Rare earth elements (REEs) are good geological indicators. In order to understand REEs stratigraphic significance, REEs ......

稀土元素是良好的地质指示剂，以晚二叠世黔西毕节地区可采煤层中的REE（稀土元素）为研究对象，探讨REE在煤系地层对比、划分中的应用问题......