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@ARTICLE{Menzel:908609,
author = {Menzel, Manuel D. and Urai, Janos L. and Ukar, Estibalitz
and Hirth, Greg and Schwedt, Alexander and Kovács, András
and Kibkalo, Lidia and Kelemen, Peter B.},
title = {{D}uctile deformation during carbonation of serpentinized
peridotite},
journal = {Nature Communications},
volume = {13},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {FZJ-2022-02718},
pages = {3478},
year = {2022},
abstract = {Carbonated serpentinites (listvenites) in the Samail
Ophiolite, Oman, record mineralization of 1–2 Gt of CO2,
but the mechanisms providing permeability for continued
reactive fluid flow are unclear. Based on samples of the
Oman Drilling Project, here we show that listvenites with a
penetrative foliation have abundant microstructures
indicating that the carbonation reaction occurred during
deformation. Folded magnesite veins mark the onset of
carbonation, followed by deformation during carbonate
growth. Undeformed magnesite and quartz overgrowths indicate
that deformation stopped before the reaction was completed.
We propose deformation by dilatant granular flow and
dissolution-precipitation assisted the reaction, while
deformation in turn was localized in the weak reacting mass.
Lithostatic pore pressures promoted this process, creating
dilatant porosity for CO2 transport and solid volume
increase. This feedback mechanism may be common in
serpentinite-bearing fault zones and the mantle wedge
overlying subduction zones, allowing massive carbonation of
mantle rocks.},
cin = {ER-C-1},
ddc = {500},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535)},
pid = {G:(DE-HGF)POF4-5351},
typ = {PUB:(DE-HGF)16},
pubmed = {35710547},
UT = {WOS:000812995300021},
doi = {10.1038/s41467-022-31049-1},
url = {https://juser.fz-juelich.de/record/908609},
}