Journal ArticleDOI
Pyrite: Its Rapid Formation in a Salt Marsh and Its Importance In Ecosystem Metabolism
TLDR
Pyrite formation in salt-marsh peat occurs more rapidly than is generally thought for any natural system, and the rates of sulfate reduction and ecosystem respiration may be grossly underestimated.Abstract:
Pyrite formation in salt-marsh peat occurs more rapidly than is generally thought for any natural system. Pyrite is the major end product of sulfate reduction, and sulfate reduction is the major form of respiration in the salt-marsh ecosystem. When the rapid formation of pyrite is ignored, the rates of sulfate reduction and ecosystem respiration may be grossly underestimated.read more
Citations
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Journal ArticleDOI
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.
Journal ArticleDOI
The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales
Donald E. Canfield,Robert Raiswell,Joseph T. Westrich,Christopher M. Reaves,Robert A. Berner +4 more
TL;DR: In this article, a chromium reduction method was used for the determination of reduced inorganic sulfur compounds (pyrite + elemental sulfur + acid volatile monosulfides) in modern sediments and shales.
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The anaerobic degradation of organic matter in Danish coastal sediments - Iron reduction, manganese reduction, and sulfate reduction
TL;DR: It is speculated that in shallow sediments of the Skagerrak, surface Mn oxides are present in a somewhat reduced oxidation level allowing Mn2+ to escape, and perhaps providing the Mn22+ which enriches sediment of the deep basin, as well as reflecting the saturation by Mn2- of highly reactive surface adsorption sites.
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Measurement of bacterial sulfate reduction in sediments: Evaluation of a single-step chromium reduction method
TL;DR: In this paper, a procedure which includes the Total Reduced Inorganic Sulfur (TRIS) in a single distillation step is described for the radiotracer measurement of sulfate reduction in sediments.
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The chemistry of the hydrogen sulfide and iron sulfide systems in natural waters
TL;DR: In this article, the authors focus on the basic inorganic chemistry of reduced sulfur compounds in anaerobic sediments and euxinic marine environments, focusing on biogeochemical interactions and modelling sediment diagenesis.
References
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Journal ArticleDOI
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
Journal ArticleDOI
The distribution and isotopic abundance of sulphur in recent marine sediments off southern California
TL;DR: Analyses of sulphur compounds in basin sediments off southern California indicate that elemental sulphur, free sulphide, hydrotroilite, organic sulphur and pyrite are present in quantities that vary with environment and depth in the sediments as mentioned in this paper.
Journal ArticleDOI
Chemical and isotopic evidence for the in situ origin of marine humic substances
Arie Nissenbaum,Isaac R. Kaplan +1 more
TL;DR: In this article, the suggested pathway of marine humic acid formation and transformation in the sediment is (1) degraded cellular material, (2) water-soluble complex containing amino acids and carbohydrates, (3) fulvic acids, (4) humic acids, and (5) kerogen.