山东省蒙阴县园艺场旧石器地点调查简报

园艺场旧石器地点发现于2016年6月,次年5月复查。文化层埋藏于蒙阴县蒙阴街道办、东汶河南岸低山冲沟西北面的阶地中,在夹杂角砾的浅黄色砂质黏土层中及地表发现石制品43件,包括石核、石片、石器、断块和残片。石料均采自附近河流阶地底部砾石层。剥片与石器修理均采用硬锤锤击法;石制品为小型和中型;石器包括刮削器和凹缺刮器2类,加工方向颇具特色,多为反向及转向;刮削器是主要类型。地貌与地层对比可知,石制品埋藏于上更新统地层中,推测遗址时代大致为晚更新世晚期。

A preliminary report on reconnaissance of the Yuanyichang Paleolithic localityin Mengyin county of Shandong province

The Yuanyichang Paleolithic locality, buried in the second terrace near the East Wen river at 35°42′54″N， 117°54′26″E, is situated in the subdistrict office of Mengyin, Mengyin county，Shandong Province. The locality was discovered at June, 2016. Joint team(College of History, Hebei University, Shandong Provincial Institute of Relics and Archaeology, Mengyin county cultural relics management office) have had a series of Paleolithic investigation in Xintai, Mengyin, Yiyuan, Linqu, Zaozhuang Shanting district and Pingdu Cunty during June to July, 2016. Five stratigraphic layers were identified at the site, with the total thickness of more than 2.5m. Archaeological remains were mainly collected from Layer 2, light yellow sandy clay with gravels, 0.4-0.45m in thickness. A total of 43 stone artifacts were unearthed.The lithic assemblage includes cores (n=11), flakes (n=7), chunks (n=8), flake fragments (n=10) and retouched tools(n=7). The general features of these artifacts are summarized as follows: 1) Lithic raw materials exploited at the locality were locally available from ancient riverbeds. Quartzite was the predominant raw material（n=36; 83.7%) used for stone artifacts. 2) The principal flaking technique was direct hammer percussion with core preparation. 3) Most stone artifacts were small and medium in size. 4) Most blanks for tool fabrication were flakes. 5) Scrapers (n=6; 85.7%) dominate retouched pieces, followed by notches.The lithic assemblage shows small flake technology in North China. Geomorphological and chronological comparison in the Mengyin county indicates the geochronology of the locality should be close to late Pleistocene.