POLLEN, PHYTOLITH, AND MACROFLORAL ANALYSES AND AMS RADIOCARBON DATING OF SAMPLES FROM SITE 41DL436, DALLAS COUNTY, TEXAS

Site 41DL436 lies in a floodplain of Fish Creek in Dallas County, Texas. Pollen and phytolith samples were collected stratigraphically from a column at this site as a feasibility study to examine preservation of these proxy data records. Four samples were examined for macrofloral remains to recover charred material for AMS radiocarbon dating. Charcoal from features in other areas of the site yielded radiocarbon dates from 110 BP to 1090 BP. Four AMS radiocarbon dates were obtained from various levels of the column.

41DL436号遗址位于美国得克萨斯州达拉斯县费什溪（Fish Creek）的泛滥平原之上。本研究以该遗址的地层剖面为研究对象，按地层序列采集花粉（pollen）与植物植硅体（phytolith）样品，开展旨在检验这类代用资料记录保存状况的可行性研究。同时选取4份样品开展大植物遗存分析，以提取炭化物质用于加速器质谱（AMS）放射性碳定年。该遗址其他区域遗迹出土的木炭样品经放射性碳测年，得到的年代跨度为110 BP至1090 BP。本次地层剖面的不同层位中共获得4份加速器质谱放射性碳测年结果。