Question

The law of original horizontality suggests that rock strata are always layered in a horizontal plane. If rock strata are tilted in some way, a geologic map shows the tilted rock with _____.

fault line symbols
fold axis symbols
letter symbols
strike-and-dip symbols
GPT-4o mini
If rock strata are tilted in some way, a geologic map shows the tilted rock with **strike-and-dip symbols**. These symbols indicate the orientation of the rock layers, specifically the direction of the strike (the line formed by the intersection of a rock layer with a horizontal plane) and the angle of dip (the angle at which the rock layer inclines relative to the horizontal plane).

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