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Fig. 1 | Earth, Planets and Space

Fig. 1

From: Viscous strengthening followed by slip weakening during frictional melting of chert

Fig. 1

Representative high-velocity frictional behavior of chert. a Experimental results showing the friction coefficient (black), axial displacement (blue), and normal stress (green) versus slip displacement. be Images captured using the digital video camera. Locations are shown in (a). b Wear materials are extruded after the initial slip weakening. c Reddish melt patches developed during slip strengthening. d Melt layer growth before second slip weakening. e Melt squeezing following the second slip weakening

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