ANALYSIS OF ORGANIC RESIDUES (FTIR), MACROFLORAL, CHARCOAL, AND AMS RADIOCARBON DATING FOR SAMPLES FROM TEN SITES ON FORT BLISS, NEW MEXICO

Samples were examined from ten sites (41EP0998, 41EP1023, 41EP1251,41EP2471, 41EP2705, 41EP5665, 41EP5823, 41EP5826, 41EP5831, 41EP5860) located on Fort Bliss in El Paso County, Texas. Twenty-four samples were submitted for charcoal identification. Charcoal from 19 of these samples were chosen for AMS radiocarbon dating. Sediment from five areas of carbon staining at four of the sites was floated to recover charred macrofloral remains. Four pieces of fire-cracked rock and one ceramic sherd from four of the sites were examined for organic residues using Fourier Transform Infrared Spectroscopy (FTIR). Which will examine these artifacts for evidence of proteins, lipids, and/or carbohydrates.本次研究对位于美国得克萨斯州埃尔帕索县布利斯堡的10处考古遗址（编号分别为41EP0998、41EP1023、41EP1251、41EP2471、41EP2705、41EP5665、41EP5823、41EP5826、41EP5831、41EP5860）的样品开展了检测分析。共提交24份样品用于木炭种类鉴定，其中19份样品所提取的木炭被选取用于加速器质谱（AMS）放射性碳定年分析。从其中4处遗址的5处碳染色区域采集的沉积物经浮选处理，以回收炭化大植物遗存。研究人员采用傅里叶变换红外光谱（Fourier Transform Infrared Spectroscopy, FTIR）对另外4处遗址采集的4块火烧破裂岩与1块陶瓷碎片开展有机残留物检测，该技术可对上述人工制品中的蛋白质、脂质以及/或碳水化合物类残留证据进行分析。