2006-07-16 11:19:14 · 2 answers · asked by dat dude 1 in Science & Mathematics ➔ Earth Sciences & Geology
Lahars occur when snow/ice are quickly melted during a volcanic eruption causing a massive flow of mud/rocks, ash, trees and other debris. They are a flash flood of debris that destroy everything in their path and cover large areas with stuff. Hot springs occur near faults that create heat by friction and often have magma nearby that is also hot thus raising the temperature of the groundwater. Ash is ejected by volcanism and falls back to earth. It can be deposited by a pyroclastic flow which contains super-heated ash, rocks, and gasses that travel at high velocity....sometimes hundreds of miles an hour! They are quite destructive and very dangerous. Look up Monseurott. It had a awesome pyroclastic flow a few years ago.
2006-07-16 14:47:19 · answer #1 · answered by James L 2 · 0⤊ 0⤋
Do your own homework - or you'll never know the answer!
2006-07-16 12:22:36 · answer #2 · answered by minefinder 7 · 0⤊ 0⤋