Geometrical adjustments during rotation of a Jura fold limb
Geometrical adjustments during rotation of a Jura fold limb
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Jura 褶皱肢体旋转期间的几何调整
DOI：
10.1016/0040-1951(76)90109-8
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发表时间：
1976
期刊：
影响因子：
2.9
通讯作者：
H. Laubscher
中科院分区：
文献类型：
--
作者：
H. Laubscher
汝拉褶皱不像连续分布的屈曲模型，它们从来不是正弦曲线。相反，它们可以近似为离散的，外部旋转的共轭扭结带与圆形铰链。观测的细节是混乱的，良好的露头是有限的，然而，几种类型的几何调整必要的生长过程中（特别是外部旋转）的各种基本扭结模型可能与观察到的功能。对褶皱生长进行建模和对不同尺度上的观测结果进行解释的合适方法似乎是通过不同程度地混合不同的旋转和调整模式来拟合各个褶皱。起主导作用的是不同重要性的不合格层，从而产生几种类型的不协调褶皱。
Jura folds do not resemble models of continuously distributed buckling; they are never sinusoidal. Rather, they may be approximated by discrete, externally rotated conjugate kink bands with rounded hinges. Observational details are confusing, and good outcrops are limited; however, several types of geometrical adjustments necessary during growth (particularly external rotation) of a variety of elementary kink models may be plausibly correlated with observed features. The suitable way to the modeling of fold growth and an explanation of observations on different scales seems to be through synthesis of different modes of rotation and adjustment mixed in varying degrees to fit individual folds. A dominant role is played by incompetent beds of variable importance giving rise to several types of disharmonic folding.