NEUTRON ACTIVATION STUDY OF REE ABUNDANCES IN BIOGENIC APATITE ACROSS THE CAMBRIAN//ORDOVICIAN BOUNDARY  

作　　者：柴之芳 马淑兰 赵振华 赵惠兰 毛雪瑛 马建国 周瑶琪 

机构地区：[1]Institute of High Energy Physics, Academia Sinica, Beijing [2]Guiyang Institute of Geochemistry,Academia Sinica

出　　处：《Chinese Science Bulletin》1989年第10期856-859,共4页

摘　　要：The biogenic apatites, like inarticulata and conodont, can be used as indicators in the study of sedimentary paleoenvironment, since they are highly enriched in REE and bring the elemental geochemical signature of primitive marine sedimentary environment. However, analytical methods with high sensitivity are indispensable to determine the REE abundances in such small fossil samples, usually several to tens of micrograms in weight. Recently, CHEN Jun-yuan et al. analyzed the

关 键 词：REE the Cambrian/Ordovician inarticulata and CONODONT neutron activation analysis. 

分 类 号：N[自然科学总论]