Ohio Hopewell is an archaeological concept that is known worldwide but that suffers from “a disarray of radiocarbon results” (Lynott 2015:60). Here, we establish a comprehensive dataset of 425 14C dates from Ohio Hopewell sites and apply formal chronometric hygiene criteria to all dates. We then iteratively assess the temporal placement and span of the six most important Ohio Hopewell sites—the Hopewell Mound Group, Liberty, Mound City, Seip, Tremper, and Turner. A staged relaxation of hygiene criteria for our best three categories (Classes 1–3) permits alternate but generally consistent conclusions. As the first large-scale analyses of Ohio Hopewell temporality since the publication of IntCal20 (Reimer et al. 2020), the available data show a ritual complex that begins 90 or more years later than generally has been recognized circa 2010 14C BP, or as Bayesian modeled, AD 90–120. Our analysis reveals site histories of differing spans, more late dates than early dates, and with most Hopewell activity ending across these sites circa 1640 14C BP, or as Bayesian modeled, AD 395–430. An increased consideration of contingency in contemporary temporal reckoning increases the utility of the historical narratives that we as archaeologists can construct.

俄亥俄霍普韦尔是一个世界闻名的考古学概念，但它遭受“放射性碳结果的混乱”（Lynott 2015：60）。在这里，我们建立了一个综合数据集 425 14C 来自 Ohio Hopewell 网站的日期并对所有日期应用正式的计时卫生标准。然后，我们反复评估六个最重要的俄亥俄霍普韦尔遗址的时间位置和跨度——霍普韦尔丘群、Liberty、Mound City、Seip、Tremper 和 Turner。我们最好的三个类别（1-3 类）的卫生标准分阶段放宽，可以得出不同但总体一致的结论。作为自 IntCal20（Reimer 等人，2020 年）出版以来对俄亥俄霍普韦尔时间性的首次大规模分析，现有数据显示一个仪式复合体开始时间比普遍认为的大约 2010 年 14 C BP 晚 90 年或更长时间，或者贝叶斯建模，公元 90–120 年. 我们的分析揭示了不同跨度的站点历史，更晚的日期比更早的日期，并且大多数 Hopewell 活动结束于这些站点大约 1640 14 C BP，或贝叶斯建模，公元 395-430 年。在当代时间计算中更多地考虑偶然性增加了我们作为考古学家可以构建的历史叙述的效用。