Activity of isotopes of U, Th and Pa versus depth in bottom sediments from Co...

A sediment core from the European Basin with alternation of biogenic calcareous oozes and terrigenous sediments is studied by several methods. Isotopic age is determined by...本研究采用多种方法对采自欧洲盆地（European Basin）、发育生物成因钙质软泥（biogenic calcareous oozes）与陆源沉积物（terrigenous sediments）互层结构的沉积岩心（sediment core）开展研究；其同位素年代由……测定。