Grenville Marble Mylonites

对实验变形方解石的研究已经产生了一个 非常完整的数据集，可能适用于变形- 大理岩糜棱岩的演化过程。 然而，数据很少- 能够从天然大理石剪切带，从而限制了评估 实验室数据对自然系统的重要性。 这 项目是一个综合的微观结构研究井 中央变质沉积带保存的大理岩糜棱岩 安大略格伦维尔号。 对该剪切带的研究提供了 一个天然的实验室来检查一个畸形的 大理石，从原岩到超糜棱岩。 结果将 提供现场证据，以便比较实验结果 和自然产生的纹理，因为它适用于额外的- 实验导出的流动定律对地质的解释 条件

Studies of experimentally deformed calcite have produced a remarkably complete data set that potentially apply to deforma- tion processes in marble mylonites. However, few data are avail- able from natural marble shear zones, thus limiting assessment of the importance of the laboratory data to natural systems. This project is an integrated microstructural study of a well preserved marble mylonite from the central metasedimentary Belt of the Ontario Grenville. The study of this shear zone provides a natural laboratory to examine processes in a variably deformed marble, ranging from protolith to ultra-mylonite. Results will provide field evidence to allow a comparison of experimentally and naturally produced textures as it applies to the extra- polation of experimentally-derived flow laws to geological conditions.