中子活化法研究印度洋深海岩心中26种元素的某些地球化学行为

NEUTRON ACTIVATION STUDIES OF THE GEOCHEMICAL BEHAVIOURS OF 26 ELEMENTS IN DEEP-SEA DRILL CORE SEDIMENTS FROM THE INDIAN OCEAN

用中子活化分析法研究了一组印度洋深海钻孔样品中的26种元素地球化学行为,这些元素是Fe、Co、Cr、Na、K、Rb、Cs、Ca、Sr、Ba、U、Th、La、Ce、Nd、Sm、Eu、Tb、Yb、Lu、Zr、Hf、Sb、Ta、Sc和Au,给出了它们的浓度垂直分布特征,表现为典型的深海碳酸盐型沉积物,并讨论了它们的富集系数和停留时间。

The geochemical behaviours of 26 elements in deep-sea drill core sediments from the In-dian Ocean have been investigated with INAA, including Na, K. Ca, Sc, Cr, Fe, Co, Rb, Sr, Zr, Sb, Cs, Ba, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu, Hf, Ta, Au, Th and U. Their distribution patterns with depth are also discussed. In terms of the enrichmen factors of the respective ele-ments, their residence time in the sea has been calculated by the least squares fittin gand are compared with the previous result.