[VadeRetro]

Where's the rubble of this eruption? The debris field? Sure, stuff washed away downstream, but all that stuff thrown to the side should be there, right?

[medved]

According to standard theories by all rights, the "debris field" should be out there where the Colorado empties into the ocean. That's a big problem with the standard theory; it ain't there. In real life, most of the material got vaporized and/or blasted into space. That's why you don't find the world's biggest rock pile out in the ocean where the Colorado should have put it.