渭河盆地地处中国大地构造格局的核心位置，从始新世河湖相到第四纪风成黄土，新生代地层连续而完整，且富含古生物和古人类化石，为世界所罕见。虽然前人对渭河盆地新生界开展过大量地层学研究，但是限于年代久远（20世纪50-70年代）且手段单一（主要为生物地层学方法），对本区地层的年代认识迄今仍存在很大争议，而且早期研究还缺少详细物源分析，极大地限制了进一步的盆地演化研究，甚至影响到渭河盆地－秦岭新生代构造和沉积体系的全面认识。鉴于此，本项目拟利用磁性地层学与生物地层相结合的方法，对渭河盆地南缘新生代地层进行准确的年代厘定，并基于单矿物碎屑锆石U-Pb年龄进行详细的物源示踪分析，为进一步开展盆地演化和盆山耦合研究提供关键依据。

The complete Cenozoic stratigraphy in the southern Weihe Basin comprises mammal fossils, ancient human fossils and the thick fluvio-lacustrine-eolian sediments. The well preserved Cenozoic stratigraphy in the area provides a continuous geological record to explore the evolution of the Weihe Basin and its connection to the much older Qinling Mountains, which borders the south. However, there is much controversy in the chronostratigraphy, which is the bottleneck for past research of the basin. In view of this situation, the project focuses on the Cenozoic chronostratigraphy and provenance of southern Weihe Basin. By combining magnetostratigraphy and mammal fossils, a detailed chronology of Cenozoic stratigraphy will be established. Based on the chronostratigraphy, we attempt to reveal the temporal variation of the sediment source, as well as sediment transport mechanisms by the detrital zircon U-Pb age. Further, the evolution of the Weihe Basin will be discussed.