Geology Reference
In-Depth Information
(a)
Unole formed
(b)
Deformed
by slip
(c)
Deformed
by twinning
Fig. 6.1 Representation of the distinction between deformation by gliding and deformation by
twinning. The arrow represents a crystallographic direction
½
hkl
Fig. 6.2 Slip bands resulting
from glide on a {100} plane
in a \001[ direction in a
galena crystal compressed
vertically normal to an {011}
plane (width of specimen
5 mm). The concentration of
slip bands constitutes a
''deformation band'' (a copy
of Fig. 27 from Lyall
1965
)
