Figure 21
From: RETRACTED ARTICLE: The Hopewell airburst event, 1699–1567 years ago (252–383 CE)
Typological age range and Bayesian adjustments of the radiocarbon ages averages for the Hopewell archaeological study sites using the IntCal20 calibration curve in the OxCal 4.4 computer program relative to the timing of 69 near-Earth comets. Kenneth Barnett Tankersley used Microsoft PowerPoint for Mac Version 16.41 (www.microsoft.com) to create this figure.
