POLLEN AND PHYTOLITH ANALYSIS OF STRATIGRAPHIC COLUMN SAMPLES FROM THE WORKHORSE SITE, 48CA2892, WYOMING

A total of 22 soil samples were submitted for pollen and phytolith analysis from the
Workhorse Site, 48CA2892, located in Campbell County, northeast Wyoming. Radiocarbon
dates from 4180 to 4890 BP indicate Middle Plains Archaic occupation of the site. During
excavation of the site, a possible depression and bands of stained soil were observed. The
goal of the pollen and phytolith analysis is to better understand the origins of these stained soils,
and what type of natural or anthropological event may have caused their formation. Since these
samples are stratigraphic, local and region paleoenvironmental information will also be
obtained.

本研究共采集自怀俄明州（Wyoming）东北部坎贝尔县（Campbell County）的Workhorse遗址（Workhorse Site，编号48CA2892）的22份土壤样本，将用于花粉（pollen）与植硅体（phytolith）分析。该遗址的放射性碳测年（Radiocarbon dates）结果为4180至4890 BP，表明此处曾有中平原古风期（Middle Plains Archaic）的人类定居活动。在遗址发掘过程中，工作人员观测到一处疑似凹陷区域与多条染色土壤带。本次花粉与植硅体分析的目标，在于厘清上述染色土壤的成因，并探究可能导致其形成的自然或人类学相关事件类型。鉴于这批样本均为地层序列样本，研究还将同步获取当地及区域的古环境信息。