许家窑-侯家窑遗址地层穷究

许家窑-侯家窑遗址是中国旧石器时代中期一处重要的考古遗址,出土的化石“许家窑人”属于早期智人.按照现行地层古生物学常规判断,其地层应该属于上更新统.目前,许家窑组是泥河湾盆地乃至东亚地区发现的上更新统包含古人类及其旧石器文化遗物和古哺乳动物化石相当丰富的一个地层剖面,但断代存在理念误区.

Approach to Stratigraphy of the Xujiayao-Houjiayao Site in Nihewan Basin, China

The Xujiayao-Houjiayao site,called the Xujiayao site for short,is an important Middle Paleolithic site in North China.The "Xujiayao Man" fossils unearthed from the site were identified as archaic Homo sapiens.On the basis of the stratigraphic paleontological approach,the Xujiayao fauna was assigned to the early Late Pleistocene and the cultural layers containing Paleolithic remains should therefore belong to the Late Pleistocene.Up to now,the Xujiayao Formation in which the Xujiayao site is embedded is the stratification that has yielded the most abundant paleoanthropological,Paleolithic,and paleontological data known in the Nihewan Basin.There has been a misunderstanding about the paleomagnetic dating of the Xujiayao site as it is misleading to determine the age of a Paleolithic archeological site by calculating the average rate of sediment accumulation,because all the stratigraphic sections with human remians are not represented as uniform sedimentary sequences.