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Lesson Flashcards: Folds Geology


A type of fold that is concave upward and whose youngest rocks are in its core

Fold hinge point

The point of maximum curvature on a folded surface

Fold axial plane

An imaginary plane that bisects a fold into two halves that are as similar as possible


Force applied per unit area


A wavelike structure formed by the bending of any type of rock due to compressional stress

Compressional stress

The stress that squeezes something and is the stress component perpendicular to a given surface

Fold limbs

The flanks of a fold, found on both sides of the axial plane


A type of fold that is convex upward and whose oldest rocks are in its core

Fold axis

An imaginary straight line of intersection of the axial plane with the surface of all different layers

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