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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.
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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
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© 1998-2002
AGCRC
&
Mark Jessell
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Ian Brayshaw