Stable Isotope Geochemistry of Pseudotachylyte: Constraintson the Conditions and Mechanism of Frictional Fusion During Brittle Faulting

摩擦融合发生在高应变率事件中，并由假羟基酸盐记录。因此，这种材料可能提供目前难以获得的脆性断裂过程的几个参数的信息，例如获得的摩擦温度、断裂过程中流体的存在以及淬火前获得的元素和同位素再平衡的程度。本研究将利用电子微束技术和激光加热同位素方法来检测天然和合成假羧酸盐中的这些因素。结果有可能对参与摩擦融合的因素产生重要的见解，因此可以为理解高应变率或孕震状态下脆性断层的行为提供工具。

Frictional fusion occurs during high strain-rate events and is recorded by pseudotachylyte. Thus potentially, this material may provide information on several parameters of the brittle faulting process that are currently difficult to obtain, such as frictional temperature attained, the presence of a fluid during faulting and degree of elemental and isotopic reequilibration attained `efore quench. This research will utilize electron microbeam techniques and laser heating isotopic methods to examine these factors in natural and synthetic pseudotachylyte. Results have the potential of yielding significant insight into the factors attending frictional fusion, and therefore could provide a tool for understanding the behavior of brittle faults in the high strain-rate or seismogenic regime.