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Gold/Mining/Energy : Twin Mining (formerly Twin-Gold) -- Ignore unavailable to you. Want to Upgrade?

To: VAUGHN who wrote (380)	3/26/2002 7:38:19 AM
From: Bob Fairchild	Read Replies (1) \| Respond to of 613

I'm certainly no geologist but isn't limestone usually deposited in layers ? As long as the layers are consistently made up of limestone, I would imagine that it would be fairly stable and the layers would have a strengthening effect much like a piece of plywood. I understand that when you get alternate layers of limestone interspersed with a harder material and water flowing over it that the softer limestone erodes first and undermines the harder layers which break down due to absence of underlying support. Isn't this how Niagara Falls was formed ???? Bob