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

Earth Science

Research output: Contribution to journal › Article

13 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

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Keywords

Fungi
Modeling
Orpiment
Realgar
Submarine hydrothermal

ASJC Scopus subject areas

Oceanography
Geochemistry and Petrology
Geology

Cite this

Dekov, V. M., Bindi, L., Burgaud, G., Petersen, S., Asael, D., Rédou, V., ... Pracejus, B. (2013). Inorganic and biogenic As-sulfide precipitation at seafloor hydrothermal fields. Marine Geology, 342, 28-38. https://doi.org/10.1016/j.margeo.2013.06.006

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AU - Asael, Dan

AU - Rédou, Vanessa

AU - Fouquet, Yves

AU - Pracejus, Bernhard

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10.1016/j.margeo.2013.06.006