Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham
ABSTRACT. It is well documented that sedimentary pyrite formation proceeds through an iron monosulfide (FeS) precursor. Laboratory studies have tradition-ally indicated that intermediate S species such as elemental sulfur (S0) or polysul-fides (Sx2) are responsible for the transformation of FeS to p...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.532.8618 2023-05-15T17:53:48+02:00 Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham Matthew T. Hurtgen Timothy W. Lyons Ellery D. Ingall Anna M. Cruse The Pennsylvania State University CiteSeerX Archives 1999 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.532.8618 http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.532.8618 http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf text 1999 ftciteseerx 2016-01-08T10:41:29Z ABSTRACT. It is well documented that sedimentary pyrite formation proceeds through an iron monosulfide (FeS) precursor. Laboratory studies have tradition-ally indicated that intermediate S species such as elemental sulfur (S0) or polysul-fides (Sx2) are responsible for the transformation of FeS to pyrite (FeS2). Recent experimental work, however, has suggested that H2S may also be responsible for the transformation. The present study extrapolates reaction pathways respon-sible for pyrite formation in the laboratory to two fundamentally different modern anoxic marine systems. We hypothesize that on decadal timescales, H2S (or HS) is responsible for transformations of FeS into FeS2 in natural systems where intermediate S species are isolated from FeS production. The possibility of prolonged coexistence of high levels of H2S and FeS, however, challenges recent experimental predictions of extremely rapid transformations (that is, timescales of hours or less) of FeS to FeS2 via the H2S pathway. Sediments of Effingham Inlet (a fjord on Vancouver Island) and the Orca Basin (an intraslope brine pool in the northern Gulf of Mexico) are both charac- Text Orca Unknown |
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ABSTRACT. It is well documented that sedimentary pyrite formation proceeds through an iron monosulfide (FeS) precursor. Laboratory studies have tradition-ally indicated that intermediate S species such as elemental sulfur (S0) or polysul-fides (Sx2) are responsible for the transformation of FeS to pyrite (FeS2). Recent experimental work, however, has suggested that H2S may also be responsible for the transformation. The present study extrapolates reaction pathways respon-sible for pyrite formation in the laboratory to two fundamentally different modern anoxic marine systems. We hypothesize that on decadal timescales, H2S (or HS) is responsible for transformations of FeS into FeS2 in natural systems where intermediate S species are isolated from FeS production. The possibility of prolonged coexistence of high levels of H2S and FeS, however, challenges recent experimental predictions of extremely rapid transformations (that is, timescales of hours or less) of FeS to FeS2 via the H2S pathway. Sediments of Effingham Inlet (a fjord on Vancouver Island) and the Orca Basin (an intraslope brine pool in the northern Gulf of Mexico) are both charac- |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Matthew T. Hurtgen Timothy W. Lyons Ellery D. Ingall Anna M. Cruse |
spellingShingle |
Matthew T. Hurtgen Timothy W. Lyons Ellery D. Ingall Anna M. Cruse Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
author_facet |
Matthew T. Hurtgen Timothy W. Lyons Ellery D. Ingall Anna M. Cruse |
author_sort |
Matthew T. Hurtgen |
title |
Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
title_short |
Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
title_full |
Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
title_fullStr |
Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
title_full_unstemmed |
Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations; examples from Effingham |
title_sort |
anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of h2s in iron sulfide transformations; examples from effingham |
publishDate |
1999 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.532.8618 http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf |
genre |
Orca |
genre_facet |
Orca |
op_source |
http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.532.8618 http://earth.geology.yale.edu/~ajs/1999/07-09.1999.03Hurtgen.pdf |
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