Regional strata and host rocks of the Pb-Zn deposits in SW Yangtze block have high contents of Zn, Pb, and Cd, which is fundamental for the Pb-Zn mineralization and the enrichment of dispersed elements.

• 扬子地块西南缘铅锌矿床的容矿岩石及区域地层中Zn、Pb和Cd等的高背景值是铅锌成矿和分散元素富集的物质基础。