Fig. 8From: Microtextural investigation (SEM and TEM study) of phyllosilicates in a major thrust fault zone (Monte Perdido, southern Pyrenees): impact on fault reactivationTEM image showing newly formed illite in the pressure shadow of a quartz grain. The arrows show the well-defined grain boundaries between illite crystals of different orientations Ilt illite, Qz quartzBack to article page