Variation of Cr/Cu Ratios in Zhongba Profile and Its Indication on Palaeo-environment over Last 5 ka
LI Zhong-xuan, ZHU Cheng, ZHU Qing, MA Chun-mei, ZHANG Guang-sheng, OUYANG Jie
SCIENTIA GEOGRAPHICA SINICA . 2008, (6): 799 -803 .  DOI: 10.13249/j.cnki.sgs.2008.06.799