POLLEN AND MACROFLORAL ANALYSIS AT SITE 42UN2889, UTAH

Samples from pit features at site 42UN2889 in northeast Utah were sampled for pollen and
macrofloral remains. In addition, pollen samples were recovered from the modern ground surface
just off site, from a layer of sand that includes the upper meter of sediments exposed in the pipeline
trench wall, and from a clayey/caliche stratum underneath the sand. The paucity of artifacts found
at the site, combined with the abundance of groundstone and small features, suggests that
42UN2889 is a limited activity site used for plant processing. Radiocarbon dates place occupation
of the site during the early part of the Fremont period, probably between A.D. 250 and 700. Pollen
and macrofloral analyses will be used to determine types of plants processed at this site.

对美国犹他州东北部42UN2889遗址的坑穴遗迹采集了孢粉与大植物遗存样本。此外，还从遗址周边现代地表、管道沟槽壁暴露的上部1米砂质沉积层，以及该砂层之下的黏土层/钙结岩层中获取了孢粉样本。该遗址出土遗物稀少，但研磨石器与小型遗迹数量丰富，这表明42UN2889是一处用于植物加工的有限功能遗址。放射性碳定年结果显示，该遗址的使用年代处于弗里蒙特文化早期，大致为公元250年至700年之间。本研究将通过孢粉与大植物遗存分析，明确该遗址加工的植物种类。