It seems from your profile that you assume all the sedimentary layers in the Grand Canyon sequence were laid down in one flood event, correct?
If so, how can you explain the presence of disconformities within the sequence? These are the result of subaerial exposure and erosion and so can't fit in with the flood model.
Mike
It seems from your profile that you assume all the sedimentary layers in the Grand Canyon sequence were laid down in one flood event, correct?
I am not sure. I believe a computer model that could recreate a flood sequence that put water 20,000 feet above sea level might help to iron out some of the possible sequences.
I imagine a worldwide flood event that was higher than the tallest mountains would cause crustal deformations and magma incursions, as well as heavy volcanic activity, because of the immense water pressure.
So to answer your question, I think a team of geophysicists and geologists with the finest University, tools and measurement equipment (the reason this hasn't happened yet), we may have some potential answers.
The Grand Canyon is excuse enough for a serious study to be executed, and I believe as more scientists come out of the ID closet, we may see something organized on the scale that would do it scientific justice.