Fig. 4
From: Origin and formation of carbonaceous material veins in the 2008 Wenchuan earthquake fault zone
Microstructures of the CMVs deformed by a cataclastic flow. a Movement of the fault accommodated by a cataclastic flow. b The lens-shaped clast in the cataclastic flow indicates the shear sense of the fault. Hard mineral grains (quartz, feldspar, and calcite) in gray (at the top) and pyrite (at the middle-right) occur in chains. c Chains of pyrite. Notice that no foliation forms and wraps the hard pyrite grains. The cataclastic flows intrude into void spaces in fault breccias 4 m west of the coseismic slip surface (d–e) and in a fault gouge along the coseismic slip surface (f–g). Figures 4 d–f is taken under plane-polarized light and the others under reflected light