泥河湾盆地“许家窑组”的新认识  

DISCUSSION ON THE XUJIAYAO FORMATION IN THE NIHEWAN BASIN

作　　者：王法岗[1,2] 

机构地区：[1]河北师范大学历史文化学院,河北石家庄050024 [2]河北省文物研究所,河北石家庄050031

出　　处：《地层学杂志》2015年第4期410-415,共6页Journal of Stratigraphy

基　　金：河北省重点科技支撑计划项目"东方人类探源工程--泥河湾人类起源;地质及环境背景研究"(No.13277611D)资助

摘　　要：许家窑组被认为是泥河湾层延续到晚更新世的地层单位,由许家窑文化遗址的考古发掘发现文化遗物位于泥河湾层中、且其时代为晚更新世而命名,这一地层单位自命名以来就惹来了广泛的质疑。特别是其时代与古地磁测年结果差距巨大,达几十万年。最新的考古发掘显示,该遗址的文化遗物并非出自以往认定的泥河湾层中,而是形成于其后的河流阶地之中。因而,不能以许家窑文化遗址的时代来证明泥河湾层延续到晚更新世,许家窑组失去了其存在的基础和意义,建议取消这一地层单位。The Nihewan Formation was first named by Barbour in 1924,and was determined as the marker bed of the Early Pleistocene of North China in 1948.The Xujiayao Cultural Site was discovered and unearthed in 1974,and it was suggested that the cultural relics were in the Nihewan Formation.According to the study of mammal fossils and uranium series dating of the teeth in the Xujiayao site,the age of this site is about 100,000 years.Thus,the Nihewan Formation was extended to the Later Pleistocene.In order to further divide these stratigraphic units,the Nihewan Formation in the Later Pleistocene was named the Xujiayao Formation.However,the age of the Nihewan Formation around the Xujiayao Cultural Site is Early to Middle Pleistocene according to high-resolution magnetostratigraphy.Recent excavation by the Hebei Provincial Institute of Cultural Relics in 2007—2012shows that the cultural relics are not preserved in the Nihewan Formation but in the third terrace of the Liyigou River.Thus,the Cultural Relic site is much younger than the Nihewan Formation,and it cannot be demonstrated that the Nihewan Formation extends to the Late Pleistocene.It is therefore proposed that the Xujiayao Formation be abandoned.

关 键 词：考古地层 泥河湾层 许家窑组 第四纪 许家窑文化遗址 侯家窑遗址 河北 

分 类 号：P539[天文地球—古生物学与地层学] P534.63[天文地球—地质学]