Articles | Volume 13, issue 8
https://doi.org/10.5194/se-13-1191-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-13-1191-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Aug 2022
Research article |
| 01 Aug 2022
| 01 Aug 2022
Progressive veining during peridotite carbonation: insights from listvenites in Hole BT1B, Samail ophiolite (Oman)
Tectonics and Geodynamics, RWTH Aachen University, Lochnerstrasse
4–20, 52056 Aachen, Germany
now at: Instituto Andaluz de Ciencias de la Tierra (CSIC-IACT),
Avenida de Palmeras 4, 18100 Armilla, Spain
Janos L. Urai
Tectonics and Geodynamics, RWTH Aachen University, Lochnerstrasse
4–20, 52056 Aachen, Germany
Estibalitz Ukar
Bureau of Economic Geology, The University of Texas at Austin, Austin, TX, USA
Thierry Decrausaz
Géosciences Montpellier, CNRS, Université de Montpellier,
Montpellier, France
Marguerite Godard
Géosciences Montpellier, CNRS, Université de Montpellier,
Montpellier, France
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Short summary
Mantle rocks can bind large quantities of carbon by reaction with CO2, but this capacity requires fluid pathways not to be clogged by carbonate. We studied mantle rocks from Oman to understand the mechanisms allowing their transformation into carbonate and quartz. Using advanced imaging techniques, we show that abundant veins were essential fluid pathways driving the reaction. Our results show that tectonic stress was important for fracture opening and a key ingredient for carbon fixation.
Mantle rocks can bind large quantities of carbon by reaction with CO2, but this capacity...
