EXAMINATION OF BULK SOIL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM EAST CANYON TRENCH, UTAH

A total of eight bulk soil samples from the East Canyon Trench in Summit County, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from tenches along the East Canyon fault, a northeast-trending range-front fault generally bounding the northern side of the intermontane valley between East Canyon and Croyden in the Wasatch Range (Black and Hecker 1999). Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. One sample of charred organic material was processed for AMS radiocarbon analysis.共计采集美国犹他州萨米特县东峡谷探槽的8件散装土壤样品，通过浮选法回收适用于放射性碳分析的有机碎屑。上述样品采自东峡谷断层沿线的探槽；该断层为北东走向的山脉前缘断层，大致构成瓦萨奇山脉中东峡谷与克罗伊登之间山间谷地的北界（Black与Hecker，1999）。研究人员对样品中的植物组分与碎屑炭进行了鉴定，并分离出具备放射性碳定年潜力的材料。选取1件炭化有机材料样品，开展加速器质谱（AMS）放射性碳分析。