The amount of water "estimated" is grossly underestimated. The continents are saturated with water, not to mention deep subterranean water. During the deepest exploration drilling to date, to much of their surprise scientists found water 6 miles deep. The earths mantle could very well be full of super-heated/super-critical water, which brings up another interesting fact....The formation of magma requires water as a flux, further proof of abyssal water.
It's not water in a form available for flooding.
Absolutely the Himalayas and other mountains are formed via tremendous pressure (vertical) and temperature. Volcanism can raise mountains quickly and have all the ingredients of temperature, pressure, explosive dynamics, etc.
Vulcanism can raise mountains relatively quickly. The vast majority of mountains, including the Himalayas, are not volcanic and bear many marks of having taken millions of years to form.
There's actually a hole that scientists dug up in Russia that's 7.5 miles deep. They found water deposits as deep as 5 miles. They say it 's an evidence of water from the great flood.
Nobody found liquid, solid, or gaseous water deposits. They found H2O bound in various minerals. The only "they" that claims it's evidence of the fludde are creationists, of course. And again of course nobody's hypothesized any mechanism for getting it onto the surface as liquid water, or returning it from the surface.
Water doesn't sort things in the manner we observe. If a fludde sorted like water it would sort nearly indistinguishable* things together. Such as trilobites and crabs. Such as plesiosaurs and dolphins. Such as many other examples.
But we don't see that. Therefore either it didn't happen or it's a miracle performed by a Being dedicated to lie to us in every aspect of His creation.
*In their shape, size, and mass; also in their environment and escape capabilities, but those only matter to the other risible "sorting theories" of YECs.
Not opinion, Faith. Fact. We understand liquid water and its behavior and what happens to things in it very well, from normal conditions to the most extreme conditions under which liquid water can exist. It cannot do what you require of it.
It remains true that water sorts things and makes layers of sediments.
Water does not sort things in the manner we see in the fossil record. It sorts similar things together. But we do not see similar things together in the fossil record.
The point about radioactive isotopes is that there is an obvious pattern in how they appear in rocks. Oversimplifying a bit, the amount of radioactive isotopes decreases with depth and the amount of their daughter isotopes increases with depth. No matter how you interpret that pattern, the pattern objectively exists and demands explanation.
"I don't know about that" is not an explanation; it's an admission of the failure of your "theory".
quote: Unlike Chengjiang, where only four species of trilobites are known, 13 genera of trilobites have been recorded in the Burgess Shale, though trilobites make up a small percentage of the total fauna.