CHARCOAL AND BOTANIC IDENTIFICATION AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM SITES 5MT226 AND 5MT6341, MONTEZUMA COUNTY, COLORADO

Sites 5MT226 and 5MT6341 are situated in the Kinder Morgan Yellow Jacket Dry Gas Loop Pipeline (YJDG Project) project area located approximately 4.3 miles southwest of the town of Yellow Jacket in Montezuma County, southwest Colorado. Various structures, pithouse, and features excavated at these sites reflect different periods ranging between Archaic/Pre-Pueblo II, Pueblo II and Basketmaker III (Hugh Robinson, personal communication October 23, 2015). One charcoal and two charred botanic samples collected from these contexts were submitted for identification and subsequent AMS radiocarbon age determination to ascertain
periods of occupation.

两处编号为5MT226与5MT6341的遗址，坐落于科罗拉多州西南部蒙特苏马县黄夹克镇西南约4.3英里处的金德摩根（Kinder Morgan）黄夹克干气环管（YJDG Project）工程区域内。对该两处遗址开展考古发掘所揭露的各类建筑遗迹、半地穴式房屋（pithouse）及考古遗存，其年代跨度涵盖古风期/前普韦布洛二期、普韦布洛二期与编篮者三期（Basketmaker III）等不同阶段（Hugh Robinson，2015年10月23日私人通讯）。研究人员从上述发掘层位中采集了1份炭屑样品与2份炭化植物标本，送交进行物种鉴定及后续加速器质谱碳十四测年（AMS radiocarbon age）分析，以确定遗址的人居年代。