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A lettered line marking where a section is drawn.
Also known as: Section line geology, Profile line symbol
On a geological map a cross-section line marks the line along which a vertical section has been drawn, lettered at each end to match the section drawing.
Marks the line along which a vertical geological section has been constructed.
Contexts: Maps
Turns a two-dimensional map into a three-dimensional interpretation, since the section shows what the mapper believes lies beneath the line.
Contexts: Maps
A straight line across the map with a letter at each end, matching the labels on the corresponding section drawing.