MARQUETTE — The Marquette Regional History Center presents: Mystery at McClure: Solved! at 6:30 p.m. May 22.

For decades, a rock layer in Negaunee Township has been on the radar of regional and international geologists. Confirmed now to be the far-flung debris created by the impact of a giant meteor that struck near what is now Sudbury, Ontario 1.85 billion years ago, this rock forms an outcropping at the McClure Basin.

Come hear the story of this incredible geological discovery from the principal investigator on this project, William Cannon, geologist emeritus of the U.S. Geological Survey along with local landowner at the basin, Bryon Ennis. There is a $5 suggested donation.