Peer-Reviewed Journal Details
Mandatory Fields
Mulchrone, K. F.
1991
Journal of Structural Geology
The Interpretation of Fold Axial Data from Regions of Polyphase Folding
Validated
()
Optional Fields
13
33
275
280275
A region with two interfering fold phases is considered. If it is assumed that the early (F(n)) and later (F(n+1)) fold phase are cylindrical and that F(n+1) formed by shear folding, then it is shown how the a- and b-directions of F(n+1) can be determined. A technique for determining the original orientation of F(n) and 'S(n) is presented provided that similar amounts of simple shear occurred on opposing limbs of F(n+1) folds. The cause of variability in fold axial orientations is investigated and information to be extracted from fold axial distributions is presented.A region with two interfering fold phases is considered. If it is assumed that the early (F(n)) and later (F(n+1)) fold phase are cylindrical and that F(n+1) formed by shear folding, then it is shown how the a- and b-directions of F(n+1) can be determined. A technique for determining the original orientation of F(n) and 'S(n) is presented provided that similar amounts of simple shear occurred on opposing limbs of F(n+1) folds. The cause of variability in fold axial orientations is investigated and information to be extracted from fold axial distributions is presented.
0191-81410191-8141
://A1991FF25300003://A1991FF25300003
Grant Details