【摘要】 郯庐断裂带经过长期的研究，取得许多成果，但在年代学上还存在严重的分歧及缺乏严格定时的证据，尤以确定走滑剪切运动的时限争纷更甚。走滑剪切运动是一个非瞬间又非均匀的过程。依据作者近年内进行的专门工作及现有的各种材料，从地质年代学及同位素年代学两方面研究成果的分析。郯庐断裂带在晚侏罗世末期（１４０Ｍａ左右）开始产生剪切破裂井大规模左行平移，直至早白垩世晚期（１１０Ｍａ左右）又有一次重要的走滑剪切运动。左行走滑运动延续约３０Ｍａ。随后郯庐断裂带进入以伸展为主的构造运动。从始新世中期（４５Ｍａ左右），它又转化为多次受挤压兼小幅度右滑的运动。更多还原

【Abstract】 Many results have been achieved after long-peried studies in the Tan-Lu fault zone. But, serious controversyremains in geochronology of the fault zone, and reliable timing evidence,especially for strike-slip movement of the faultzone,is still rare,Strike-slip movement is a neither abrupt process nor uniform process. On the basis of our recent stud-ies and other work in geological chronology and isotopic chronology of the fault zone,it is concluded that shear fracturesand large-scale sinistra strike-slip movement on the Tan-Lu fault zone started in the latest late Jurassic (abeut 140Maago).In the latest Early Cretaceous time(about 110 Ma ago),the fault zone experienced another important strike-slipmovement, the sinistral strike-slip movement on the Tan-Lu fault lasted for about 30Ma. Afterwards,the fault zonewas subjected to extension. From the Middle Eocene time,the fault zone suffered compression with small-stale dextralmovement on it many times.更多还原