河北泥河湾盆地油房北旧石器地点的发现与研究

油房北旧石器地点是河北省泥河湾盆地东缘的一处考古新发现，本文对该地点的下部文化层相关情况做了重点介绍。下部文化层的厚度约2.5 m，在3 m²的试掘范围内出土了石制品、动物化石及自然砾石等标本计600余件。石器工业面貌整体上承袭了我国华北地区的小石片石器文化传统。微体古生物化石（介形虫等）研究表明，该文化层自下而上经历了河流阶地到湿地环境的转变。光释光方法测得其年代大约在8.6~10.8万年，相当于深海氧同位素5阶段（MIS5），处于末次间冰期。油房北地点的考古发现增添了末次间冰期古人类活动的新证据，为研究当时古人类的生计方式及人地关系提供了重要实物资料。

Discovery and investigation of the Paleolithic Locality of Youfangbei,Nihewan Basin,Hebei Province

The Youfangbei Locality(40°13'N, 114°41'E; 930 m above sea level), situated in the Nihewan Basin of Yangyuan County, Hebei Province, North China, is situated ca. 150 meters from the Youfang Site, separated by a natural gully. Its main cultural layer with a thickness of 2.5 m is located at the base of the northern terrace of the gully, covered by loess-like deposits containing a blackish brown soil. The whole stratigraphic sequence is ca. 12 m thick and situated on the bedrock of Jurassic pinkish gravels. A main trench area of 3 m2 was exposed and about 600 samples collected, including stone artefacts, animal fossils and pebbles.