Abstract

Students of structural geology have used Busk's concentric-arc method to reconstruct flexure (or parallel) folds, for although the smooth curves produced by this graphic construction may be no more realistic than those produced by other means, since real folds may not be strictly geometric, the method's geometrical elegance and reproducibility have made it widely popular. Where 2 or more dips refer to a particular horizon, as is more likely the case in an actual field problem, geometric reconstruction of the intervening fold or folds becomes "a somewhat complex matter." Once the complete construction, as outlined and described, is fully understood the solution is not so complicated, and can be made simpler in some cases.

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