facing direction

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The direction (upward or downward) in which the stratigraphy throughout most of a fold becomes progressively younger. Anticlines face upwards, by definition; antiforms may face upwards or downwards depending on the direction in which the stratigraphy is younging. It may be determined by such ‘way-up’ criteria as graded bedding, sole structures, and cross-bedding.

Subjects: Earth Sciences and Geography.

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