Karner, Karner, S. L. ; Marone, C. 1998 The effect of shear load on frictional healing in simulated fault gouge Geophys. Res. Lett. Vol. 25 , No. 24 , p. 4561 S. L. ; Marone, C. 1998 The effect of shear load on frictional healing in simulated fault gouge Geophys. Res. Lett. Vol. 25 , No. 24 , p. 4561