Strong shaking at fault stepover has rocks—briefly—defying gravity

Strong shaking at fault stepover has rocks—briefly—defying gravity

When Julian Lozos visited the site of the 2019 Ridgecrest earthquakes two days after the event, he noticed something strange. Pebble- to boulder-sized rocks had clearly been moved by the earthquakes—but there were no signs of dragging or shearing on the desert ground.

How Wide Are Faults? | Seismological Society of America

17 April 2025—At the Seismological Society of America’s Annual Meeting, researchers posed a seemingly simple question: how wide are faults? Using data compiled from single earthquakes across the world, Christie Rowe of the Nevada Seismological Laboratory at the University of Nevada, Reno and Alex Hatem of the U.S. Geological Survey sought a more comprehensive answer, one that considers both surface and deep traces of seismic rupture and creep. B…

When Julian Lozos visited the 2019 Ridgecrest earthquake site two days after the event, he noticed something strange. The gale rocks at the size of a rock had clearly been displaced by the earthquakes, but there was no sign of drag or shearing on the ground [...]