https://www.live-feeds.com/feed/scientists-investigate-strange-rumbling-beneath-utahContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/scientists-investigate-strange-rumbling-beneath-utahhttps://www.live-feeds.com/feed/scientists-investigate-strange-rumbling-beneath-utah#u2129Wed, 17 Jun 2026 03:26:14 +0000A 1979 earthquake beneath northern Utah, initially dismissed as unlikely, has been confirmed as a real event deep in Earth’s mantle. Researchers now identify it as part of a rare class of 'continental mantle earthquakes' occurring nearly 90 kilometers underground. The discovery challenges long-held assumptions about seismic activity and could reshape hazard predictions. Ongoing analysis continues to puzzle scientists about the region’s deep seismic behavior.What's confirmed:A mysterious earthquake detected beneath northern Utah in 1979 occurred nearly 90 kilometers underground, far d