IDENTIFICATION OF BOTANIC REMAINS IN DRILL CORE SAMPLES FROM PORTLAND, OREGON

Six samples of botanic remains recovered from drill core samples collected in 1983 were submitted for identification. These remains most likely represent plants growing on the land surface in the Portland, Oregon, area prior to being covered by Missoula flood deposits around 15,000 years ago. The botanic samples were submitted for identification before possible radiocarbon dating.1983年采集的钻探岩芯样本中提取的6份植物遗存样本已送交鉴定。这些遗存大概率对应约15000年前被米苏拉洪水沉积物覆盖前，生长于俄勒冈州波特兰地区陆地表面的植物。该植物样本已在开展放射性碳定年之前送交鉴定。