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Striation and slickenline development on quartz fault surfaces at crustal conditions: origin and effect on friction Virginia G. Toy Department of Geology, University of Otago, PO Box 56 Dunedin 9054, New Zealand.
[email protected], ORCID 0000-0002-7621-2064 André Niemeijer, Utrecht University, The Netherlands,
[email protected], ORCID 0000-0003-3983-9308 Francois Renard, Department of Geosciences, PGP, University of Oslo, Norway, and ISTerre, University Grenoble Alpes, Grenoble, France,
[email protected], ORCID 0000-0002-5125-5930 Luiz Morales, ScopeM - ETH Zürich, Switzerland,
[email protected], ORCID 00000002-8352-850X Richard Wirth, GeoForschungsZentrum Potsdam, Germany,
[email protected], ORCID 0000-0002-8798-5505
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Fragments of optically flat silica discs embedded in synthetic gouge were deformed to examine the relationship between the development of striations and slickenlines, and deformation mechanisms, conditions, and fault rheology. Experiments were performed under hydrothermal conditions in a rotary shear apparatus at 100 or 450°C, to shear strains of 2.02