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A line marking scratches cut by moving ice.
Also known as: Ice scratch symbol, Striation direction symbol
On a geological map glacial striations are drawn as a short line marking the direction of scratches cut into bedrock by debris carried in moving ice.
Marks the orientation of scratches cut into bedrock by ice-borne debris.
Contexts: Maps
Gives the line of ice movement but not its direction, which has to be settled from other evidence such as the shape of the rock beneath.
Contexts: Maps
A short straight line drawn at the observation point in the direction the scratches run.