Cave formations yield seismic clues

From London, at the Environmental Catastrophes and Recovery in the Holocene conference

SHAKEDOWN. The ages of a fallen cave formation’s growth rings and the mineral layers that later covered the formation can help pin down when a major quake occurred. Kagan/Geological Survey of Israel

Analyses of toppled stalagmites and other fallen rock formations in two Israeli caves may provide hints about the rate of ancient earthquakes in the area.