The results show that (1) The silt of Sanxia of the Yangtze River in Chongqing is mainly composed of silicolites and quartz, containing Fe and Ti in small quantity and Yt, Yb and Sc in minim quantity.

• 研究表明:长江三峡重庆段淤砂是以硅质岩屑及石英为主,含有少量铁和钛,微量的稀土钇、镱及钪等成分。