Development and application of omphacite geo-speedometer: An integrated study of natural omphacitic pyroxenes

利用高分辨显微镜和激光拉曼光谱研究了高品位蓝片岩和低温含水榴辉岩中天然绿辉石的亚微米级结构。这项研究证实了石榴石斑岩中未变形的绿辉石反相域大小具有很高的地球测速潜力。然而，要应用这种方法，还需要进一步了解低温变质岩中绿辉石和石榴石的不平衡生长。

Submicron-scale structures of natural omphacitic pyroxenes in high-grade blueschists and low-temperature hydrous eclogites were examined using high resolution microscopy and laser Raman spectroscopy. This study confirmed that the anti-phase domain size of undeformed omphacite within garnet porphyroblast had high potential for geospeedometer. However, inorder to apply this method, further understanding of disequilibrium growth of omphacite and garnet in low-temperature metamorphic rocks are required.