灵井许昌人遗址第5层细石核工艺

本文研究的细石核出自灵井"许昌人"遗址第5层,该层为桔黄色粉细砂,2008-2013年发掘,出土细石核82件,其他还有与之相关的材料。该层碳十四年龄为13402±406BP。细石核素材一般为燧石质的石片、小砾石等。根据其毛坯形状、细石叶剥离进度等的差异,形成了角锥形、柱形、圆锥形等各种形状。在剥离石叶过程中,曾运用过台面修理、工作面上端(细石叶头部)修正、台面更新、台面转移等调整手法。灵井石器工业的细石叶工艺是一种以角锥形(型)细石核为主的技术。通过对比,灵井与华北各地的同类细石核大小尺寸接近,与本省临近的大岗、李家沟等细石器遗址应属相同或相近技术传统的细石叶工艺。

Observations of Microblade Core Technologies from Level 5 of the Xuchang Man Site,Lingjing

The Lingjing Xuchang Man site, first discovered in 1965, is located in the western part of Lingjing County, Xuchang Town, Henan Province, with an overall coverage of more than 30 km2. The first season of excavation was carried out in 2005. Cultural deposits reach up to 9 meters thick and include 11 levels. microliths, early ceramics, a bird figurine, fossil animals, flaked stone artifacts, ostrich eggshells, drilled ostrich eggshell ornaments and, ochre were found in Level 5, and a human fossil cranium, dating roughly 100 kaBP, was unearthed from Level 11. Eighty-two microblade cores examined in this paper were unearthed from Level 5 during excavations from 2008 to 2013. Level 5 is an orange and fine sand layer, dating back 13500±406 BP. Raw materials for microblade cores were usually flint cobbles, flakes or pebbles. According to the shapes of blanks, a variety of microblade cores were recognized, including pyramidal cores, cylindrical cores, conical cores etc. During microblade production, a couple of rejuvenation techniques were practiced, such as retouching platforms or the top of work surfaces, renewing platforms or shifting position of platforms. By comparison, the size of the Lingjing cores is very similar with other sites in north China, and the microblade technologies of Lingjing, Dagang and Lijiagou sites (all within Henan Province) belong to the same stone industrial tradition.