EXAMINATION OF BULK SOIL AND DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM THE ALONG CLEAR CREEK (IGO BRIDGE), CALIFORNIA

Two samples from a low terrace/alluvial fan along Clear Creek, a tributary to the Sacramento River in northern California, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were collected from the Igo Bridge site for the Whiskey Town Dam project. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A single charcoal sample was submitted for AMS radiocarbon analysis.从加利福尼亚州北部萨克拉门托河支流克利尔克里克沿岸的低阶地/冲积扇中采集的两件样品，经浮选处理以提取适用于放射性碳分析的有机碎屑。该两件样品采自威士忌镇大坝项目的伊戈桥遗址。研究人员对其中的植物组分及碎屑炭进行了鉴定，并分离出可用于放射性碳定年的潜在材料。最终选取一件炭质样品送至加速器质谱（AMS，Accelerator Mass Spectrometry）进行放射性碳分析。