The valcano idea is tossed in because these guys want "naturalistic" explanations for things they can otherwise not explain. It's never enough for them to say "I don't know" or to take the scripture literally. People want to force supernatural into a natural explanation. When they can't they tend to avoid the subject rather than admit their ignorance. That is pride.
I like the jacketed sulfur pellets from the area of Sodom and Gamorah. I've never seen a natural explanation for them, yet there they are. Volcanos don't produce them nor is there one near by to explain them if volcanoes did produce them. And further, there is no explanation for the specific places they fell to the exclusion of others - that is unless one takes scripture at it's word and God at His.
I've never heard of 'jacketed sulphur pellets' around the alleged site of Sodom & Gomorrah. Very interesting. I'd like to know more.
Are these anything like the jacketed depleted uranium shells the US Airforce uses to pierce the armor on tanks?
I suppose God could have used depleted uranium if He wanted to--but God knows jacketed sulphur pellets were probably enough to destroy the rock huts of that rabble in Sodom and Gomorrah.