广泛分布于贵州省东北部地区一些褶皱构造周边的上震旦统—下寒武统地层中分布着一套由黑色、深灰色炭质页岩、薄层硅质岩、灰岩组成的富含硫化物和有机质的“黑层”[1],其实也是黑色岩系的一种,该层中含有较丰富的钒、铀、磷、钼、镍等矿产。贵州地质局101地质队对黔东(指镇远 Widely distributed in the upper Sinian-Lower Cambrian strata around some fold structures in the northeastern Guizhou Province, there is a rich set of black, dark gray carbonaceous shales, thin siliceous rocks and limestone Sulfur and organic “black layer” [1], in fact, is a black rock series, which contains rich vanadium, uranium, phosphorus, molybdenum, nickel and other minerals. Guizhou Geological Bureau 101 geological team of Qiandong (referring to Zhenyuan