• 责任者：Wei Qi (Laboratory of Human Evolution ; Institute of Vertebrate Paleontology and Paleoanthropology ; Chinese Academy of Sciences ; Beijing 100044 ; China) ; Wu Xiujie
• 刊名：Journal of Stratigraphy
• 出版年：2011
• 卷期：35(2)
• 关键词：旧石器时代 ; Paleolithic ; 古人类 ; fossil man ; 山西 ; Shanxi Province ; 河北 ; Hebei Province
• 页码：p.193-199
• 图表：38 refs.
• 分类号：1400
• issnNo：ISSN0253-4959
• isbnNo：CN32-1187/P

///The Xujiayao site in the Nihewan Basin is an important paleoanthropological site in China and in East Asia. According to biostratigraphic data, the complex of cultural layers should be assigned to the Late Pleistocene and was named the “Xujiayao Formation”. It has yielded the most abundant paleoanthropological, Paleolithic and paleontological data in the Nihewan Basin. The assumptions underlying the sampling method used in paleomagnetic studies in the Nihewan basin have revealed severe inherent problems, including the lack of the Brunhes-Matuyama reverse event. It is therefore difficult to date Late Pleistocene sites using the paleomagnetic method. A paleomagnetic date of the Xujiayao site to the late Early to early Middle Pleistocene, based on the belief of the Brunhes-Matuyama boundary beneath the cultural horizon and the assumption of sedimentary accumulation rates, is not convincing. The paleomagnetic age was calculated from an averaged sedimentary accumulation rate, which assumed the deposition of strata through a constant process in different sections throughout the time of deposition.