碳酸盐岩类岩石薄片的最佳定厚标准探讨

Study on thickness of the thin section of carbonate rocks

传统的薄片磨制方法，会对碳酸盐岩粒屑结构中包含的生物碎屑和包粒等造成判断及鉴定的不良影响。本文通过反复实验，确定碳酸盐岩类岩石定厚标准在0．033—0．045mm之间，可以清晰显现生物碎屑、粒屑的显微结构，对其成因及命名的准确性具有重要意义，同时结合矿物干涉色对厚度的要求等因素，综合出较实用的碳酸盐岩薄片厚度控制体系。

The traditional thin section grinding method would cause the adverse effects on the judgment and i- dentification of bioclastics and package grains bearing in the carbonate rocks. Through repeated experiments, it was found that when the thickness among 0.033 - 0,045 mm, microstructures of bioclastics and grained elastics were clearly shown, which favored accuracy naming and causing analysis. Combining With the requirements of in- terference color on thickness of the thin section, an available thickness control system of carbonate rocks was sug- gested.