Scientists Confirm 25-Km Uhaachatik Crater in Quebec, Dating Meteor Impact to 390 Million Years
Updated
Updated · Livescience.com · Jul 16
Scientists Confirm 25-Km Uhaachatik Crater in Quebec, Dating Meteor Impact to 390 Million Years
3 articles · Updated · Livescience.com · Jul 16
Summary
A 25-kilometer ring around Quebec's Lake Marsal has been confirmed as the 390-million-year-old Uhaachatik meteor impact crater after fieldwork and lab analysis.
October 2025 expeditions found shatter cones and impact melt rock—diagnostic evidence of an asteroid or comet strike that earlier zircon samples alone could not prove.
Joël Lapointe first spotted the near-perfect circular pit on Google Maps in 2024 while planning a camping trail, then alerted researchers who investigated the site.
Canada now counts 31 known impact craters out of roughly 200 worldwide, and Osinski said a newly confirmed crater of this 25-km size is unusually rare.