3D fold growth in transpression

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• 作者：Marcel Frehner ; ^{marcel.frehner@erdw.ethz.ch}
• 关键词：Buckle folds ; Transpression ; Fold growth ; Hinge migration ; Fold rotation ; Zagros fold-and-thrust-belt
• 刊名：Tectonophysics
• 出版年：2016
• 出版时间：14 December 2016
• 年：2016
• 卷：693
• 期：part_PB
• 页码：183-196
• 全文大小：2346 K
• 卷排序：693

文摘

3D fold growth comprises amplification, elongation, and sequential growth. Fold structures maintain a lateral aspect ratio of ≈ 1, occupying a circular area. Fold axes initiate and actively rotate with the major principal strain axis, λ→max. Hinge migration depends on convergence angle α; it is more marked for simple-shear. The relation between α, strain, and fold orientation is independent of viscosity.