PHYTOLITH, STARCH, MACROFLORAL, AND ORGANIC RESIDUE (FTIR) ANALYSES OF SAMPLES FROM THE HAY-1 SITE (FS-050155229), LOS ANGELES COUNTY, CALIFORNIA

Fill samples from two prehistoric hearths and a rock alignment at the Hay-1 site, FS-050155229, in Los Angeles County, California, were examined for phytoliths, starches, macrofloral remains, and organic residues. The organic residues were analyzed using Fourier Transform Infrared Spectroscopy (FTIR). This site contains both historic and prehistoric components, and the prehistoric component includes a lithic scatter with groundstone, flaked stone tools, boulder milling features, and a quartzite quarrying locale. A radiocarbon date of 790 ± 30 BP was returned for charred material from one of the hearths, reflecting occupation during the Angeles V Phase of the Del Rey Tradition (Sutton 2010). Phytolith, starch, macrofloral, and organic residues analyses will provide subsistence information concerning plant and possible animal resources utilized by the prehistoric occupants of the site.

取自加利福尼亚州洛杉矶县Hay-1遗址（编号FS-050155229）两处史前灶址与一处石构排列的填充样品，均针对植物硅酸体（phytolith）、淀粉粒（starch）、大植物遗存（macrofloral remains）与有机残留物（organic residues）开展了检测分析。有机残留物采用傅里叶变换红外光谱（Fourier Transform Infrared Spectroscopy, FTIR）进行了分析。该遗址涵盖历史时期与史前时期两类遗存，其中史前遗存包含石器散布区（lithic scatter）、磨制石器（groundstone）、打制石器（flaked stone tools）、砾石研磨设施（boulder milling features）以及一处石英岩采石点（quartzite quarrying locale）。对其中一处灶址出土的炭化物质进行放射性碳测年，测得年代为790 ± 30 BP，反映该遗址在德尔雷传统（Del Rey Tradition）的Angeles V期曾有人类定居活动（Sutton 2010）。本次植物硅酸体、淀粉粒、大植物遗存与有机残留物分析，将为揭示该遗址史前定居者所利用的植物乃至潜在动物资源，提供生计模式相关信息。