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引言 沉积岩和变沉积岩中的碳质随着成岩作用和变质作用的加深而重结晶成石墨结构并达到完全有序的石墨。这种重结晶作用称为石墨化并可用X射线粉晶衍射仪测定。有些研究者确定石墨化主要取决于温度,并可用于研究变沉积岩区域的地热构造。尽管石墨化作用这样有用,但认为测量石墨化度复杂,故在沉积岩和变质岩岩石学中未得到广泛应用。在此,我推荐一种由日本科学振兴会(JAAS)提出的简单易行的X射线衍射方法。
Introduction Carbonaceous sediments and metamorphic sediments with the diagenesis and metamorphism deepened and recrystallized into graphite structure and to achieve a fully ordered graphite. This recrystallization is called graphitization and can be measured by X-ray powder diffraction. Some researchers have determined that graphitization depends mainly on temperature and can be used to study the geothermal structure in the metasedimentary area. Although graphitization is so useful, it is thought that measurement of graphitization is complicated and therefore not widely used in sedimentary and metamorphic petrology. Here, I recommend a simple and easy X-ray diffraction method proposed by Japan Society for the Promotion of Science (JAAS).