carbonaceous shale

基本解释

Thin layers of sandy shale, and carbonaceous fragments are locally present.
局部出现砂质页岩薄层和碳质碎屑。
Gold mineralization of the zone is confined only to the Cambrian carbonaceous shale overlain by siliceous rocks, and apparently controlled by a premineral tough shear zone.
该“潜伏”脉带的金矿化限于寒武系以硅质岩为顶板的碳质页岩中，明显受成矿前产生的韧性剪切带控制。
In the paper, there is an introduction of the technology of calcinating portland clinker in the mechanical shaft kiln using carbonaceous shale partly in place of clay batch .
介绍了用碳质页岩替代部分黏土配料，在机立窑上煅烧硅酸盐水泥熟料的技术。