Single-Layer Buckle Folding in Non-Linear Fluids and Rocks

岩石中的褶皱是很常见的，但仍然是不完善的 明白 非常缓慢的自然应变速率和 经过极长时间的大菌株使直接的实验室 建模是不可能的 理论治疗仅充分 解释了折叠的初始阶段。 这项研究将试图 为了避免这些问题，使用二维有限- 单元模型，适当选择本构关系， 研究褶皱随时间的发展。 预测 由模型得到的形状和应变分布将 与自然褶皱的数据进行比较。 目的是提供 从自然褶皱中获取信息的标准 变形历史和岩石流变学 缓慢的自然条件。

Folding in rocks is very common, yet is still imperfectly understood. Very slow natural strain rates and development of large strains over extremely long times make direct laboratory modeling impossible. Theoretical treatment only adequately account for initial stages of folding. This research will attempt to circumvent these problems by using a two-dimensional finite- element model with appropriate choice of constitutive relation- ships to study development of folds with time. Predictions of shape and strain distribution resulting from the model will then be compared with data on natural folds. The aim is to provide criteria for gaining information from natural folds about deformational history and about rheology of rocks deformed under slow natural conditions.