Au,Hg,As,Sb,Cu,Pb,Zn and Mo are coextensive elements in the red clay profile,and they are obviously enriched in the eluvial zone where la terization is complete.

• 红色粘土的微量元素表现为Au、Hg、As、Sb、Cu、Pb、Zn和Mo等元素的共生组合,并在红土化好的残积带明显富集;