Geology Reference
In-Depth Information
(a)
(b)
Figure 3.7
Examples of: (a) Mineral alignment in porphyritic dyke, Antarctica.
(b) Mineral lamination/layering in the Dias intrusion, Dry Valleys, Antarctica
(see also Figure 2.11).
the field but will not cover all occurrences. Even if you do not recognise the
textural features of a particular hand specimen, remember that the golden rule is
to
make accurate observations backed up by field sketches as appropriate
.More
examples of these and other less frequently observed textures at the scale of
hand specimens appear later in this field guide.
