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2.1.1 Variation in fold profile


This sequence shows the affect of varying the fold profile geometry for a 200 m thick layer.

All block diagrams are viewed from SW.

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Link
Block
Gravity
Magnetics
Magnetics
Magnetics at Pole
Magnetics at Pole 1VD
Sinusoidal Folds

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This model was generated using a similar fold style, so there is some hinge thickening relative to the limbs.
Chevron Folds

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Asymmetric Folds

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The west limbs of this fold are structurally thickened.
Box Folds

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These folds are actually formed as a result of conjugate kink sets, and results in the thickening of the limbs relative to the hinges.
Anticlinoriums & Synclinoriums

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Buckle Fold

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This fold has uniform limb and hinge thickness, but still shows anomaly peaks at the hinges.

Key
Survey Parameters
Scales
layer
k = 10-2
background
k = 0
image width
10,000 m
Inclination
-50° or -90°
Intensity
50,000 or 70,000 gamma
Flight height
80 m

max



min

max



min

All models created using
Noddy
Copyright © 1998-2002 AGCRC & Mark Jessell

WWW conversion by Ian Brayshaw