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Author Topic:   Motley Flood Thread (formerly Historical Science Mystification of Public)
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 496 of 877 (834652)
06-09-2018 12:44 PM
Reply to: Message 420 by Faith
06-06-2018 6:24 PM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
Faith writes:
As I have pointed out the Smith diagram is misleading. And the Grand Canyon also shows very strong evidence that there were tectonic events before all the strata were laid down.
Very very few in comparison with what there should be if the Time Scale were correct.
As has been explained many times, the Colorado Plateau region is unusual in how quiet tectonically it has been over an extended period of time. Yet during the period when the it was tectonically quiet other parts of the world were tectonically active, and some of these tectonically active regions are immediately adjacent to the Colorado Plateau. As the USGS webpage on the Colorado Plateau says:
quote:
One of the most geologically intriguing features of the Colorado Plateau is its remarkable stability. Relatively little rock deformation (ex. faulting and folding) has affected this high, thick crustal block within the last 600 million years or so. In contrast, the plateau is surrounded by provinces that have suffered severe deformation. Mountain building thrust up the Rocky Mountains to the north and east and tremendous, earth-stretching tension created the Basin and Range Province to the west and south.
Did you follow that? Regions adjacent to the Colorado Plateau were very tectonically active at the same time that the Colorado Plateau was relatively tectonically quiet. This directly contradicts your claim, or in layman's terms, you're wrong yet again.
And they are all very ambiguous and can all be interpreted more reasonably my way.
And yet every time you try to explain your way all kinds of problems emerge. That's why most of the time you just declaratively say something like, "The Flood explains things much better," avoiding specifics, entire posts and entire people. Other times you just endlessly repeat boneheaded claims, like that the geologic timescale has ended. A lot of the time you seem apathetic about getting anything right, as if you just need a pastime and saying provocatively wrong things gets you the responses you need to keep busy.
To add to what PaulK says about the Smith diagram, while it was a revolution in understanding at the time, there is much Smith could not know and that is therefore absent from his (by today's standards) extremely primitive and undetailed diagram. This is not to take anything away from Smith, but it isn't like we haven't learned anything in the intervening 200 years.
--Percy

This message is a reply to:
 Message 420 by Faith, posted 06-06-2018 6:24 PM Faith has not replied

  
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 497 of 877 (834654)
06-09-2018 1:28 PM
Reply to: Message 427 by Faith
06-07-2018 12:51 AM


Re: Geo Column, Depositional Environments, etc
Faith writes:
In any case the flatness shown in that Painted Desert hill is so much flatter than any salt sea or field or beach that you keep trying to palm off as the basis for it.
Here's a high resolution photo from the Painted Desert. Blow it up and scroll around and you'll see that those strata aren't as flat as you thought - there's even interbedding.
Why are you holding me responsible for a picture I didn't discuss?
You're making false accusations again.
As you even quote, I referred only to the HILL in the picture I posted.
Yeah, so? Why does it matter what hills we look at in the Painted Desert? I needed a high res image so you could see the contacts up close, so that's what I posted.
However, the picture you posted shows lines that are so distorted by the wrinkled dried surface I would guess that they were originally quite straight and flat.
Yeah, but you can't see, and when you can't see something you just make things up. Anyone who can see who blows up the image and pans around will easily find examples of tilts, crossbedding, gradations, and interbedding. Here's the image again:
I again encourage everyone to include any image under discussion in their message. It's very easy to do, and it has very little overhead.
--Percy
Edited by Percy, : Typo.

This message is a reply to:
 Message 427 by Faith, posted 06-07-2018 12:51 AM Faith has not replied

  
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 498 of 877 (834655)
06-09-2018 1:39 PM
Reply to: Message 433 by Faith
06-07-2018 9:14 AM


Re: An easy question for Faith:
Faith writes:
No problem. The dating is wrong. All those sites grew up after the Flood.
NO material was deposited UNDER anything.
We already know your Biblically based beliefs. The discussion is your opportunity to present evidence supporting what you believe. It's understandable that you to avoid doing that, since every time you attempt it you make one misstatement of fact or logic after another, but it does raise the question of why you are here. Bored, I guess?
--Percy

This message is a reply to:
 Message 433 by Faith, posted 06-07-2018 9:14 AM Faith has not replied

  
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 499 of 877 (834656)
06-09-2018 4:58 PM
Reply to: Message 434 by Faith
06-07-2018 10:31 AM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
Faith writes:
Faith writes:
...that the strata were all there before being disturbed in any way, which is evidence for rapid deposition,...
You go on to deny that this is evidence. Hard to have a discussion with someone who denies that, makes the whole conversation futile.
I didn't deny this was evidence, and you didn't quote my actual response. I asked about your evidence for rapid deposition, and the question remains unanswered. Undisturbed strata certainly isn't evidence of rapid deposition - lack of disturbance of strata is something that can only happen after the strata was deposited. The absence of tectonic activity after deposition is no indicator of what happened during deposition.
You need evidence of rapid deposition, but you won't find it because rapid deposition is impossible. Tiny sediments falling out of suspension is an extremely slow process even in quiet water, and in the active water of your waves and tides and inundations tiny sediments would not fall out of suspension.
Percy writes:
Faith writes:
That suggests there were no time gaps between layers.
The unconformities are time gaps between layers.
The "unconformities" are merely missing strata, time gaps only on your theory but not mine, and missing layers are more consistent with the Flood than with the Time Scale.
What you're saying makes no sense. Whether strata were deposited in hours or eons they still represent spans of time, so missing strata are gaps in time whether the Flood happened or not. Why do you believe missing layers are more consistent with the Flood? How do missing layers happen in a flood scenario?
I was saying that there should be visible erosion between layers all over the place if the Time Scale were correct, not just here and there in small amounts, and the erosion should be very apparent, cutting into strata to some depth, making obviously visibly irregular contact lines.
You're repeating the same error you've made in the past about erosion. Erosion levels a landscape. These landscapes were created by erosion:
Landscapes like this are very unlikely to become preserved as strata, but I've explained why many times now and I'm not going to explain again. Read back in the thread.
Streams and rivers channel water will cut into a landscape, and such channels are preserved if the strata are preserved. The Kaibab was exposed to erosion carving channels up to a hundred feet deep before the Moenkopi was deposited atop it. Here's the description from the USGS Kaibab Limestone Webpage:
quote:
Unconformable contact with underlying Woods Ranch Member of Toroweap Formation attributed to solution erosion and channel erosion; average relief about 10 ft (3 m). Some channels have eroded as much as 150 ft (45 m) into the Woods Ranch in western half of map area. Erosion channels were filled with sandy cherty limestone typical of the Fossil Mountain, providing an extra thickness of the Fossil Mountain.
Do you ever wonder why the Painted Desert is a bunch of mounds, wonder why the material between mounds eroded away while the mounds did not? It's because the material between the mounds was softer, and it was softer because it wasn't lake deposits of limestone and volcanic ash. It was land. Volcanic ash would have fallen on land and lake alike, but in a short time (geologically speaking) the volcanic ash on the land would have washed into the rivers and lakes.
Rivers eventually silt up and change course, so it seems like we should see siltstone layers in the Chiinle, and we do.
The few examples of erosion between layers that have been posted over the years are minuscule compared to what should be there,...
You keep making this silly and untrue assertion. For example, about half the layers of the Grand Canyon have unconformities between them. I've provided this list to you before, here it is again:
  • Supergroup/Tapeats: unconformity
  • Muav Limestone/Temple Butte: unconformity
  • Surprise Canyon Formation/Supai Group: unconformity
  • Formations within the Supai: unconformity at top of each
  • Supai Group/Hermit Shale: unconformity
  • Hermit Shale/Coconino Sandstone: unconformity
  • Coconino Sandstone/Toroweap Formation: unconformity
  • Toroweap Formation/Kaibab Limestone: unconformity
  • Kaibab Limestone/Moenkopi Formation: unconformity
That's a lot of unconformities. They are, with the exception of the Coconino, marine strata formed through Walther's Law, where sea transgressions grind landscapes away. Most terrestrial erosional features created by rivers and lakes and so forth would have been obliterated.
...and easily enough explained as occurring after the strata were laid down, due to water running between the layers, or even tectonic disturbance that displaces them to a small extent, especially down near the GU where such erosion is most evident, according to my scenario.
Your scenario is just something you made up that has no evidence. You are correct about one thing, that the Great Unconformity represents a great deal of erosion. The Vishnu Schist once had mountains above it to a height of six miles that eroded away before the layers of the Grand Canyon Supergroup were deposited before being tilted and themselves mostly eroded away.
PaulK asked me to produce evidence of this and it's a fair request but it would take more time and energy than I've got right now.
No amount of time and energy will find what doesn't exist.
Percy writes:
The geologic timescale has not ended. It cannot end unless time ends.
Your faith is touching, but no, the Geological Time Scale is an artificial invention of Historical Geology based on the Geological Column with its fossils, it has no reality, it marks no real time, it came to an end when the column came to an end, at the end of the Flood which is marked by all that tectonic moving and shaking.
This is just a bald declaration with no evidence or rationale. It also includes a pretty bad misunderstanding. The geologic timescale cannot be based upon the geologic column because they are one and the same. They're synonyms. The geologic timescale is a conceptualization of information from all the stratigraphic columns around the world. Your are correct that it has no material existence in that it is conceptual, the way the Periodic Table of the Elements is conceptual. It can't end by definition, as has been explained a number of times.
Faith writes:
But as long as we've got a stack that climbs from Cambrian to Holocene or Eocene or close enough, whether or not there are some missing periods, that's what I mean by complete because it spans the entire Geological Time Scale.
And besides, the "missing" periods are more consistent with the Flood than the Time Scale anyway.
You're replying to yourself?
Anyway, you haven't done anything except repeat your bald assertion again. I can only repeat the question. How can a stratigraphic sequence that has missing periods and nothing before the Cambrian be considered complete? It's a rhetorical question, since by definition it cannot.
Percy writes:
A stratigraphic column with strata from the Cambrian to the present with missing periods is not complete, for two reasons. First, it has missing periods. Second, it's missing about 4 billion years of the geologic timescale before the Cambrian. I think what your trying to describe is a stratigraphic column that includes strata from each geologic period from the Cambrian to the present. That's not a complete stratigraphic column.
Well, first, your four billion years are imaginary and not real,...
There is evidence for approximately four billion years of geologic history, and other evidence points to an age of the Earth of about 4.56 billion years. There is no evidence for what you're pushing.
...second, your missing periods are imaginary and not real, all that's missing is some sedimentary layers your theory says should be there.
There is evidence of the unconformities. There is no evidence for what you're pushing.
But my theory says there's no reason to expect sediments to be consistently deposited by the Flood.
You don't have a theory - you have some cockamamie ideas based on your own personal Genesis interpretations. Your confabulations are so distant from reality that it's hard to fathom why you don't just invoke God. No one would fault you for that. But you're for some reason trying to contrive naturalistic explanations for miraculous events while not understanding almost any science and having no intuitive feel for how the real world actually works.
And the point I'm trying to make doesn't require the whole time scale to be there anyway,...
Yes, exactly. And yet you claimed the entire geologic timescale was represented, which is incorrect, and so your error was pointed out.
...just the "oldest" and the "youngest" so that any deformation or erosion that occurred can be shown to have occurred to the entire range of strata all at once as a block or unit and not to individual layers.
No one ever questioned that a stratigraphic column would tilt together. In fact, the only one who has questioned this is you, who thinks the Supergroup tilted independently of the layers above.
Partial stacks make it harder to make this point,...
You may be looking at this in the wrong way. This stack of strata (I assume you're talking about Smith's diagram) is partial only in the sense that some time periods are not represented. The stack of strata is otherwise completely solid.
...but the whole range shows that all such disturbances occurred after all the strata were laid down.
An unconformity is not a disturbance, if by disturbance you mean strata being acted upon by tectonic forces.
And as a matter of fact even the partial stacks show the same thing to whatever level they happen to reach, which I'll say more about farther down.
The same what thing? You mean disturbances? If so, what disturbances are you referring to? The tilting? If so, why are you arguing about the tilting? No one questions the tilting, although keep in mind that Smith's diagram is probably like most geologic diagrams, with the vertical axis exaggerated. The tilting is likely not anywhere near as great as shown.
And don't forget that that doesn't mean nothing could happen to the strata in the future, such as erosion, faulting, folding, intrusions, etc., so obviously things aren't "over and done with" for these strata.
I'm so far from forgetting that it's a major point I've been making all along.
Say what? Do you get some perverse kick out of denying things you've obviously said? If the fact that things aren't "over and done with" for these strata has been a major point you've been making all along, then why did you say that things are "over and done with" for these strata? Contradict yourself much?
Just for a hoot, point me to where you've made this "major point I've been making all along."
It's the laying down of the strata that is over and done with, all of them in place from Precambrian to Recent is over and done with,...
Sedimentation is occurring all around the world today. Creation of new strata is not over and done with.
In the context of sedimentation upon the seafloor, let's step inside your Flood scenario for a minute. During the Flood sediments deposit on the sea floor as well as the land. As the Flood waters recede from the land they carry sediments back into the seas, which already have a great deal of left over sediment. The sediments continue deposition onto the sea floors. Where the sediments are sufficiently deep lithification has already begun.
The Flood ends. The land is uncovered by water and is once again exposed to the air. Rivers flowing off the continents deliver sediments into the seas. Rains cause runoff from the continents and deliver sediments into the seas. So the seas will always contain sediments, and deposition of sediments onto the sea floor will continue from the Flood right on up to the present.
Where do you see some demarcation of deposition between the end of the Flood and the present that would mark the end of the formation of strata?
...and THEN all the disturbances occurred, the erosion, the deformation etc. The whole point has been that the erosion and deformation have all occurred AFTER that, so of course they are still going on.
This is just made up with no evidence. If you want to offer evidence for your scenario then we can discuss it, but if you're just going to make up empty claims then all that need be said is that they're empty.
But the laying down is over and done with.
You may as well deny that rivers flow to the sea.
And the evidence is that the whole stack was eroded or deformed after it was all laid down and not during the laying down.
Given the unconformities, no, the entire stratigraphic column of the Grand Staircase region was not deposited continuously with no intervening erosion. It is true that the region was tectonically quiet during deposition, but this is only true of the Grand Staircase region, not the rest of the world.
I've answered this but let me answer it again.
You're just going to repeat your fictional account. Making stuff up is not an answer, and repeating the stuff you made up is still not an answer.
The rest of the world has only partial columns, the GS and Smith's cross section of England being the only columns that cover the entire range of time periods that I know of (the state of Tennessee has all of them but I can't find a cross section, just the map) It's just that it's harder to prove my point with a partial column.
Faith, once again, there is no stratigraphic column in the world that completely represents the entire geologic column. Not in the Grand Staircase region, not in England, not in Tennessee, not anywhere.
But even in those there is also no evidence of disturbance until after the entire partial stack is in place, there is no disturbance between layers, but onlyl at the top, even if the top is somewhere down in the middle of the Time Scale.
You're repeating yourself. Here's that USGS quote again about tectonic activity surrounding the Colorado Plateau from the USGS webpage on the Colorado Plateau:
quote:
One of the most geologically intriguing features of the Colorado Plateau is its remarkable stability. Relatively little rock deformation (ex. faulting and folding) has affected this high, thick crustal block within the last 600 million years or so. In contrast, the plateau is surrounded by provinces that have suffered severe deformation. Mountain building thrust up the Rocky Mountains to the north and east and tremendous, earth-stretching tension created the Basin and Range Province to the west and south.
Back to your message:
You (and Geology) merely interpret the disturbance at what is now the top as having occurred in that time period whatever it happens to be, but there is no reason to do that.
Well, sure, there's no reason to conclude anything about when geologic events occurred, except for all the evidence. We've presented our evidence and your response is to either ignore it, be unable to comprehend it, or deny it. Meanwhile you have no evidence for any of these supposed Flood events that occurred a mere 4500 years ago.
All that's happened is that the strata above that point were eroded away, washed away in the Flood no doubt, leaving the partial column.
Above what point?
What is left nevertheless shows the same pattern: no disturbance until the whole stack was laid down, whole in this case being only a partial Time Scale.
See the USGS quote about the Colorado Plateau again.
If it goes only up to the Permian...
There you go with the pronouns again. If what only goes up to the Permian?
...it is still true that all the layers up to that point were laid down without any disturbance:...
We all agree the Colorado Plateau region was tectonically quiet for an extended period, but not in the surrounding regions, nor in many other places around the world. As far as Smith's diagram, I don't know much about the stratigraphy of England, but compared to today neither did Smith. I don't know how you can look at Smith's diagram, that you can't see anyway, and conclude there was no tectonic activity during the deposition of strata.
...the disturbance occurred at the Permian level but not in any Permian "time period."
What disturbance are you referring to?
If up to the Triassic, no disturbance until the Triassic level, not time period, then it occurred at that level. If only up to the Devonian, then no disturbance until the Devonian level not time period. Etc. The principle I'm claiming holds in all these cases you see, it's just that I can make the case more clearly with the couple of examples where the whole range of the Time Scale is represented, which happens to be only the Smith cross section and the Grand Staircase area as far as I know.
I can't figure out most of what you're saying here, except for the last part, so I'll just repeat that there are no complete stratigraphic columns anywhere in the world with respect to the geologic timescale.
--Percy

This message is a reply to:
 Message 434 by Faith, posted 06-07-2018 10:31 AM Faith has replied

Replies to this message:
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Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 500 of 877 (834657)
06-09-2018 5:29 PM
Reply to: Message 436 by Faith
06-07-2018 10:48 AM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
Faith writes:
You want me to support my claim that the erosion in the GC is very little and very ambiguous compared to what it should be if the Time Scale were correct, and I think that is a fair request but I'm not up to it at the moment, sorry. I do think this has been covered enough times over the years to be familiar to anyone who has been following this discussion, however. But that's not my argument, I'm just not up to the research right now, sorry.
No, of course you can't spend any time on research. How could you post 12 messages a day if you had to waste your time researching and providing support for what you say? Much easier and faster to repeat the same old bald assertions and made up stories over and over again.
--Percy

This message is a reply to:
 Message 436 by Faith, posted 06-07-2018 10:48 AM Faith has not replied

  
Faith 
Suspended Member (Idle past 1464 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 501 of 877 (834667)
06-09-2018 7:11 PM
Reply to: Message 499 by Percy
06-09-2018 4:58 PM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
ou're repeating the same error you've made in the past about erosion. Erosion levels a landscape. These landscapes were created by erosion:
Erosion carves canyons and cliffs and monuments and hoodoos and gullies and valleys and so on and so forth..

This message is a reply to:
 Message 499 by Percy, posted 06-09-2018 4:58 PM Percy has seen this message but not replied

Replies to this message:
 Message 503 by edge, posted 06-09-2018 9:07 PM Faith has replied

  
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 502 of 877 (834669)
06-09-2018 8:39 PM
Reply to: Message 442 by Faith
06-07-2018 5:41 PM


Re: Video on the formation of the Grand Canyon
Faith writes:
Has anybody ever reported seeing this dry and crumbly rock that you are talking about? Odd that you are so certain of your own wild guess against my far ore reasonable guess.
Why is this coming as a surprise to you? Of course lithification is a gradual process. If the weight of overlying sediments wasn't enough and/or the length of time buried wasn't enough, then the strata will incompletely consolidate, leaving you with a soft and crumbly rock. The rock at Bryce Canyon can be like this. This is from Landscape & Geology in Bryce Canyon National Park:
quote:
Much of Bryce Canyon's rock is limestone, relatively soft and crumbly, which was easily eroded into the park's numerous intricate hoodoos.
You seem to doubt that water would be forced out under pressure. Here's an interesting video where a roll of wet toilet paper is placed in a hydraulic press. I won't bore you with the whole video, this is positioned just as he crushes the wet toilet paper:
All the water is forced out because of the pressure. This is what happens to crushed sediments. As the volume decreases the water is forced out of the interstices between particles and in essence floats upward in the stratigraphic column because it is both mobile and less dense.
'
How do you get fractures in dough or clay? How would strains created by uplift create a meandering fracture pattern, which is never observed anyway,
You've never folded and pulled apart a ball of dough or clay? I get cracks when I do that.
Folding and pulling apart? How does that match what we're talking about. The analogy is to your Flood scenario and what happens when bending and stretching results from the Kaibab Uplift. Just how much bending and stretching are you imagining was involved? However much that is, imagine your clay or dough being stretched by the same amount.
In estimating the amount of bending and stretching remember that the vertical is exaggerated in the diagrams - your wet and malleable rock should be able to handle this small amount of bending and stretching without cracking with no problem. I know this is your magic rock that does anything you need it to do, but either it is malleable and can handle a little bending/stretching, or it's not malleable and it will fracture. Which is it?
Why are you postulating wet and malleable rock anyway? It's made up and doesn't exist, and your Flood scenario seems to require rock that fractures rather than bends and stretches.
And I've never said anything about a meandering pattern, where are you getting that?
I'm getting that from the fact that the Colorado River meanders.
It looks to me like the canyon/river cut through the uplift below the apex of the uplift but not around the bottom on the south where you would expect it to cut since it can't climb the uplift.
For the umpteenth time and as many people have told you, the river originally carved it's course when the region was lower in elevation and more level in topography. The river downcut as the region uplifted.
A fracture in the rise would provide that channel which wouldn't otherwise occur on any scenario that I can see.
Fractures wouldn't run across the plateau, and they wouldn't meander.
--Percy

This message is a reply to:
 Message 442 by Faith, posted 06-07-2018 5:41 PM Faith has replied

Replies to this message:
 Message 509 by Faith, posted 06-10-2018 12:27 AM Percy has replied

  
edge
Member (Idle past 1726 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


(1)
Message 503 of 877 (834671)
06-09-2018 9:07 PM
Reply to: Message 501 by Faith
06-09-2018 7:11 PM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
Erosion carves canyons and cliffs and monuments and hoodoos and gullies and valleys and so on and so forth..
All of these are intermediate products. The ultimate product of erosion is a coastal plain.
Admittedly, this could be exceedingly slow. Nevertheless, it will happen given enough time and erosive processes. And some rock will erode faster than others, depending on climate. We will not see this in our lifetimes, but that does not mean that it isn't happening and hasn't happened in the past.

This message is a reply to:
 Message 501 by Faith, posted 06-09-2018 7:11 PM Faith has replied

Replies to this message:
 Message 507 by Faith, posted 06-09-2018 11:07 PM edge has not replied

  
Minnemooseus
Member
Posts: 3944
From: Duluth, Minnesota, U.S. (West end of Lake Superior)
Joined: 11-11-2001
Member Rating: 10.0


(2)
Message 504 of 877 (834672)
06-09-2018 9:10 PM
Reply to: Message 489 by Percy
06-09-2018 10:49 AM


Tilting is deformation
Tilting is not deformation. Deformation is bending, folding, stretching, compression or faulting. Both tilting and deformation can be present (as seems to be the case in the diagram but that you probably can't see), but they are not synonyms. Maybe Edge or Moose can be more definitive.
Tilting is deformation. In a local outcrop it may be viewed as a low intensity deformation, but in the bigger picture, tilting is going to be an aspect of folding and/or faulting.
Or can you come up with a scenario where a rock unit can be tilted without folding and/or faulting being involved?
Moose

This message is a reply to:
 Message 489 by Percy, posted 06-09-2018 10:49 AM Percy has seen this message but not replied

  
Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7


Message 505 of 877 (834673)
06-09-2018 9:18 PM
Reply to: Message 451 by Faith
06-08-2018 1:14 PM


Re: Video on the formation of the Grand Canyon
Faith writes:
OK, thanks for the explanation, but it's very odd that a journalist would put words in a geologist's mouth like that. Mistakes in understanding, sure, that wouldn't be unexpected from a journalist, but this sounds like a complete fabrication for which he could even be sued.
In Junior High I participated in a science fair where we transmitted sound across a room using light. We carefully explained this to the reporter. In the paper it became something like, "The light became brighter when they spoke into a microphone."
The quality of science reporters varies. Becky Oskin, the reporter at Live Science, is apparently a respected science writer, a member of the National Association of Science Writers with many articles in Scientific American, so she's a good one. My guess is that "underground folding" was her translation of when Dickinson mentioned the role of subduction of the Pacific plate, which subducts at a shallow angle and causes strips of crust to pile up at great depth but well inland, like beneath the Kaibab Uplift. Maybe Edge has an opinion on that possibility.
--Percy

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 Message 451 by Faith, posted 06-08-2018 1:14 PM Faith has not replied

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 Message 506 by edge, posted 06-09-2018 10:20 PM Percy has replied

  
edge
Member (Idle past 1726 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 506 of 877 (834674)
06-09-2018 10:20 PM
Reply to: Message 505 by Percy
06-09-2018 9:18 PM


Re: Video on the formation of the Grand Canyon
My guess is that "underground folding" was her translation of when Dickinson mentioned the role of subduction of the Pacific plate, which subducts at a shallow angle and causes strips of crust to pile up at great depth but well inland, like beneath the Kaibab Uplift. Maybe Edge has an opinion on that possibility.
My first blush is that most people see mountains as forming by compression, and when that happens, you end up distorting the layers of a rock body. Consequently when you talk about an uplift, they think more in terms of alpine orogenies where tectonic plates collide. I believe the word used in the article was 'pinching', just as you get a bump when you pinch your skin. This isn't the only way to get uplift.
In fact, my guess is that the deformation causing the Kaibab uplift was caused more by tension rather than compression, and related to thermal effects in the asthenosphere. Keeping in mind, of course, that there can be local compression adjacent to faults even in an overall extensional environment. Also, I once referenced a paper in this forum in which the East Kaibab fold was referred to as a monocline which is a kind of 'drape fold'. When you combine that with the fact that the nearby Great Basin was created in an extensional environment sometime after the Laramide Orogeny, I think this is the best explanation.
"Underground folding", as a compressive event, just doesn't really make sense and is dynamically problematic. Extension, however can result in simple tilting that we see all over the Colorado Plateau. Even in very large 'blocks'.

This message is a reply to:
 Message 505 by Percy, posted 06-09-2018 9:18 PM Percy has replied

Replies to this message:
 Message 508 by Faith, posted 06-10-2018 12:21 AM edge has replied
 Message 593 by Percy, posted 06-13-2018 12:03 PM edge has replied

  
Faith 
Suspended Member (Idle past 1464 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 507 of 877 (834675)
06-09-2018 11:07 PM
Reply to: Message 503 by edge
06-09-2018 9:07 PM


Re: Strata eroded or deformed in blocks proves Geo Column / Time Scale over and done with
Erosion carves canyons and cliffs and monuments and hoodoos and gullies and valleys and so on and so forth..
All of these are intermediate products. The ultimate product of erosion is a coastal plain.
Irrelevant. I'm saying one simple thing:Erosion carves canyons and cliffs and monuments and hoodoos and gullies and valleys and so on and so forth. The statement is true, all these things exist and they are caused by erosion.
Edited by Faith, : No reason given.

This message is a reply to:
 Message 503 by edge, posted 06-09-2018 9:07 PM edge has not replied

Replies to this message:
 Message 520 by JonF, posted 06-10-2018 9:22 AM Faith has replied
 Message 594 by Percy, posted 06-13-2018 1:15 PM Faith has replied

  
Faith 
Suspended Member (Idle past 1464 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 508 of 877 (834676)
06-10-2018 12:21 AM
Reply to: Message 506 by edge
06-09-2018 10:20 PM


Re: Video on the formation of the Grand Canyon
My guess is that the author of the article knew what she was talking about even if she didn't get it exactly right, and there's no reason to be trying to second-guess her anyway. She wrote:
article about Dickinson research writes:
Plus, there's the problem of the Kaibab uplift, a pinch in the Colorado Plateau where the rocks swell up due to underground folding. Sitting near the head of the Grand Canyon, the Kaibab uplift is a 650-foot (250-meter) barrier that any prehistoric lake or river must have carved through before dropping down into the future gorge. The preserved lake beds show water levels were never high enough to cross the uplift, Dickinson said.
(As quoted in my Message 215)
Neither your guesses nor Percy's -- and his understanding is often weirdly wrong anyway -- is going to tell us either what Dickinson actually said or what the author intended by her description.
Edited by Faith, : No reason given.
Edited by Faith, : No reason given.

This message is a reply to:
 Message 506 by edge, posted 06-09-2018 10:20 PM edge has replied

Replies to this message:
 Message 510 by edge, posted 06-10-2018 12:34 AM Faith has replied
 Message 595 by Percy, posted 06-13-2018 4:45 PM Faith has not replied

  
Faith 
Suspended Member (Idle past 1464 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 509 of 877 (834677)
06-10-2018 12:27 AM
Reply to: Message 502 by Percy
06-09-2018 8:39 PM


Re: Video on the formation of the Grand Canyon
No I DON'T doubt that water would be forced out of rocks under compaction for pete's sake, this is just another of your weird misinterpretations. I suppose you aren't doing this purposely but I could almost wish you were so there might be some hope that you could sober up and stop doing it.
Edited by Faith, : No reason given.

This message is a reply to:
 Message 502 by Percy, posted 06-09-2018 8:39 PM Percy has replied

Replies to this message:
 Message 636 by Percy, posted 06-15-2018 1:44 PM Faith has replied

  
edge
Member (Idle past 1726 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 510 of 877 (834678)
06-10-2018 12:34 AM
Reply to: Message 508 by Faith
06-10-2018 12:21 AM


Re: Video on the formation of the Grand Canyon
Neither your guesses nor Percy's -- and his understanding is often weirdly wrong anyway -- is going to tell us either what Dickinson actually said or what the author intended by her description.
That doesn't seem to have stopped you from telling us what he said.

This message is a reply to:
 Message 508 by Faith, posted 06-10-2018 12:21 AM Faith has replied

Replies to this message:
 Message 511 by Faith, posted 06-10-2018 12:35 AM edge has not replied

  
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