关键词: 洞庭盆地, 新构造运动, 第四系更新统, 全新统

Abstract: In this paper,by drawing up the isopach maps of series in the Quaternary system,analysed the evalution of the tectogenesis of each epoch in the Quaternary period of the Dongting Basin.In the Early Pleistocene and the Late Pleistocene,it showed opposite tilting in the east and the west,and the deposit laid down central block showed stretching to the south and the north;In the Middle Pleistocene and the Halocene because the fault blocks of thebilaterals of the Yingfeng bridge-Beijing port showed tangle-up tilting in the opposing direction,the northwest angle and the southeast angle of the basin showed tilting and it took a shape of prostrate part correspording to the major tilting part,its.stretching direction was vertical to the tilted direction of the major tilting part.

Key words: Dongting basin, Neotectonice movement, Quaternary system, Pleistocene series, Holocene series