Abstract: Some debets,about some structures in the Yangtze valley to the east of the Zhe-njiang area,have been often focused on these two problems: 1) does"Yangtze fault zone" exist along the Yangtze valley? and 2) is it a contemporary continental rift valley? By means of field investigations of the tectonics of the lower Yangtze valley and research of various materials,the authors have concluded the scarps along the Yangtze banks beneath the Zhenjiang area are not real and the large faults do not go through Yangtze valley,instead of being a syncline in the Yangtze valley along the Jiangyin-Shazhou-Jingjiang area.Besides,the physiographic history of the Yangtze delta and characteristics of the geophysical fields,especially gravity field and the characterristics of volcanic and seismic activities,all illustrate that "Yangtze fault zone" does not exist along Yangtze valley beneath the Zhenjiang area nor the contemporary continental rift valley.

摘要： 镇江以东长江河谷构造一直是个有争议的问题。本文从地貌、构造、建造、物理场、火山作用和地震活动等方面,说明江苏省江阴、沙洲、靖江、南通一带长江河谷不存在“长江断裂带”,当然,更不存在长江“现代大陆裂谷带”。