EXAMINATION OF BULK SOIL AND CHARCOAL FROM SITES ALONG THE SOUTH FORK AND MIDDLE FORK OF THE AMERICAN RIVER, CALIFORNIA

Bulk soil and detrital charcoal were recovered from the Sand Flat site and from the Oak Tree site in the western Sierra foothills of California. These sites represent paleoflood study sites along the South Fork American and Middle Fork American Rivers. Botanic components of the bulk soil samples and detrital charcoal will be identified, and potentially radiocarbon datable material will be separated.研究人员从加利福尼亚州内华达山脉西麓山麓地带的沙平地遗址（Sand Flat site）与橡树遗址（Oak Tree site）中采集了块状土壤（bulk soil）与碎屑炭（detrital charcoal）样品。上述两处遗址均为沿美国河南支流（South Fork American River）与美国河中支流（Middle Fork American River）分布的古洪水研究遗址（paleoflood study sites）。后续将对该批次块状土壤样品与碎屑炭中的植物组分进行鉴定，并分离出具备放射性碳定年潜力的材料。