Active conversion of atmospheric carbon dioxide to methane in peridotites of the Samail Ophiolite, Oman.

Daniel B Nothaft^1,2, Alexis S Templeton³, Peter B Kelemen⁴, Eric S Boyd⁵, Juerg M Matter⁶

¹Department of Geological Sciences, University of Colorado, Boulder, CO, USA. daniel.nothaft@colorado.edu.

²Uplift Geosystems LLC, Baltimore, MD, USA. daniel.nothaft@colorado.edu.

³Department of Geological Sciences, University of Colorado, Boulder, CO, USA. alexis.templeton@colorado.edu.

⁴Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA.

⁵Department of Microbiology & Cell Biology, Montana State University, Bozeman, MT, USA.

⁶National Oceanography Centre Southampton, University of Southampton Waterfront Campus, Southampton, UK.

PubMed PMC DOI PDF

Abstract

Methane (CH [Formula: see text]) is common in fluids sourced from low-temperature hydrating (serpentinizing) peridotites, but the carbon sources, rates, and mechanisms of CH [Formula: see text] formation are uncertain. In CH [Formula: see text] dissolved in groundwaters pumped from four wells of up to 400 m depth in the Samail Ophiolite, Oman, we observed [Formula: see text] C contents ranging fro…

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