周口店地区晚第三纪和第四纪地层研究已有50余年历史。1978和1979年,中国科学院组织了“北京猿人遗址综合研究”,对本区晚新生代地层的研究表明,猿人洞穴堆积除过去的13层外,又分出了第14—17层;并根据气候地层学、年代学及沉积学的研究,确定了洞内、洞外的地层层序和沉积特征。 Zhoukoudian area Late Tertiary and Quaternary stratigraphic research has more than 50 years of history. In 1978 and 1979, the Chinese Academy of Sciences organized the “Peking Man Site Comprehensive Study,” the study of the Late Cenozoic strata in this area shows that the ape cave accumulation in addition to the past 13 layers, but also separated the 14-17 layer; and according to the climate Stratigraphy, geochronology and sedimentology research to determine the cave inside and outside the stratigraphic sequence and sedimentary characteristics.