The rare earth element (REE) geochemical composition of sediments from two cores were used to investigate the provenance......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

The present paper recorded the occurrence of laterites-bearing REEs in Natash area.Natash laterite deposits occur as hor......

对东太平洋中国多金属结核调查区表层非钙质沉积物中的粘土组分进行了粘土矿 物、稀土元素(REEs)及钕(Nd)同位素测定. 结果表明, M......

借助可消幺半群上的正规Rees矩阵半群的半格建立了超富足半群的代数结构.这一结果不仅给出了超富足半群的一种构造方法,而且推广了......