Geochemistry of 0.7 Ma B.P. microtektite bearing loess layers (Ⅳ)——Trace elements  

作　　者：李春来 欧阳自远 林文祝 

机构地区：[1]Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China

出　　处：《Chinese Science Bulletin》1995年第5期395-399,共5页

基　　金：Project supported by the National Natural Science Foundation of China

摘　　要：Anomalies of content of Ir, noble metals and other trace elements are usually regarded as crucial evidence of impact event. A large number of microtektites have been found in deep-sea sediments since the 1960s, but analyses of trace elements in microtektitebearing layers have seldom been reported, with the exception that Asaro et al. stated that microtektite-bearing layers in Caribbean Gulf exhibited anomaly of Ir (?). The

关 键 词：LOESS microtektite impact EVENT TRACE elements. 

分 类 号：P59[天文地球—地球化学]