1
2
3
4
a
b
c
d
5
6
7
8
8
9
10
11
12
13
5
4
3
1
2
Fig. 12.1 Most common structural trap types. (a) Trap types
(folds and thrusts) associated with contraction. There can be a
close genetic relation between contractional structural traps so
that one type (e.g. a symmetrical fold) may be an early stage of
320
R.H. Gabrielsen