泥河湾盆地半山早更新世旧石器遗址初探

半山旧石器遗直位于河北省张家口市阳原县泥河湾盆地东端，埋藏在泥河湾层里。它与工不谷蛇早更新世旧石器遗址以一条正断层相隔。分别在断层的上盘和下盘。半山遗址的位置比东谷索遗址低７０余米，但根据野外观察，二者的地层层位大致相当。半山遗址发掘近２平方米，获得９５件石制品和一些动物化石。初步分析，半山的石制品和东谷索的非常相似，它们应该属于同时期的产物。

BANSHAN PALEOLITE FROM THE LOWER PLEISTOCENE IN THE NIHEWAN BASIN IN NORTHERN CHINA

Banshan paleolithic site discovered in the Nihewan Formation in a Lower Pleistocenc context in 1990 is located northwest of the Donggutuo site in the Nihewan Basin in northern China. The site is situated over 70 meters below the Donggutuo site and located in the hanging wall of a normal fault named the Brown Fault Where the vertical displacement is about 75 meters. The culturalassemblage includes 95 stone artifacts and some fossil bone fragments with cut marks. The artifacts are excavated from a 2 square meter trench and are found in silty and sandy gravel 70 cm thick. The field survey suggests that the cultural Horizon at the Banshan site would bestratigraphically equivalent to the layer A of the Donggutuo horizon formed within theMatuyama Reversed Chron below the Jaramillo Subchron. So the Banshan site may extendback to the late Early Pleistocene as well, that is about 1 million years ago.