Foliations
The rocks have been multiply deformed. Within the matrix 3 foliations could be recognized. The most common is the main matrix schistosity S1 that lies parallel to compositional layering S0 (Figs. 4 and 5). Two younger matrix foliations oblique to bedding (S2 and S3; see map and inset stereos) were also observed. However, S3 was only recognized locally (Fig. 4). Foliations preserved as inclusion trails in porphyroblasts are commonly truncated by S1 parallel to S0 and in such cases generally appear to predate this foliation (see below).
Figure 4. Matrix foliation relationships
Field photographs and line diagrams showing the matrix foliation relationships. (a and b), The earliest schistosity (S1) parallel to bedding (S0) or compositional layering (SL) and the axial planar S2 cleavage folding penetrative schistosity S1 and pre-D2 structures. (c and d), D2 crenulating S0//S1.
Figure 5. Structural map of the area
Detailed structural map of the area showing three major matrix foliations, Sm+1 is the dominant foliation.