In the Nanjing-Wuha area Mesozoic volcanic basin there occur volcanic and intrusive rocks. Volcanic rocks are mainly basaltic trachyandesite, trachyandesite, and trachyte, with small amounts of andesite and phonolite. Characterized by high potassium and rich alkali, the volcanic rocks are defined as shoshonite. Dominated by gabbro-diorite porphyrite-gabbro-diorite, intrusive rocks are characterized by high sodium and low silicon, together with the existence of gabbro and granite. According to geological and Nd, Sr, Pb isotopic data, intrusive rocks and volcanic rocks belong to the same magmatic series formed by magmatic differentiation (mainly crystallization fractionation) in a low-degree hybridization environment when alkaline basaltic magma intruded into the upper crust after low-degree AFC mixture in the lower crust.