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Progress in Earth and Planetary Science
Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Effects of frictional properties of quartz and feldspar in the crust on the depth extent of the seismogenic zone

Fig. 1

Cross section of the sample assembly of the triaxial deformation apparatus used in this study. A layer of ground quartz or feldspar “gouge” (~ 1 mm thick) was placed between alumina driving blocks pre-cut from an alumina cylinder (20 mm diameter, 40 mm length) at 30° to its long axis and deformed under dry or wet conditions at temperatures from room temperature (20 °C) to 600 °C. In the wet experiments, pore pressure was provided by distilled water introduced from outside the pressure vessel through holes drilled through the alumina spacers. The whole sample assembly was sealed by annealed copper tube with 0.2 mm in thickness. The sample assembly and furnace were placed inside the pressure vessel. A detailed description of the apparatus is provided by Masuda et al. (2002)

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