IDENTIFICATION AND AMS RADIOCARBON DATING OF CHARCOAL FROM THE BIRTHDAY SITE, 41BS1914, TEXAS

Three charcoal samples from the Birthday Site (41BS1914) in west Texas were submitted for identification and AMS radiocarbon dating. This site is a buried prehistoric campsite with numerous stone-lined hearths eroding from arroyo walls. Charcoal was submitted from the fill of a stone-lined hearth, from a cultural lens adjacent to a buried hearth, and from a cultural lens noted in arroyo walls. These features are believed to represent Early to Middle Archaic occupations. A total of three AMS radiocarbon dates were obtained.本次研究提交了来自美国西得克萨斯州Birthday遗址（41BS1914）的三份炭样，用于物种鉴定与加速器质谱放射性碳定年（AMS radiocarbon dating）。该遗址为一处埋藏型史前营地遗址，发育有大量从冲沟壁侵蚀暴露的石砌火塘。本次提交的炭样分别取自一处石砌火塘的填积物、一处毗邻埋藏火塘的透镜状文化层，以及冲沟壁中可见的透镜状文化层。上述考古遗存被认为属于早-中阿卡迪亚时期的人类活动遗留，最终共获得3组加速器质谱放射性碳定年结果。