Why would this be unreasonable? If I were to propose a scientific theory and a discovery were made that provided evidence that the theory were correct, we would call it good science. Why is it considered anything less to point out that the Bible made a statement that is strengthened by the same discovery?
Water trapped in crystals as hydroxide ions far underground do not exactly constitute a gushing source of floodwater. You'd need divine intervention to get a flood from this stuff -- and if you're already bringing the Hand of God into it, do you really need a geological mechanism to complete the story?
