青藏高原东北缘处于青藏高原与黄土高原的交接部位 ,为环境变化敏感带。通过系统的沉积环境、构造运动与古气候演化的较高分辨率研究 ,划分了第三纪以来的构造—气候作用下的 17个沉积层序和古气候演化的七大阶段 ,将研究区的地质事件与同期的柴达木盆地干旱植物、珠江口和渤海湾海平面、大西洋深海氧同位素演化阶段对比研究表明 ,区域重大地质事件具有可比性 ,同时具有很好的第三纪时期全球变化意义。 The northeastern margin of the Qinghai-Tibet Plateau lies in the junction of the Qinghai-Tibet Plateau and the Loess Plateau, and is the sensitive zone for environmental change. Through systematic sedimentary environment, higher resolution studies of tectonic movement and palaeoclimate evolution, the authors divide the 17 sedimentary sequences and palaeoclimate evolution under the tectonic-climatic regime since the Tertiary into seven stages, The geological events and the contemporaneous Qaidam Basin arid plants, the Pearl River Estuary and the Bohai Bay sea level, the comparative study of Atlantic deep-sea oxygen isotopic evolution stage shows that the regional major geological events are comparable, but also has a good significance of the global changes in the Tertiary period .