 Following the traditional definition, the South China Block was formed by the collision between the Yangtze Block and the Cathaysia Block in the Neoproterozoic.The unified South China Block experienced four important events in the Phanerozoic.They are called the Wuyi-Yunkai Movement (Early Paleozoic), the Emeishan flood basalt magmatism (Late Paleozoic), the Indosinian Movement (Triassic) and the Yanshanian Movement (Jurassic-Cretaceous).