A comprehensive study of oxygen,hydrogen and carbon isotope geochemistry has been carried out for ultrahigh pressure metamorphic rocks in the Dabie orogen. A number of stable isotope anomalies have been discovered for the rocks.
通过对大别造山带超高压变质岩的氢、氧和碳同位素地球化学研究，发现了显著的稳定同位素异常。
参考来源 - 大别造山带超高压变质岩稳定同位素地球化学The fuzzy inference systems of surrounding rock classification for sedimentary rocks、igneous rocks and metamorphic rocks are established by way of fuzzy logic inference workbox in Matlab.
运用MatLab模糊逻辑工具箱，分别构建了沉积岩、变质岩、岩浆岩隧道围岩级别的模糊推理系统。
参考来源 - 山区高速公路隧道围岩分级方法及应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Igneous and metamorphic rocks are more compact, commonly crystalline, and rarely contain spaces between grains.
火成岩和变质岩比较致密，通常是结晶性的，颗粒之间很少有空隙。
Some very ancient sediments were no longer recognizable, having been converted to igneous and metamorphic rocks in the course of mountain building.
在造山的过程中，一些非常古老的沉积物已被转化为火成岩和变质岩，已经无法辨认了。
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