Geoscience Reference
In-Depth Information
Figure 8.27
Sketch from
a fi eld notebook showing
lower-strain zone near quartz
vein where main foliation
(S3) can clearly be seen to
be a crenulation of an
earlier schistosity (S2).
(Notebook of Tom W.
Argles, The Open University,
UK.)
8
Figure 8.28
Sketch of
albite porphyroblasts with
curved, oblique included
fabric, wrapped by foliation
(S2) that is itself also tightly
folded, with a weak axial-
planar fabric (S3). (Notebook
of Tom W. Argles, The Open
University, UK.)
