Fluid Pathways in Deformation as Traced by Oxygen Isotopes

最近的工作表明，流体在岩石变形中的作用比以前认识到的要大，但是流体的影响程度并没有得到很好的限制。该项目将使用氧同位素作为示踪剂，利用氧同位素技术记录井约束构造剖面中流体的时空分布。这项工作将集中在澳大利亚Ruby Gap复式中几种不同成分的冲断片上，最近对其进行了广泛的结构研究。预计结果将提供对流体和变形机制的影响以及受同位素交换影响的岩石体积的估计。

Recent work has indicated that the role of fluids in rock deformation is greater than previously recognized, however the extent of the influence of fluids is not well constrained. This project will use oxygen isotopic techniques to document the spatial and temporal distribution of fluids in a well constrained structural sections by using oxygen isotopes as tracers. The work will focus on several thrust sheets of different compositions in the Ruby Gap duplex of Australia, which has recently been extensively studied structurally. Results are expected to provide an estimate of the influence of fluids and deformation mechanisms and the rock volume affected by isotopic exchange.