Inorganic and biogenic As-sulfide precipitation at seafloor hydrothermal fields

Vesselin M. Dekov; Luca Bindi; Gaëtan Burgaud; Sven Petersen; Dan Asael; Vanessa Rédou; Yves Fouquet; Bernhard Pracejus

doi:10.1016/j.margeo.2013.06.006

Inorganic and biogenic As-sulfide precipitation at seafloor hydrothermal fields

Vesselin M. Dekov^*, Luca Bindi, Gaëtan Burgaud, Sven Petersen, Dan Asael, Vanessa Rédou, Yves Fouquet, Bernhard Pracejus

^*Corresponding author for this work

Earth Science

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We investigated As-sulfides (orpiment, As₂S₃ and realgar, As₄S₄) from four seafloor hydrothermal fields: three from back-arc and one from mid-ocean ridge settings. Our studies suggest two different modes of As-sulfide precipitation at the seafloor hydrothermal sites: inorganic and biogenic. The Eh-pH modeling shows that the most stable As-sulfide at low-temperature (T2S₃. This process of fungal orpiment precipitation is a mechanism of bio-sequestration of hydrothermal As and another mode of soft-tissue fossilization not described so far.

Original language	English
Pages (from-to)	28-38
Number of pages	11
Journal	Marine Geology
Volume	342
DOIs	https://doi.org/10.1016/j.margeo.2013.06.006
Publication status	Published - Aug 1 2013

Keywords

Fungi
Modeling
Orpiment
Realgar
Submarine hydrothermal

ASJC Scopus subject areas

Oceanography
Geochemistry and Petrology
Geology

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title = "Inorganic and biogenic As-sulfide precipitation at seafloor hydrothermal fields",

abstract = "We investigated As-sulfides (orpiment, As2S3 and realgar, As4S4) from four seafloor hydrothermal fields: three from back-arc and one from mid-ocean ridge settings. Our studies suggest two different modes of As-sulfide precipitation at the seafloor hydrothermal sites: inorganic and biogenic. The Eh-pH modeling shows that the most stable As-sulfide at low-temperature (T2S3. This process of fungal orpiment precipitation is a mechanism of bio-sequestration of hydrothermal As and another mode of soft-tissue fossilization not described so far.",

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T1 - Inorganic and biogenic As-sulfide precipitation at seafloor hydrothermal fields

AU - Dekov, Vesselin M.

AU - Bindi, Luca

AU - Burgaud, Gaëtan

AU - Petersen, Sven

AU - Asael, Dan

AU - Rédou, Vanessa

AU - Fouquet, Yves

AU - Pracejus, Bernhard

PY - 2013/8/1

Y1 - 2013/8/1

N2 - We investigated As-sulfides (orpiment, As2S3 and realgar, As4S4) from four seafloor hydrothermal fields: three from back-arc and one from mid-ocean ridge settings. Our studies suggest two different modes of As-sulfide precipitation at the seafloor hydrothermal sites: inorganic and biogenic. The Eh-pH modeling shows that the most stable As-sulfide at low-temperature (T2S3. This process of fungal orpiment precipitation is a mechanism of bio-sequestration of hydrothermal As and another mode of soft-tissue fossilization not described so far.

AB - We investigated As-sulfides (orpiment, As2S3 and realgar, As4S4) from four seafloor hydrothermal fields: three from back-arc and one from mid-ocean ridge settings. Our studies suggest two different modes of As-sulfide precipitation at the seafloor hydrothermal sites: inorganic and biogenic. The Eh-pH modeling shows that the most stable As-sulfide at low-temperature (T2S3. This process of fungal orpiment precipitation is a mechanism of bio-sequestration of hydrothermal As and another mode of soft-tissue fossilization not described so far.

KW - Fungi

KW - Modeling

KW - Orpiment

KW - Realgar

KW - Submarine hydrothermal

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