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对大荔人化石埋藏地点的地貌、沉积地层剖面层序的调查和气候年代学研究表明,大荔人所在地层剖面是由上部的黄土-古土壤序列和下部的河流相砂砾层组成,而在上部黄土-古土壤序列中发育有相当于黄土高原的黄土L1,古土壤S1,黄土L2和古土壤S2的地层;含大荔人化石的地层位于古土壤S2之下13m处的河流相地层中.根据黄土-古土壤的红外释光（IRSL）测年、大荔人化石层的贝壳化石电子自旋共振（ESR）测年和哺乳动物牙齿化石的铀系测年等多种技术测年的综合结果,认为大荔人化石所在地层的年龄应大于距今约260ka和小于距今约350ka,比较合理的估计应为距今260～300ka.
The investigation on the geomorphology of the buried fossil sites in Dali area and the sequence stratigraphy of sedimentary stratigraphy and the climatic chronology indicate that the stratigraphic profile of Dali people is composed of the loess-paleosol sequence in the upper part and the gravel layer in the lower part of the river facies. In the upper loess-paleosol sequence, loess L1, palaeosol S1, loess L2 and palaeosol S2 are developed in the Loess Plateau. The strata of DaLi human fossils are located in the fluvial facies at 13 m below the S2 According to the IRSL dating of loess - paleosol, the shell fossil electron spin resonance (ESR) dating of fossil from Dali, and the dating of mammalian fossils by uranium dating According to the results, the ages of the fossils in the Dali area should be greater than about 260 ka and less than about 350 ka. The more reasonable estimate should be 260 ~ 300 ka.