(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ...
The redox stratification of bottom sediments in Kandalaksha Bay, White Sea, is characterized by elevated concentrations of Mn (3-5%) and Fe (7.5%) in the uppermost layer, which is two orders of magnitude and one and a half times, respectively, higher than the average concentrations of these elements...
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ftdatacite:10.1594/pangaea.792621 2024-09-15T18:40:40+00:00 (Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... Rozanov, Alexander G Volkov, Igor I 2009 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.792621 https://doi.pangaea.de/10.1594/PANGAEA.792621 en eng PANGAEA https://dx.doi.org/10.1134/s001670290910005x Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Event label Method comment DEPTH, sediment/rock Depth, top/min Depth, bottom/max Lithology/composition/facies Iron Iron II, ferrous iron Iron III, ferric iron Iron 2+ Iron, total Manganese Carbon, organic, total Calcium carbonate Water content, wet mass Grab Multiple investigations Carbon analyser AN-7529, 7560 Ekolog-2002 PSh55 Ekolog Professor Shtokman Archive of Ocean Data ARCOD dataset Supplementary Dataset Dataset 2009 ftdatacite https://doi.org/10.1594/pangaea.79262110.1134/s001670290910005x 2024-08-01T10:53:32Z The redox stratification of bottom sediments in Kandalaksha Bay, White Sea, is characterized by elevated concentrations of Mn (3-5%) and Fe (7.5%) in the uppermost layer, which is two orders of magnitude and one and a half times, respectively, higher than the average concentrations of these elements in the Earth's crust. The high concentrations of organic matter (Corg = 1-2%) in these sediments cannot maintain (because of its low reaction activity) the sulfate-reducing process (the concentration of sulfide Fe is no higher than 0.6%). The clearest manifestation of diagenesis is the extremely high Mn2+ concentration in the silt water (>500 µM), which causes its flux into the bottom water, oxidation in contact with oxygen, and the synthesis of MnO2 oxy-hydroxide enriching the surface layer of the sediments. Such migrations are much less typical of Fe. Upon oxygen exhaustion in the uppermost layer of the sediments, the synthesized oxyhydroxides (MnO2 and FeOOH) serve as oxidizers of organic matter during ... : Supplement to: Rozanov, Alexander G; Volkov, Igor I (2009): Bottom sediments of Kandalaksha Bay in the White Sea: the phenomenon of Mn. Geochemistry International, 47(10), 1004-1020 ... Dataset White Sea DataCite |
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language |
English |
topic |
Event label Method comment DEPTH, sediment/rock Depth, top/min Depth, bottom/max Lithology/composition/facies Iron Iron II, ferrous iron Iron III, ferric iron Iron 2+ Iron, total Manganese Carbon, organic, total Calcium carbonate Water content, wet mass Grab Multiple investigations Carbon analyser AN-7529, 7560 Ekolog-2002 PSh55 Ekolog Professor Shtokman Archive of Ocean Data ARCOD |
spellingShingle |
Event label Method comment DEPTH, sediment/rock Depth, top/min Depth, bottom/max Lithology/composition/facies Iron Iron II, ferrous iron Iron III, ferric iron Iron 2+ Iron, total Manganese Carbon, organic, total Calcium carbonate Water content, wet mass Grab Multiple investigations Carbon analyser AN-7529, 7560 Ekolog-2002 PSh55 Ekolog Professor Shtokman Archive of Ocean Data ARCOD Rozanov, Alexander G Volkov, Igor I (Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
topic_facet |
Event label Method comment DEPTH, sediment/rock Depth, top/min Depth, bottom/max Lithology/composition/facies Iron Iron II, ferrous iron Iron III, ferric iron Iron 2+ Iron, total Manganese Carbon, organic, total Calcium carbonate Water content, wet mass Grab Multiple investigations Carbon analyser AN-7529, 7560 Ekolog-2002 PSh55 Ekolog Professor Shtokman Archive of Ocean Data ARCOD |
description |
The redox stratification of bottom sediments in Kandalaksha Bay, White Sea, is characterized by elevated concentrations of Mn (3-5%) and Fe (7.5%) in the uppermost layer, which is two orders of magnitude and one and a half times, respectively, higher than the average concentrations of these elements in the Earth's crust. The high concentrations of organic matter (Corg = 1-2%) in these sediments cannot maintain (because of its low reaction activity) the sulfate-reducing process (the concentration of sulfide Fe is no higher than 0.6%). The clearest manifestation of diagenesis is the extremely high Mn2+ concentration in the silt water (>500 µM), which causes its flux into the bottom water, oxidation in contact with oxygen, and the synthesis of MnO2 oxy-hydroxide enriching the surface layer of the sediments. Such migrations are much less typical of Fe. Upon oxygen exhaustion in the uppermost layer of the sediments, the synthesized oxyhydroxides (MnO2 and FeOOH) serve as oxidizers of organic matter during ... : Supplement to: Rozanov, Alexander G; Volkov, Igor I (2009): Bottom sediments of Kandalaksha Bay in the White Sea: the phenomenon of Mn. Geochemistry International, 47(10), 1004-1020 ... |
format |
Dataset |
author |
Rozanov, Alexander G Volkov, Igor I |
author_facet |
Rozanov, Alexander G Volkov, Igor I |
author_sort |
Rozanov, Alexander G |
title |
(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
title_short |
(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
title_full |
(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
title_fullStr |
(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
title_full_unstemmed |
(Table 1) Mn, Fe, TOC and CaCO3 concentrations in bottom sediments and silt waters of Kandalaksha Bay, White Sea ... |
title_sort |
(table 1) mn, fe, toc and caco3 concentrations in bottom sediments and silt waters of kandalaksha bay, white sea ... |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://dx.doi.org/10.1594/pangaea.792621 https://doi.pangaea.de/10.1594/PANGAEA.792621 |
genre |
White Sea |
genre_facet |
White Sea |
op_relation |
https://dx.doi.org/10.1134/s001670290910005x |
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.79262110.1134/s001670290910005x |
_version_ |
1810485067517001728 |