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 |
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Pages (from-to) | 28-38 |
Number of pages | 11 |
Journal | Marine Geology |
Volume | 342 |
DOIs | |
Publication status | Published - Aug 1 2013 |
Keywords
- Fungi
- Modeling
- Orpiment
- Realgar
- Submarine hydrothermal
ASJC Scopus subject areas
- Oceanography
- Geochemistry and Petrology
- Geology