EVALUATION OF THE GENESIS OF ZIRCONS AND U-Pb ISOTOPIC DATING
xie guiqing 1; 2 ; hu ruizhong 1; jiang guohao 1; 2 ; zhao junhong 1; 2 (1. institute of geochemistry; chinese academy of sciences; guiyang 550002; 2. graduate school of chinese academy of sciences; beijing ; 100039)
PROGRESS IN RESEARCH ON THE PALEO-ENVIRONMENT OF KARST STALAGMITE
zhang zhaofeng 1; 2 ; peng zicheng 1; 3 ; he jianfeng 1; xia xiaoping 1; cai yanjun 3; liu weiguo 3 (1. department of earth and space sciences; university of science and technology of china; hefei 230026; 2. institute of surface geochemistry