COLLABORATIVE RESEARCH: Dynamic Recrystallization: Microstructural Constraints on the Dynamics and Kinematics of Tectonic Processes

9725622 Tullis了解岩石的变形历史和变形机制是构造地质学和构造学的主要目标。一些研究侧重于实验确定的岩石变形条件，另一些研究则是在自然变形的岩石中进行观察。这项合作提案是独一无二的，因为它将在实验室工作的科学家与那些在该领域工作而享有很高声誉的科学家聚集在一起。到目前为止，这项合作将解决从实验的高应变率到自然样品的较慢应变率的外推问题。这项研究的结果将直接关系到了解石英和橄榄石中变形的自然条件，特别是位错蠕变的自然条件。由于这些矿物分别是地壳和上地幔的主要成分，我们将更好地了解地壳和岩石圈的变形过程。

9725622 Tullis Understanding the deformation history and deformation mechanisms of rocks is a major goal of structural geology and tectonics. Some studies have focused on experimentally determined conditions under which rocks deform, and others have made observations in naturally deformed rocks. This collaborative proposal is unique without it brings together scientists who have worked in the laboratory with those who have strong reputations for their work in the field. This collaboration will so far to solve the problem of extrapolating from high strain rates of experiments to the slower strain-rates of natural samples. The results of this study will bear directly on understanding the natural conditions of deformation, especially those of dislocation creep, in quartz and in olivine. Because these minerals are major components of the crust and upper mantle, respectively, we will understand much better the processes by which the crust and lithosphere deform.