contact
Cover
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.
Click on the images to launch
Noddy
. A
legend
is provided at the end of this page.
Link
Block
Gravity
Magnetics
Magnetics
Magnetics at Pole
Magnetics at Pole 1VD
Sinusoidal Folds
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
This model was generated using a similar fold style, so there is some hinge thickening relative to the limbs.
Chevron Folds
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
Asymmetric Folds
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
The west limbs of this fold are structurally thickened.
Box Folds
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
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
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
Buckle Fold
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
LOAD JPEG IMAGE
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