Elemental compositions of Dhaskalio obsidian artifacts as determined by pXRF. Values expressed in ppm [parts per million]; RV = recommended values; * = 60 seconds.

Elemental compositions of Dhaskalio obsidian artifacts as determined by pXRF. Values expressed in ppm [parts per million]; RV = recommended values; * = 60 seconds.经便携式X射线荧光光谱法（pXRF）测定的达斯卡利奥黑曜石人工制品的元素组成。所有数值以百万分率（ppm，parts per million）表示；RV为推荐值（recommended values）；*代表测试时长为60秒。