Figure 18
From: RETRACTED ARTICLE: The Hopewell airburst event, 1699–1567 years ago (252–383 CE)
Positive Ir and Pt anomalies from the burned carbon-rich strata on Hopewell archaeological sites in the Ohio River valley: (E) Beech Tree village, Ohio; (F) Milford earthworks, Ohio; (G) Indian Fort Mountain earthworks, Kentucky; (H) Foster’s Crossing earthwork, Ohio. Kenneth Barnett Tankersley used Microsoft PowerPoint for Mac Version 16.41 (www.microsoft.com) to create this figure.
