Does lightning sculpt mountains?

A new study sparks debate about how much rubble on a mountainside has been blasted loose by powerful bolts from the sky

By Sid Perkins, 14:47 PM February 3, 2014

There’s no doubt that ice can reshape mountains. Researchers in South Africa now suggest adding another major player: lightning.

They argue that the intense, momentary heat that lightning produces can crack apart mountain surfaces. This can slowly sculpt peaks, leaving rubble behind. Some critics, however, challenge whether lightning is really more than a bit player.

Jasper Knight and Stefan Grab of the University of the Witwatersrand in Johannesburg propose that lightning may be a major reshap...

Source URL: