Microstructural Analysis of Steady and Non-Steady Flow in Mylonites

糜棱岩稳态和非稳态流动的微观结构分析

• 批准号: 9219390
• 负责人: Carol Simpson
• 金额: $ 12.36万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-12-15 至 1995-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219390&HistoricalAwards=false
• 关键词: Microstructural; Analysis; Steady; Non; Flow

A unifying theory has recently been developed that offers a way to determine the relative contributions of pure and simple shear to the total strain in the rock even when traditional strain markers are absent. It can explain micro- and meso-scale structures, including shear bands, forward and back-rotated boudins, and other features that were previously thought to be contradictory. This project will extend the theory by calculating the trajectories for deformable ellipsoidal porphyroclasts of varying viscosity contrast to their matrix. The theory will be tested using a suite of samples from shear zones in well-established tectonic settings. The establishment of the proposed methodology as a standard technique for structural analysis should have wide application.

最近提出了一个统一的理论， 提供了一种确定纯物质相对贡献的方法 和简单剪切力对岩石总应变的影响， 没有传统的菌株标记。 它可以解释微- 中尺度结构，包括剪切带，向前 和向后旋转的石香肠，以及其他特征 以前被认为是矛盾的。 该项目将 通过计算 变粘度椭球形变形碎斑岩 与其矩阵相反。 该理论将使用一个 一套来自剪切带的样品， 构造环境 设立拟议的 结构分析的标准方法 应该有广泛的应用。