[El Cid]

Evidence indicates that there is more water under the earth’s mantle than in all the oceans on the surface of the earth...

I am not sure if you are familiar with Dr. Walter Brown's work, but he has a bunch of interesting videos on Youtube regarding his Flood model (Hydroplate Model) of the Great Flood being initiated by 'the Fountains of the Deep' bursting open.

Short Version:
Walter Brown's Hydroplate Model - 10 minutes

Long Version
Walter Brown's Hydroplate Model (Bryan Nickels) - 2hrs

[BrandtMichaels]

Also free online book - or can be purchased for a really good price considering the volumes of research referenced:

http://www.creationscience.com/