POLLEN ANALYSIS AT THE MCGINNES SITE (48SU1499), SUBLETTE COUNTY, WYOMING

The McGinnes Site (48SU1499) is a stratified, multicomponent, kill/butchering site associated with local spring activity and located west of LaBarge, Wyoming. Fourteen stratigraphic samples from two columns represent interbedded cultural and acultural sediments. Eight additional samples were collected from the cultural surfaces and associated features. Two modern surface samples also were examined to provide a baseline for interpreting paleoenvironmental change and economic activity at the site. Artifact and geologic evidence and a basal radiocarbon age of 1980 + 70 BP suggest that the time period represented by the combined stratigraphic pollen samples is likely about 2000 years, and that occupation included the time of transition from the Late Archaic to the Late Prehistoric. Pollen analysis of these twenty-four samples provides information concerning available and potentially utilized plant resources, as well as insight into vegetal changes in the vicinity of the site.McGinnes遗址（48SU1499）是一处层序清晰、多组分的狩猎/屠宰遗址，与当地泉眼活动相关联，坐落于怀俄明州拉巴奇（LaBarge）以西。研究人员从两根地层采样柱中共采集14件地层样品，这些样品对应交互沉积的文化沉积物与非文化沉积物。另有8件样品采自文化堆积面及其相关考古遗迹。此外还采集了2件现代地表表层样品，作为解读该遗址古环境变化与人类经济活动的基准参照。通过人工制品、地质证据以及底部1980±70 BP的放射性碳定年结果可知，这套综合地层孢粉样品所覆盖的时间跨度约为2000年，遗址的人类活动时段涵盖了从晚古风期（Late Archaic）向晚史前时期的过渡阶段。对这24件样品的孢粉分析，可揭示遗址周边可获取且潜在可被利用的植物资源信息，同时也能为该区域的植被变化提供科学洞见。