Lesson Flashcards: Folds

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Definition

Fold axis

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

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Definition

Anticline

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

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Definition

Fold limbs

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

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Definition

Compressional stress

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

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Definition

Fold

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

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Definition

Stress

Force applied per unit area

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Definition

Fold axial plane

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

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Definition

Fold hinge point

The point of maximum curvature on a folded surface

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Definition

Syncline

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

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