Flow, deformation, and transport - Physical Processes in Earth and Environmental Sciences - page 178

1.5

Class 1A

1A

1B

1.0

1C

t a

Class 1B

0.5

2

3

0.0

0 30 60 90

a

Class 1C

3.0

1A

1C

2.0

1B

T a

2

1.0

3

Class 2

Class 3

0.0

0 30 60 90

a

Fig, 4.121 Classes of folds described in Ramsay's classification in relation to changes in dip isogons, orthogonal thickness, and axial trace
thickness.