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综述了国外扫描电镜—阴极发光(SEM-CL)成像技术在岩石学研究中的应用实例。采用阴极发光探测器和扫描电镜结合的方法对石英等矿物进行观察,可以在高放大倍数和高分辨率下获得其他方法所无法揭示的丰富的微结构信息,如暗条痕和斑块、愈合裂纹、环带、复杂剪切纹、面状结构等,这些不同的微结构成为不同类型岩石中所特有的特征,因此,对沉积岩物源示踪具有较重要的参考价值。岩浆岩及热液石英中所显示的穿插结构、溶解结构、重结晶结构反映矿物多期生长和改造过程,指示岩石形成的物理和化学条件,为岩石成因探讨、岩浆演化以及成矿过程等方面的研究提供重要依据。同时,SEM-CL图像可以清晰地揭示沉积岩中石英胶结物的生长过程,从而为沉积岩的成岩历史提供了重要信息。
The application examples of SEM-CL technique in petrology are summarized. The combination of a cathodoluminescence detector and a scanning electron microscope allows the observation of quartz and other minerals to obtain abundant microstructural information that can not be revealed by other methods at high magnification and high resolution such as dark streaks and plaques, healing Cracks, annuli, complex shear lines and planar structures. These different microstructures have become peculiar features of different types of rocks. Therefore, it is of important reference value for sedimentary source tracing. The interspersed structures, dissolved structures and recrystallized structures shown in magmatic rocks and hydrothermal quartz reflect the multi-stage growth and remodeling processes of the minerals and indicate the physical and chemical conditions for the formation of the rocks. This is for the exploration of rock genesis, magmatic evolution and mineralization processes Research provides an important basis. Meanwhile, SEM-CL images can clearly reveal the growth of quartz cements in sedimentary rocks, which provides important information for the diagenesis history of sedimentary rocks.