This paper presents a series of new radiocarbon dates on the Lynch site (25BD1), an Initial Coalescent site in northeastern Nebraska, and takes a Bayesian approach to examining them in three contexts. First, we consider what they tell us about the chronology of occupation at the site itself. Second, we combine them with dates on other sites in the Ponca Creek drainage to consider the chronological pattern of horticultural settlement there. Finally, we compare the Ponca Creek dates to the radiocarbon chronologies for the Central Plains tradition and Central Plains Oneota. Our analysis indicates that people settled Lynch from east to west and abandoned it from west to east between roughly AD 1250 and 1350. At its maximum extent, farmers appear to have occupied the full 80 ha extent of the site. As farmers settled Lynch, closely related people settled upstream on Ponca Creek. People abandoned these communities shortly before they abandoned Lynch. Farmers settled on Ponca Creek as a whole shortly after the major expansion of Central Plains tradition (CPt) ways of life and the appearance of Central Plains Oneota towns and abandoned that area a generation or two before CPt communities disappeared. Central Plains Oneota communities persisted into the mid 1400s. The Lynch/Ponca Creek pattern is consistent with the movement of Central Plains populations into the southern portion of the Middle Missouri in the early 1300s.

本文介绍了内布拉斯加州东北部的初始聚结点 Lynch 站点 (25BD1) 的一系列新放射性碳日期，并采用贝叶斯方法在三种情况下对其进行检查。首先，我们考虑他们告诉我们的关于该地点本身的占领年表。其次，我们将它们与 Ponca Creek 排水系统中其他地点的日期相结合，以考虑那里园艺定居的年代模式。最后，我们将 Ponca Creek 日期与中原传统和中原 Oneota 的放射性碳年表进行比较。我们的分析表明，大约在公元 1250 年至 1350 年之间，人们从东到西定居林奇并从西到东放弃了它。在最大范围内，农民似乎已经占据了整个 80 公顷的土地。当农民定居林奇时，关系密切的人在庞卡溪上游定居。人们在放弃林奇之前不久就放弃了这些社区。在中原传统 (CPt) 生活方式的大规模扩张和中原 Oneota 城镇的出现后不久，农民们就在整个庞卡溪定居下来，并在 CPt 社区消失前一两代人放弃了该地区。中原 Oneota 社区一直持续到 1400 年代中期。Lynch/Ponca Creek 模式与 1300 年代初中原人口迁移到密苏里州中部南部的情况一致。在中原传统 (CPt) 生活方式的大规模扩张和中原 Oneota 城镇的出现后不久，农民们就在整个庞卡溪定居下来，并在 CPt 社区消失前一两代人放弃了该地区。中原 Oneota 社区一直持续到 1400 年代中期。Lynch/Ponca Creek 模式与 1300 年代初期中原人口向密苏里州中部南部的迁移一致。在中原传统 (CPt) 生活方式的大规模扩张和中原 Oneota 城镇的出现后不久，农民们就在整个庞卡溪定居下来，并在 CPt 社区消失前一两代人放弃了该地区。中原 Oneota 社区一直持续到 1400 年代中期。Lynch/Ponca Creek 模式与 1300 年代初中原人口迁移到密苏里州中部南部的情况一致。