Stable Isotopic Studies of Fluid Flow During Low Pressure Regional Metamorphism in an Accretionary Complex, Eastern Chugach Mountains, Alaska

变质地体的物质输运理论模型提供了识别流体通过变质岩石的岩石学和稳定同位素标准，并可能提供量化流体流动模式和程度的技术。该项目将试图确定导致阿拉斯加丘加赫变质杂岩中石英脉状和~(18)O亏损的流体渗透的规模和程度。这项工作将利用莱斯大学的工作人员最近对这些岩石所做的测绘和构造工作。通过与其他类似的会聚弧缘的类比，结果应该能对流体流动在丘加赫地体热演化中的作用提供更现实的评估。

Theoretical models of mass transport to metamorphic terranes present petrologic and stable isotopic criteria for recognizing the passage of fluids through metamorphic rocks and may provide techniques for quantifying the pattern and extent of fluid flow. This project will attempt to determine the scale and extent of fluid infiltration responsible for quartz veining and 18O depletions in the Chugach metamorphic complex, Alaska. This work will take advantage of the recent mapping and structural work on these rocks done by workers at Rice University. Results should provide a more realistic evaluation of the role of fluid flow in the thermal evolution of the Chugach terrane and by analogy to other similar convergent arc-margins.