Obsidian from central Oregon found at early Holocene site on Lake Huron floor

In an article published in PLOS ONE on May 19, 2021, a team led by John O’Shea, professor of anthropology and curator of Great Lakes archaeology at the Museum, presents a report on two obsidian flakes recovered from a now-submerged Paleoindian archaeological site, about 9,000 years old, beneath Lake Huron. The flakes have been traced to the Wagontire obsidian source in central Oregon, which is more than 4,000 km from Lake Huron—they represent the earliest and most distant reported occurrence of obsidian in eastern North America.
Read the PLOS ONE article here.