otseng wrote: ↑Mon Nov 22, 2021 10:26 amI believe this is the Great Unconformity that was briefly discussed
here and
here. It's a whole other topic in itself. If necessary, we can cover this specifically after discussing the strata pattern.
In case you're missing the forest for the trees, the Colorado Plateau was geologically stable for a long time (sedimentary rock under the Great Unconformity), then geologically unstable (sometime between the Great Uncormity and the layers above it), then stable again for a long time (layer deposition and erosion), then unstable for a long time (the uplift of the Plateau and formation of the Grand Canyon), then stable again (the present day). Your argument is that because one of those periods was either too stable (or at least not unstable in the way you imagine it to be), the whole thing is too anomalous to have happened without the Flood. All of the features that you have claimed yourself are necessary for "normal" geology are present in that column, but you've dismissed all of them via special pleading. "How do you explain the absence of these features except where they're present?"
otseng wrote: ↑Mon Nov 22, 2021 10:26 ambut can you share any evidence at all that the stratigraphic pattern of any point in the Grand Canyon is repeated anywhere else in the world?
The pattern I talk about is the massive erosion after all the layers have been deposited and the layers themselves have little record of geologic activity.
That pattern doesn't even exist in the Grand Canyon. There's evidence of lots of geologic activity and I've pointed you to descriptions of it.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amI'm not talking about a pattern of a single stratum that exists throughout the world. As for evidence of the pattern "little geologic activity while layers were formed, all layers formed, major geologic activity", I've posted some in
post 266. I'll have more in my next post.
I would be surprised if there weren't multiple places with broadly similar geology. Why is that anomalous? It might be interesting if all of the canyons you mentioned on different continents showed all of the same erosion plain unconformities as the Grand Canyon and they either date to the same period or (because I know you deny the validity of radiometric dating) show the same kinds of sediment above and below the unconformities. Remember that there are many unconformities in the upper layers of the Grand Canyon. You have neither acknowledged nor refuted that, so I'm not sure if you're including those in your "little record of geologic activity" or are just ignoring them.
I'm also still hazy on your idea of "worldwide." It's obviously absurd if I point out several deserts (Sahara, Mojave, Gobi, Negev) and then claim that the entire world is desert. Does the presence of multiple, discrete deserts fit the same definition of worldwide? Or do you mean something more than that?
Most of the Earth's surface shows geological patterns different from those at the Grand Canyon. The Huron Mountains that I mentioned show a completely different geology, yet were apparently under the same Flood.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amThe important point is that geologists have explained why it's flat
And to confirm, we all agree the sedimentary layers are flat is due to all the layers have been formed under water?
With the caveat that you've neither confirmed nor denied that there are multiple erosion unconformities representing periods where the land was not underwater, then yes.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amFor a palaeochannel that is visible on the surface, it's probably not of significance since it's explainable by recent sediments filling in a dried up river bed. If it's a palaeochannel that is embedded in the strata, it's a little harder to explain. Since layers are formed underwater, the land would have to rise so its above the water, then a river would form, then it would have to be lowered to be underwater again for additional layers to be deposited on top of that.
Exactly. That's why I picked the channel I did. The sedimentary layer representing the deposition of river sediment is buried under 10- to 20-million-year-old volcanic rock and only "partially re-excavated." There are areas that are exposed, so they were able to find it, but parts were still buried under volcanic rock and more sedimentary deposition. So the layers of sediment were laid down, had time to turn to rock, were excavated by a river that laid down its own sediment, then was covered by rock from a volcanic eruption, then was then incised by another river cutting another canyon.
One of the funny things about the gravel sediment is that some of it is "reworked" conglomerate, meaning that it's pieces of older rock eroded from somewhere else, then deposited and given time to harden into conglomerate (essentially sandstone, but it includes larger pieces than sand). Some of this conglomerate then was eroded and deposited
again by the ancient river. Some of that gravel includes fossils, including things like
river-smoothed petrified wood. So we have fossils that were supposed to be because of the Flood having time to be petrified, smoothed out by running water, compacted into rock again, then re-eroded. If this was all within a single year because of the Flood, then the Flood was busy. The search terms are "reworked fossils" and "reworked conglomerate".
otseng wrote: ↑Mon Nov 22, 2021 10:26 amYou're fundamentally wrong and I'm not sure how to prove it to you.
My rebuttal is simply the energy in the water also resulted in work, not just heat.
Your rebuttal is wrong. Energy that does "work" ends up as either potential energy again or heat. I don't know what else to tell you. Find a physicist you trust and ask her.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amWhat flat sea floors are being referred to?
The floors of the series of shallow seas that covered the Colorado Plateau.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amWe see parallel layers in all the sedimentary strata covering vast areas across the world.
Again, you're being vague and I'm not even looking it up this time. I'm going to guess that the "vast" areas are smaller than you think they were. I'll pointedly note that my guess has exactly the same amount of support for it that you've given us for your claims.
Find and link source that says the same thing you are, but with footnotes.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amSo, at all of these places, they must've had flat sea floors. Yet, we do not see flat sea floors covering vast areas across the globe now.
First. the sea level was higher than it is now during much of the
Paleozoic and
Mesozoic eras when much of the sediment was deposited.
Second,
we do, subject to your presentation of a source that both confirms the "vast areas" that you're claiming and is less vague about what that means.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amAnd the erosion in practically all cases results in a flat layer?
No, but neither are the unconformities. "Paleochannels," remember? In the absence of some other source or clarification, you seem to just mean "flat except where it's not."
otseng wrote: ↑Mon Nov 22, 2021 10:26 amI'm contesting erosion should result in a flat layer.
And I'm contesting that anything is as flat as you seem to think it is. I've given you multiple sources describing ancient geological features all across the Colorado Plateau that are anything but what I would call flat.
Give us a source that says the layers and unconformities in the Grand Canyon area are as flat as you think they are and that explains what exactly "flat" means.
otseng wrote: ↑Mon Nov 22, 2021 10:26 amThat's precisely my point. The North American plate stays on top. It is not going under the Pacific plate and being recycled into the earth.
Sediment that was deposited into the ocean to the south and west of the Colorado Plateau was. Before modern irrigation took all the water, the Colorado River emptied into the Baja California, where there's a huge river delta that's visible from space. The reason that it goes there instead of further west is because the Rocky Mountains are in the way. The
Rocky Mountains are younger than the sediment you were asking about, so nothing prevented them from being dumped right into the subduction zone.