一次重要的第四纪构造运动及环境效应

在第四纪早更新世晚期（１．６￣１．０ＭａＢ．Ｐ），中国大陆陆发生了一次十分强烈的构造活动，造上更新世地层的普遍褶皱和断裂，并有火山活动，同时，这 一次十分重要的造貌运动，它导致了高原面的形成并整体抬升，从而奠定了中国现今地貌格局，这次构造运动地中国环境的影响是十分深刻的，它使大片处于鼎盛时期Ｎ－Ｑ１的古湖消亡，中国现今的主要水系定型，植被分布形式发生变化和气候转型。

A IMPORTANT TECTONIC MOVEMENT AND ITS ENVIRONMENTAL EFFECT IN QUATERNARY

In the late Early Pleistocene (1 6-1 0 MaB P ),a violent tectonic movement took place on the Chinese mainland,which caused the folding and faulting of Lower Pleistocene series with volcano activities In the meantime,as an important movement to build the landform,it resulted in the formation of the plateau surface and its uniform uplifting,this forming the present geomorphic pattern This movement has a significant effect on China's environment,causing the disappearance of the ancient N Q 1 lakes,the formation of the present drainage patterns,the change of the vegetation pattern and the coversion of the climate The authors think that the tectonic movement may be regarded as the lower limit of new Chinese tectonic movement In the paper,they have discussed tectonic environmental effect and tectonic marks of Quaternary limit