EXAMINATION OF BULK SOIL AND CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM THE ROVNER SIMI PROJECT, SIMI VALLEY, CALIFORNIA

A selection of bulk soil samples collected from trenches and augers excavated as part of the Rovner Simi Project, Simi Valley, southern California, were floated to recover organic fragments suitable for radiocarbon age determination. In addition, two charcoal samples also were submitted for identification and microscopic charcoal was extracted from five sediment samples. Botanic components and charcoal fragments were identified, and optimal radiocarbon datable material, including microcharcoal, was submitted for AMS radiocarbon dating.

本次研究所选取的散装土壤样品采自美国南加州西米谷罗夫纳西米项目开挖的探沟与土钻，经浮选法处理以提取适用于放射性碳定年的有机残体。此外，另有2份木炭样品送检鉴定，并从5份沉积物样品中提取了显微炭屑。研究人员对植物组分与木炭残体开展了鉴定，并将包括显微炭屑在内的最适用于放射性碳定年的材料提交至AMS（Accelerator Mass Spectrometry）放射性碳定年检测。