کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4734137 | 1357074 | 2006 | 12 صفحه PDF | دانلود رایگان |
An earlier nonlinear model for two-layer parallel folding with bedding plane slip is extended to embrace serial buckling behaviour. Approximating the folds using two cubic B-splines, a quasi-energy formulation admits both synchronous and serial-type buckling under conditions of both controlled load and controlled end-shortening. In the early stages of evolution, non-periodic saddle points, corresponding to localized folds, are found to provide the preferred solution. However, as the end-shortening increases, the saddle points converge with unstable maxima representing synchronous folding, until only periodic solutions exist. This shift from localized to two-hump periodic behaviour is seen as a primitive exposition of the more general theme of serial or sequential fold formation.
Journal: Journal of Structural Geology - Volume 28, Issue 3, March 2006, Pages 444–455