RECORDS OF TWO ASTROGEOLOGIC EVENTS IN THE LOESS STRATA,LANTIAN,SHAANXI,CHINA  

作　　者：吴锡浩 徐和聆 邓寄温 殷伟德 安芷生 郑洪波 欧阳自远 

机构地区：[1]Institute of Geomechanics, Ministry of Geology and Mineral Resources, Beijing 100081, PRC [2]Xi'an Laboratory of Loess and Quaternary Geology, Academia Sinica, Xi'an 710061, PRC [3]Institute of Geochemistry, Academia Sinica, Guiyang 550002, PRC

出　　处：《Chinese Science Bulletin》1992年第11期946-950,共5页

基　　金：Project sponsored by the foundation of Xi'an Laboratory of Loess and Quaternary, Academia Sinica and by the foundation of the Laboratory of Geomechanics Ministry of Geology and Mineral Resources PRC

摘　　要：The thick loess strata in the Loess Plateau of China, which have not been essentially reformed by internal and external agents, are one of the optimum continental deposits preserving the extraterrestrial materials in the last 2.5 Ma. Thus, combining the records with the detailed data of the loess-paleosol sequence, the ages and environmental impacts of the astrogeologic events can be determined.

关 键 词：LOESS extraterrestrial MICROSPHERULE COSMIC DUST microtektite astrogeologic event 

分 类 号：N[自然科学总论]