Geology Reference
In-Depth Information
Figure 2.2
Example of field notebook layout (example from Lorraine Field, Isle
of Rum, Scotland).
Figure 2.6) or more formally on specifically designed graphic logging paper.
Volcaniclastic sequences particularly lend themselves to graphic logging (for
example, Figure 2.7), but also lava sequences, layered igneous rocks (see
Chapter 8) and even igneous/metamorphic lithostratigraphic relationships can
all be recorded using some form of graphic log.
2.4 Primary Outcrop Structures
When considering an outcrop there are a variety of structures that can be
recorded by annotated sketches, measurements and notes. A number of primary,
late stage and secondary structures are likely to be present in any outcrop.
Here we consider primary outcrop structures before looking at late stage and
secondary structures.
