Low temperature alteration of serpentinized ultramafic rock and implications for microbial life

Alteration (serpentinization) of ultramafic rocks is known to generate hydrogen through oxidation of ferrous iron in olivine or pyroxene and reduction of water. Hydrogen oxidation can act as a primary source for chemolithotrophic microbial communities and it is suggested that hydrogen availability i...

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Veröffentlicht in:	Chemical geology 2012-07, Vol.318-319, p.75-87
Hauptverfasser:	Okland, I., Huang, S., Dahle, H., Thorseth, I.H., Pedersen, R.B.
Format:	Artikel
Sprache:	eng
Schlagworte:	alkalinity ammonium compounds biosphere Boreholes Brucite calcite carbon carbon dioxide chemical speciation Chemolithotrophs Deep biosphere Dissolution drilling Ferrous brucite Fracture mechanics groundwater H2 production hydrogen iron Low-temperature alteration magnesium Magnesium hydroxide magnetite manganese methane microbial communities Microorganisms nutrients organic matter Oxidation oxygen Rock serpentine Serpentinized ultramafic rocks silicon temperature trophic relationships ultramafic rocks
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