Water above Mountains?
Is there enough water to cover all the earth’s pre-flood mountains in a global flood? Most people do not realize that the volume of water on earth is ten times greater than the volume of all land above sea level.
Why do you think this might be?
Most of the earth’s mountains consist of tipped and buckled sedimentary layers. Because these sediments were initially laid down through water as nearly horizontal layers, those mountains must have been pushed up after the sediments were deposited.
Correct.
If the effects of compressing the continents and buckling up mountains were reversed, the oceans would again flood the entire earth.
No, it wouldn't.
The world's mountain ranges are of varying ages. They tend to occur along plate contacts, and often undergo several compressive phases. For example, the Grenville Belt in North America closely parallels the Appalachians because the east margin of North America has undergone several compressive events over the last 1100MY or so, separated by periods of submarine crustal stretching such as the one forming the North Atlantic right now. The latest manifestation of that was the eruption that shut down so much air traffic this Spring. You have to bear in mind also that while compressional stress dominates in areas of mountain building, there are always equivalent areas of tensional stress. For continents to move, seafloor must spread- and you seem happy to accept that continents do move, from your description of mountain formation.
Therefore, the earth has enough water to cover the smaller mountains that existed before the flood. (If the solid earth were perfectly smooth, the water depth would be about 9,000 feet everywhere.)
The flood is dated by Biblical sources to a few thousand years ago. We know that in the Holocene there were indeed many huge floods in the northern hemisphere, following the end of the Younger Dryas Glaciation. That humans observed some of these and passed the stories down is by no means unreasonable. But there is no evidence from Geology to suggest mountain ranges were significantly lower then than they are now. (Isostatic uplift of heavily glaciated northern countries is on the order of 100metres. In the Himalaya, a great deal less than that.)
The Earth is not solid. Neither is it smooth. Three billion years ago, it was as cratered as the Moon. Plate Tectonics has largely (by no means totally) erased that cratering. We have clear evidence (Palaeomagnetism, Radionucleide dating, field outcrops, fossils and so on) to establish most clearly that mountain building, continental collision, lithosphere subduction and seafloor spreading have been continuous processes since at least the late Hadean - and given the driving mechanism of mantle convection is driven by heat and the mantle was probably hotter back when, it's more probable than not that tectonics were actually more energetic in the early Hadean, rather than less.
There has never been a time when the Earth was a perfect sphere, though one or two of the Global Ice Ages may have come close.
The Seemingly Impossible Events of a Worldwide Flood Are Credible, If Examined Closely.
Only if you choose to ignore all the evidence. I'm sorry, but this is a quite incredible claim.