Fig. 3: Petrographic characteristics of typical ceramic sherds obtained at the Qixingdun site.
From: Pottery manufacture and exchange at the Qixingdun site in Hunan Province, China

a No. 65—fine-paste pottery; b No. 34—a ceramic sample with crushed granite as a predominant temper; c No. 28—a ceramic sherd with plant stems and leaves as predominant tempers; d No. 64—a ceramic sample from the Xiaojiawuji Culture period, whose predominant tempers were evenly distributed felsic minerals; e No. 69—a sample whose tempers were shreds and strips of fragmented plants; f No. 54—a ceramic sherd whose primary temper was crushed granite containing a high percentage of mafic minerals. More petrographic data regarding this study is provided in Supplementary Fig. 2 to Supplementary Fig. 22.