The universe appears "old", but it is still less than 10,000 years old

[Thor]

Well it’s important to note that not all creationists accept this model, many accept a slant-wise vertical tectonic model. However, the mechanism appears to work fairly well from a scientific perspective. A negatively buoyant ocean lithosphere would create a runaway subduction mechanism into the Earth’s mantle.

So I repeat... Your evidence for this assertion is....?

And why would a global flood cause runaway continental drift? Tectonic plates are many miles below the Earth's surface! You're going to say that a flood caused South America and Africa to become separated by thousands of miles in a few months?

You have that backwards; the plate tectonic action caused the flood by pushing oceanic waters onto the continents and then caused the flood to recede due to continental upheaval back to the oceans towards the end of the flood year.

Sounds pretty ad hoc to me. Evidence?