石峁遗址皇城台东护墙北段出土陶器的成分与岩相分析

Petrographic and Chemical Investigation of Pottery Sherds from the Northern Section of the Eastern Parapet Wall in the Huangchengtai Location at the Shimao Site

本文对石峁遗址皇城台东护墙北段出土陶器进行了成分和岩相分析。结果显示,陶器原料主要为低铝易熔黏土,钙含量较低者可能使用古土壤制成;少量钙含量较高者则使用第三纪红黏土。个别样品黏土中粉砂含量很低,可能与河流冲积土或原料反复淘洗有关。罐和豆多为泥质陶,鬲和盆则多夹砂,羼合料类型包括砂质、沉积岩、铁镁质岩屑和熟料等。本次分析样品出土地点相对集中,但其羼合料和粘土种类均较为多样,显示其可能来源于多个制陶作坊。

The pottery sherds unearthed from the northern section of the Huangchengtai eastern parapet wall at the Shaimao site were subjected to petrographic and chemical analyses.The result shows that almost all samples were made with low-alumina non-refractory clay.Most of them have low calcium content,suggesting an origin from paleosol,while the rest high calcium samples likely employed tertiary red clay.A few samples with low silt content might be associated with using alluvium or repeatedly clay levigation.Guan and dou vessels are mostly temperless while li and pen vessels usually contain large inclusions.Tempers are mainly sand/grit,sedimentary rock fragments,femic rock fragments and grog.Though the pottery sherds investigated in this study were excavated from the same location,they revealed highly varied clay and temper types,and might be manufactured at a range of different workshops.