Pleistocene Glaciation of Ohio, USA

Neutron activation analysis of 12,900-year-old stone artifacts confirms 450–510+ km Clovis tool-stone acquisition at Paleo Crossing (33ME274), northeast Ohio, U.S.A.

“…(ca. 15,000 calBP) (Gill et al, 2012;Glover et al, 2011;Herdendorf, 2013;Hill, 2006;Metcalfe et al, 2013;Szabo and Chanda, 2004;Yu, 2000). After which these foragers could have procured stone from outcrops located closer to Paleo Crossing either during their journey to the site or through exchange or logistical forays after establishing a camp at Paleo Crossing.…”

Calibrating the Wisconsin in the eastern Great Lakes of North America using optically stimulated luminescence (OSL) dating of the Quaternary sediments at Sand Hill Park, north shore of Lake Erie, Ontario

“…The retreat of the Erie Lobe from its last glacial maximum (Nissouri phase) in southern Ohio began around 27 ka, as shown by dates of 27.16 ± 0.32 and 27.3 ± 0.5 ka from wood in lake silts behind the Cuba moraine (Lowell et al, 1999;Dyke et al, 2015;Nash, 2020). It took about 12 ka to retreat to near the eastern end of Lake Erie, as shown by the dates of 14.8 ± 0.2 and 14.9 ± 0.22 ka from the Winter Gulf peat in lake deposits above the Lake Escarpment moraine (Thatcher Till) at Gowanda, south of Buffalo (Calkin, 1982;Szabo et al, 2011;Fig. 1A and B).…”