这些绿帘石呈自形晶,普遍发育熔蚀结构,部分具褐帘石核。
Most of these epidotes are idiomorphic, and they are featured frequently with melting corrosion structure and occasionally with allanite-rich cores.
石制品中有典型的楔形、船底形石核;工具有长身圆头刮削器、雕刻器和锛形器等。
Among them boat or cuneiformed cores and stone tools such as long scrapers with round edges, engravers and adze-shaped blades are found largely.
从生物岩的角度提出深海锰结核(锰质核形石)的描述方法及所用术语。
The method and terminology for describing pelagic manganese nodules (oncolites) have been suggested based on their biogenic origin.
应用推荐