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A strike line with a tick, for a metamorphic fabric.
Also known as: Metamorphic fabric symbol, Foliation plane symbol
On a geological map foliation is drawn as a strike line with a dip tick, distinguished from bedding by the style of the line, and records the planar fabric produced by metamorphism rather than by deposition.
Marks the orientation of a metamorphic planar fabric at the point of measurement.
Contexts: Maps
Is distinguished from bedding because the two record entirely different histories: bedding is how the rock was laid down and foliation is what happened to it afterwards.
Contexts: Maps
A strike line with a single tick projecting down the dip, drawn in a line style distinct from the bedding symbol.