The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ...
The formation of pyrite in deep-marine sediments is typically limited by organic carbon or/and reactive iron availability. The Southern Ocean generally exhibits an iron deficiency, limiting bioproductivity and thus the sequestration of CO2 from the atmosphere. Based on iron deficiency in the photic...
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Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
2022
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ftdatacite:10.48380/3dwn-bn74 2023-11-05T03:44:52+01:00 The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... Mikler, Monika Weber, Michael Franz, Sven Oliver März, Christian 2022 https://dx.doi.org/10.48380/3dwn-bn74 https://www.dggv.de/e-publikationen/the-controls-on-sedimentary-pyrite-formation-in-southern-ocean-deep-sea-sediments en eng Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV) article-journal Text Abstract ScholaryArticle 2022 ftdatacite https://doi.org/10.48380/3dwn-bn74 2023-10-09T11:00:20Z The formation of pyrite in deep-marine sediments is typically limited by organic carbon or/and reactive iron availability. The Southern Ocean generally exhibits an iron deficiency, limiting bioproductivity and thus the sequestration of CO2 from the atmosphere. Based on iron deficiency in the photic zone, it could be assumed that the formation of pyrite is iron-limited, too. To evaluate the controls on sedimentary pyrite formation, sediments from ca. 4 Ma to recent, recovered during IODP Expedition 382 (Iceberg Alley) in the Scotia Sea, were examined for their carbon, nitrogen, sulfur, major and minor element contents. The organic carbon and sulfur contents in the sediments have a mean value of c. 0.4 and 0.3 wt.%, respectively, whilst iron has a mean value of c. 4 wt.%. Organic carbon and sulfur demonstrate a good correlation and a significant increase from c. 1.25 Ma toward the stratigraphically younger. Further, the relationship between iron, sulfur, and organic carbon suggests that sulfur is fixed in ... Text Scotia Sea Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
The formation of pyrite in deep-marine sediments is typically limited by organic carbon or/and reactive iron availability. The Southern Ocean generally exhibits an iron deficiency, limiting bioproductivity and thus the sequestration of CO2 from the atmosphere. Based on iron deficiency in the photic zone, it could be assumed that the formation of pyrite is iron-limited, too. To evaluate the controls on sedimentary pyrite formation, sediments from ca. 4 Ma to recent, recovered during IODP Expedition 382 (Iceberg Alley) in the Scotia Sea, were examined for their carbon, nitrogen, sulfur, major and minor element contents. The organic carbon and sulfur contents in the sediments have a mean value of c. 0.4 and 0.3 wt.%, respectively, whilst iron has a mean value of c. 4 wt.%. Organic carbon and sulfur demonstrate a good correlation and a significant increase from c. 1.25 Ma toward the stratigraphically younger. Further, the relationship between iron, sulfur, and organic carbon suggests that sulfur is fixed in ... |
format |
Text |
author |
Mikler, Monika Weber, Michael Franz, Sven Oliver März, Christian |
spellingShingle |
Mikler, Monika Weber, Michael Franz, Sven Oliver März, Christian The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
author_facet |
Mikler, Monika Weber, Michael Franz, Sven Oliver März, Christian |
author_sort |
Mikler, Monika |
title |
The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
title_short |
The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
title_full |
The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
title_fullStr |
The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
title_full_unstemmed |
The controls on sedimentary pyrite formation in Southern Ocean deep-sea sediments ... |
title_sort |
controls on sedimentary pyrite formation in southern ocean deep-sea sediments ... |
publisher |
Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV) |
publishDate |
2022 |
url |
https://dx.doi.org/10.48380/3dwn-bn74 https://www.dggv.de/e-publikationen/the-controls-on-sedimentary-pyrite-formation-in-southern-ocean-deep-sea-sediments |
genre |
Scotia Sea Southern Ocean |
genre_facet |
Scotia Sea Southern Ocean |
op_doi |
https://doi.org/10.48380/3dwn-bn74 |
_version_ |
1781705948075655168 |