Journal ArticleDOI
Authigenesis of vivianite as influenced by methane-induced sulfidization in cold-seep sediments off southwestern Taiwan
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TLDR
Authigenesis of iron-rich phosphate nodules occurs in ironrich cold-seep sediments (MD052911 core) at Yung-An Ridge offshore southwestern Taiwan as mentioned in this paper.About:
This article is published in Journal of Asian Earth Sciences.The article was published on 2014-08-01. It has received 41 citations till now. The article focuses on the topics: Vivianite & Greigite.read more
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The occurrence, identification and environmental relevance of vivianite in waterlogged soils and aquatic sediments
TL;DR: A review of the nature, occurrence and environmental relevance of the authigenic ferrous iron phosphate mineral vivianite (Fe 3 (PO 4 ) 2 ·8H 2 O) in waterlogged soils and aquatic sediments is presented in this article.
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Vivianite is a major sink for phosphorus in methanogenic coastal surface sediments
TL;DR: In this paper, the role of reduced iron (Fe) phosphate mineral vivianite (Fe(II)3(PO4)*8H2O) has been quantified in marine sediments by combining the SEDEX method with microscopic and spectroscopic techniques such as micro X-ray fluorescence (μXRF) elemental mapping of resin-embedded sediments, as well as scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) and powder Xray diffraction (XRD).
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Iron oxide reduction in methane-rich deep Baltic Sea sediments
Matthias Egger,Mathilde Hagens,Célia-Julia Sapart,Célia-Julia Sapart,Nikki Dijkstra,Niels A. G. M. van Helmond,José M Mogollón,Nils Risgaard-Petersen,Carina van der Veen,Sabine Kasten,Natascha Riedinger,Michael E. Böttcher,Thomas Röckmann,Bo Barker Jørgensen,Caroline P. Slomp +14 more
TL;DR: In this article, the authors combine detailed geochemical analyses of the sediment and pore water retrieved from three sites that were drilled during the IODP Baltic Sea Paleoenvironment Expedition 347 with multicomponent diagenetic modeling to study the possible role of Fe-mediated AOM as a mechanism for the apparent Fe oxide reduction in the methane-bearing lake deposits below the A/L transition.
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Vivianite is a key sink for phosphorus in sediments of the Landsort Deep, an intermittently anoxic deep basin in the Baltic Sea
TL;DR: In this paper, the authors investigated sediments from the deepest basin in the Baltic Sea, the Landsort Deep (site M0063), that were retrieved during the Integrated Ocean Drilling Project (IODP) Baltic Sea Paleoenvironment Expedition 347.
Distribution of gassy sediments and mud volcanoes offshore southwestern Taiwan
TL;DR: In this article, the authors presented the results from recent intense marine geophysical surveys conducted offshore of southwestern Taiwan and identified mud volcanoes and gassy sediments along chirp sonar and seismic reflection profile data.
References
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Sedimentary pyrite formation: An update
TL;DR: In this article, it was shown that organic matter appears to be the major control on pyrite formation in normal (non-euxinic) terrigenous marine sediments where dissolved sulfate and iron minerals are abundant.
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Sedimentary pyrite formation
TL;DR: In this paper, the major stages of formation (bacterial sulfate reduction, formation of Fe monosulfides by reaction of H 2 S with Fe minerals, pyrite formation, reaction of Fe mono-sulfides with elemental sulfur), limiting factors, coastal sediments of central Connecticut
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Manganese- and Iron-Dependent Marine Methane Oxidation
TL;DR: It is shown that microorganisms from marine methane-seep sediment in the Eel River Basin in California are capable of using manganese and iron to oxidize methane, revealing that marine AOM is coupled, either directly or indirectly, to a larger variety of oxidants than previously thought.
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Authigenic apatite formation and burial in sediments from non-upwelling, continental margin environments
TL;DR: In this paper, the authors present porewater data suggestive of authigenic carbonate fluorapatite (CFA) formation in both these areas, suggesting that CFA is forming at the expense of organic P. This depth increase is mirrored by a decrease in solid-phase organic P at both sites, indicating continued formation of CFA during early diagenesis.