Abstract: Jiangnan fault zone, formed after middle Proterozoic, is a palaeo-fault zone controlling rocks and mineral as well as a middle-macroseismic belt(earthquake magnitude: 4³/₄—6³/₄; seismic intensity: Ⅵ-Ⅷ), which is another seismic belt south of Tonglin-Yangzhou seismic belt.

Key words: Seismic belt, Middle-lower reaches of Yangtze River, Pre-Mesozoic stratum, Aeromagnetic, Gravity, Artificial earthquake

摘要： 中元古代(17亿年前后)以来发生发展的江南断裂带,既是一条控岩控矿的古断裂带,也是江南地区一条中强地震带——江南中强地震带。震级4³/₄-6³/₄级,是铜陵—扬州地震带以南的另一条地震带。

关键词: 地震带, 长江中下游, 前中生代地层, 航磁, 重力, 人工地震