According to the lead isotopic model ages and geologic characteristics of the ore deposits, two main types of Pb-Zn deposits can be classified in SW Yangtze block, i.e., the Mississippi valley type (MVT) and the sedimentary exhalative (SEDEX) type.

• 综合矿石铅同位素模式年龄和矿床产出的地质特征，初步厘定出扬子地块西南缘存在着两种不同成因类型的铅锌矿床，即MVT型和SEDEX型。