark M Clark, David L 1997 application/zip https://dx.doi.org/10.1594/pangaea.859278 https://doi.pangaea.de/10.1594/PANGAEA.859278 en eng PANGAEA https://dx.doi.org/10.1016/s0025-3227(97)00013-3 https://dx.doi.org/10.7289/v52z13ft https://dx.doi.org/10.7289/v53x84kn Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Gravity corer CESAR T-3 Sampling/drilling from ice Sampling/drilling ice NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS article Collection Supplementary Publication Series of Datasets 1997 ftdatacite https://doi.org/10.1594/pangaea.85927810.1016/s0025-3227(97)00013-310.7289/v52z13ft10.7289/v53x84kn 2024-08-01T10:53:32Z In order to determine geochemical compositions of Late Cenozoic Arctic seawater, oxide fractions were chemically separated from 15 samples of hand-picked ferromanganese micronodules (50-300 mu m). The success of the chemical separation is indicated by the fact that >97% of the Sr in the oxide fraction is seawater-derived. Rare-earth element (REE) abundances of the Arctic micronodule oxide fractions are much lower than those of bulk Fe-Mn nodules from other ocean basins of the world (e.g., 33 vs. 145 ppm Nd), but the Arctic oxides are enriched in Ce relative to Nd (Ce-N/Nd-N=2.2+/-0.5) and have convex-upward, shale-normalized REE patterns (Nd-N/Gd-N=0.61+/-0.06, Gd-N/Yb-N = 1.5+/-0.2, Nd-N/Yb-N = 0.9+/-0.2), typical of other hydrogenous and diagenetic marine Fe-Mn-oxides. Bulk sediment samples from the central Arctic Ocean have REE abundances and patterns that are characteristic of those of post-Archean shale. Non-detrital fractions (calcite + oxide coatings) of Recent Arctic foraminifera have REE ... : 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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. ... Article in Journal/Newspaper Arctic Ocean Foraminifera* DataCite |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Gravity corer CESAR T-3 Sampling/drilling from ice Sampling/drilling ice NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS |
spellingShingle |
Gravity corer CESAR T-3 Sampling/drilling from ice Sampling/drilling ice NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS Winter, Bryce L Johnson, Clark M Clark, David L Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
topic_facet |
Gravity corer CESAR T-3 Sampling/drilling from ice Sampling/drilling ice NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS |
description |
In order to determine geochemical compositions of Late Cenozoic Arctic seawater, oxide fractions were chemically separated from 15 samples of hand-picked ferromanganese micronodules (50-300 mu m). The success of the chemical separation is indicated by the fact that >97% of the Sr in the oxide fraction is seawater-derived. Rare-earth element (REE) abundances of the Arctic micronodule oxide fractions are much lower than those of bulk Fe-Mn nodules from other ocean basins of the world (e.g., 33 vs. 145 ppm Nd), but the Arctic oxides are enriched in Ce relative to Nd (Ce-N/Nd-N=2.2+/-0.5) and have convex-upward, shale-normalized REE patterns (Nd-N/Gd-N=0.61+/-0.06, Gd-N/Yb-N = 1.5+/-0.2, Nd-N/Yb-N = 0.9+/-0.2), typical of other hydrogenous and diagenetic marine Fe-Mn-oxides. Bulk sediment samples from the central Arctic Ocean have REE abundances and patterns that are characteristic of those of post-Archean shale. Non-detrital fractions (calcite + oxide coatings) of Recent Arctic foraminifera have REE ... : 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. ... |
format |
Article in Journal/Newspaper |
author |
Winter, Bryce L Johnson, Clark M Clark, David L |
author_facet |
Winter, Bryce L Johnson, Clark M Clark, David L |
author_sort |
Winter, Bryce L |
title |
Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
title_short |
Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
title_full |
Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
title_fullStr |
Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
title_full_unstemmed |
Analyses of ferromanganese micronodules from the central Arctic Ocean ... |
title_sort |
analyses of ferromanganese micronodules from the central arctic ocean ... |
publisher |
PANGAEA |
publishDate |
1997 |
url |
https://dx.doi.org/10.1594/pangaea.859278 https://doi.pangaea.de/10.1594/PANGAEA.859278 |
genre |
Arctic Ocean Foraminifera* |
genre_facet |
Arctic Ocean Foraminifera* |
op_relation |
https://dx.doi.org/10.1016/s0025-3227(97)00013-3 https://dx.doi.org/10.7289/v52z13ft https://dx.doi.org/10.7289/v53x84kn |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.85927810.1016/s0025-3227(97)00013-310.7289/v52z13ft10.7289/v53x84kn |
_version_ |
1810429439524208640 |