Geoscience Reference
In-Depth Information
10
(a)
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Figure 10.7
(a) A fi eld map of an area in the English Lake District.
Exposures are coloured, but not outlined or labelled with a unit code.
Annotation is sparse, but includes some comments on vegetation and
landscape features relevant to the underlying geology (depressions,
scarps, marshy ground). (b) Magnifi ed portion of an adjacent fi eld map,
showing a strike line symbol plotted at locality number 46. The strike line
is accurately plotted, with a short tick indicating dip of the stratum to the
southeast at 12°, and the exposure has been outlined using a thin black
pen line. This map could be improved by using colour to distinguish
mapping lines better from the base map, and by ringing the locality
number for clarity. (c) A fi eld map from a brief mapping exercise in
Scotland. Locality numbers are ringed, and their location given by arrows.
Detailed notes compete with structural symbols for space, and the map is
rather congested. Such notes could be reserved for the fi eld notebook
alone in most mapping situations. (a and b: Extracts from fi eld maps of
Tom W. Argles, The Open University, UK. c: Extract from fi eld map of
Angela L. Coe, The Open University, UK.)
