Register | Sign In


Understanding through Discussion


EvC Forum active members: 64 (9164 total)
2 online now:
Newest Member: ChatGPT
Post Volume: Total: 916,803 Year: 4,060/9,624 Month: 931/974 Week: 258/286 Day: 19/46 Hour: 0/1


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Growing the Geologic Column
edge
Member (Idle past 1733 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 631 of 740 (734947)
08-03-2014 8:07 PM
Reply to: Message 627 by herebedragons
08-03-2014 7:30 PM


No, it doesn't. If a fault slid 10 feet then stopped, and then sediment was deposited on top of it and then it slid again, the fault could then continue into the new layer.
This would be called a 'growth fault'. It implies contemporaneous sedimentation and faulting. When faulting stops, sedimentation continuous and eventually covers the top edge of the fault plane.
It could also deform the layers above, it would depend on forces and resistance involved (like what type of material the new deposit is).
The last stage of a growth fault would be minor draping of the sediments across a very small fault scarp.
This is sort of a special case for cross-cutting relationships which we usually consider to ironclad. Usually, if a fault cuts a rock, it is younger than the rock (or sediment deposit if not lithified). However, what happens when the fault terminates within a given layer? That means that the layer is both older (in part), and younger (in part) than the fault.
Whether intended or not, the diagram in question shows a large number of growth faults (crossing several strata in this case); which I would expect...

This message is a reply to:
 Message 627 by herebedragons, posted 08-03-2014 7:30 PM herebedragons has not replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 632 of 740 (734948)
08-03-2014 8:08 PM
Reply to: Message 629 by edge
08-03-2014 7:41 PM


I already knew that.

This message is a reply to:
 Message 629 by edge, posted 08-03-2014 7:41 PM edge has not replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 633 of 740 (734949)
08-03-2014 8:14 PM
Reply to: Message 627 by herebedragons
08-03-2014 7:30 PM


No, it doesn't. If a fault slid 10 feet then stopped, and then sediment was deposited on top of it and then it slid again, the fault could then continue into the new layer.
But that would show up as a different upper surface on the new deposit (originally horizontal always) from the one it's depositing on which would have been distorted by the fault. I don't see that kind of thing anywhere on the diagram
Edited by Faith, : No reason given.

This message is a reply to:
 Message 627 by herebedragons, posted 08-03-2014 7:30 PM herebedragons has not replied

Replies to this message:
 Message 634 by edge, posted 08-03-2014 8:23 PM Faith has replied

  
edge
Member (Idle past 1733 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 634 of 740 (734951)
08-03-2014 8:23 PM
Reply to: Message 633 by Faith
08-03-2014 8:14 PM


But that would show up as a different upper surface on the new deposit (originally horizontal always) from the one it's depositing on which would have been distorted by the fault. I don't see that kind of thing anywhere on the diagram
At the scale of this diagram, you wouldn't.
Besides, your parallel surfaces notion is spurious for this type of sedimentation. Clearly, a stratum that pinches out in any direction does not have parallel contacts, and because of compaction, is very unlikely to maintain horizontality. There is a lot of that in this diagram.
It probably isn't part of the geological column...

This message is a reply to:
 Message 633 by Faith, posted 08-03-2014 8:14 PM Faith has replied

Replies to this message:
 Message 635 by Faith, posted 08-03-2014 9:13 PM edge has replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 635 of 740 (734956)
08-03-2014 9:13 PM
Reply to: Message 634 by edge
08-03-2014 8:23 PM


But that would show up as a different upper surface on the new deposit (originally horizontal always) from the one it's depositing on which would have been distorted by the fault. I don't see that kind of thing anywhere on the diagram
At the scale of this diagram, you wouldn't.
Besides, your parallel surfaces notion is spurious for this type of sedimentation. Clearly, a stratum that pinches out in any direction does not have parallel contacts, and because of compaction, is very unlikely to maintain horizontality. There is a lot of that in this diagram.
I already took into account that it wouldn't maintain horizontality but it should at first since it would just lie over whatever was already there, distorted or not, just not after being distorted itself.
Here:
It probably isn't part of the geological column...
It looks to me like it is.

This message is a reply to:
 Message 634 by edge, posted 08-03-2014 8:23 PM edge has replied

Replies to this message:
 Message 636 by edge, posted 08-03-2014 9:31 PM Faith has replied
 Message 655 by Taq, posted 08-04-2014 1:05 PM Faith has replied

  
edge
Member (Idle past 1733 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 636 of 740 (734959)
08-03-2014 9:31 PM
Reply to: Message 635 by Faith
08-03-2014 9:13 PM


I already took into account that it wouldn't maintain horizontality but it should at first since it would just lie over whatever was already there, distorted or not, just not after being distorted itself.
If faulting continued after the blue layer, then the brown and orange should be more offset. Which has been my point all along.
In a compaction situation, which is where most of the deformation is coming from the light blue layer would not have that hump on the left side of the diagram. All sediments are trending downward.
It looks to me like it is.
I was being facetious.

This message is a reply to:
 Message 635 by Faith, posted 08-03-2014 9:13 PM Faith has replied

Replies to this message:
 Message 637 by Faith, posted 08-03-2014 9:36 PM edge has replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 637 of 740 (734961)
08-03-2014 9:36 PM
Reply to: Message 636 by edge
08-03-2014 9:31 PM


yes the brown and the orange should also be more offset, but the main point of the diagram was to show that new layers after a fault would not conform to the shape of the earlier ones, either when just deposited or after the fault was extended. And that diagram shows many differences in shape of layers so there's no problem with such a situation being recorded there.
Edited by Faith, : No reason given.
Edited by Faith, : No reason given.
Edited by Faith, : remove evil talk

This message is a reply to:
 Message 636 by edge, posted 08-03-2014 9:31 PM edge has replied

Replies to this message:
 Message 639 by edge, posted 08-03-2014 11:41 PM Faith has replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 638 of 740 (734963)
08-03-2014 9:56 PM
Reply to: Message 626 by Percy
08-03-2014 7:29 PM


Re: Flood debunkery revisited
You have a certain genius for getting everything I say so wrong I usually see little point in trying to answer you. I never said waves scour the landscape, I've said the forty days and nights of rain which would bring about something on the order of millions of local scale floods all at once. THAT is what scours the land. Then all the sediments that have been washed down in those countless small floods get mixed into the rising ocean water etc etc etc etc etc. But there you are with your local flood again as if it holds any clues to what a Flood a bazillion times its size would do.

This message is a reply to:
 Message 626 by Percy, posted 08-03-2014 7:29 PM Percy has replied

Replies to this message:
 Message 656 by Percy, posted 08-04-2014 1:05 PM Faith has replied

  
edge
Member (Idle past 1733 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 639 of 740 (734972)
08-03-2014 11:41 PM
Reply to: Message 637 by Faith
08-03-2014 9:36 PM


yes the brown and the orange should also be more offset, but the main point of the diagram was to show that new layers after a fault would not conform to the shape of the earlier ones, either when just deposited or after the fault was extended. And that diagram shows many differences in shape of layers so there's no problem with such a situation being recorded there.
Except that the faults occurred at various time during deposition and very little has occurred since the Tertary, thereby refuting your premise that all faulting took place after all deposition.

This message is a reply to:
 Message 637 by Faith, posted 08-03-2014 9:36 PM Faith has replied

Replies to this message:
 Message 640 by Faith, posted 08-03-2014 11:51 PM edge has replied

  
Faith 
Suspended Member (Idle past 1471 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 640 of 740 (734975)
08-03-2014 11:51 PM
Reply to: Message 639 by edge
08-03-2014 11:41 PM


It's not a premise, I believe that's what the diagram evidences.

This message is a reply to:
 Message 639 by edge, posted 08-03-2014 11:41 PM edge has replied

Replies to this message:
 Message 641 by edge, posted 08-04-2014 12:08 AM Faith has not replied

  
edge
Member (Idle past 1733 days)
Posts: 4696
From: Colorado, USA
Joined: 01-09-2002


Message 641 of 740 (734981)
08-04-2014 12:08 AM
Reply to: Message 640 by Faith
08-03-2014 11:51 PM


It's not a premise, I believe that's what the diagram evidences.
It is a notion that you picked up somehow and now use it to base your arguments for every section that you see.
Oh, and what you believe doesn't make any sense, for all of the reasons we have given you.
ABE: But I notice that you don't take issue with my statement that your premise is wrong, but rather make an argument regarding definitions. Is that your intent?
Edited by edge, : No reason given.
Edited by edge, : No reason given.

This message is a reply to:
 Message 640 by Faith, posted 08-03-2014 11:51 PM Faith has not replied

  
Percy
Member
Posts: 22495
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


(1)
Message 642 of 740 (734992)
08-04-2014 9:12 AM
Reply to: Message 482 by Faith
07-31-2014 1:17 PM


Re: back to interpretive versus observational science
Faith writes:
Percy writes:
Whether it's a paleontologist examining a footprint from millions of years ago or a detective examining a footprint from a crime committed the night before, they're both interpreting evidence.
The difference, an enormous one, is that the paleontologist has never seen the creature that made the footprint whereas the forensic criminologist has seen millions and has a huge database just in his own experience to work from in solving the crime, not to mention the collective experience of all other forensic criminologists, and in fact the whole human race, who are also direct witnesses to the footprints of other human beings.
You're claiming the detective has more data based upon more recent evidence and more colleagues than the paleontologist, but the only thing you've said that is true is that the detective's database was gathered from data that isn't as old. Whatever the specifics, they both have plenty of data for carrying out their jobs. The detective can look at the footprint and tell that it was a Nike Hyperdunk. The paleontologist can look at the footprint and tell that it was an iguanodon.
But even if neither of them had any database or colleagues, how is examining and analyzing any footprint not an interpretation of evidence?
Well, the light from the supernova is arriving in the present and can be measured in many ways and compared to other celestial sources of light, which is a very different matter from interpreting events on earth supposed millions of years ago. You guys seem not to get how you have no REFERENTS from events in the distant past, and no witnesses, and all your data is completely mute and inert.
What you say doesn't accord with reality. A paleontologist can interpret (assess, analyze, examine, whatever) the evidence provided by a footprint and tell it was made by an iguanodon. Evidence is evidence, and even when millions of years old it can speak volumes.
I wonder. If unwitnessed evidence from long ago were to prove you right, would you still ignore it?
You try to infer things from supposed similarities in the present, and I'm not going to say you get it all wrong but the point is you have no way to verify any conclusion...
What makes you think the conclusions of the paleontologist about the footprint can't be verified by other paleontologists, just as the detective's conclusions can be verified by other detectives?
You can know lots of things about the rocks and the fossils too, but you can't really know anything about the past in which they were formed just by studying them.
I think you don't really believe this and are only saying it out of habit. You've made many statements about what happened in the past. Just an example of something very simple, we can examine a metamorphic layer and know it has been heated, indicating it was once much closer to the mantle. We can often tell by how much it was heated, and we can tell the type of the original sediments, which tells us some things about the environment in which those sediments were deposited. The heating reset the radiometric clocks, and so we can find the time when it cooled, locking any radiometric materials into crystalline structures.
Obviously your claim that we tell nothing about events in the past from ancient evidence is false. I think what you're actually getting at when you talk about plausibilities is scientific tentativity. In science nothing is ever 100% certain. Any theory or conclusion can be falsified. Degree of certainty is a function of the amount of interconnected confirming evidence. There can be no blanket exclusion of evidence of a certain type or age. One doesn't ignore any evidence in science. All the evidence must be considered and followed where it leads.
So you can throw away your arbitrary rules of what evidence is and isn't permitted. You have to consider all evidence, and if you think our evidence doesn't lead to our conclusions then you must show how.
Really, this idea that rocks tilting underground is absurd is what's absurd. You should look at all the cross sections I've been looking at. Tectonic forces move the rocks in relation to each other UNDERGROUND in an amazing variety of ways, even very long distances, as attested by the blizzard of fault lines you find on some cross sections. They are tilted against each other in all sorts of directions, to such an extent in fact that the idea that an angular unconformity is something special really gets called into question.
You're just repeating your assertion. You've never explained how buried layers of rock could tilt while not affecting the layers above, nor where all the cubic miles of rock disappeared to for those portions of the tilted layers that are no longer there. This is very simple, and I can illustrate. We begin with layers A through H. Note that all the layers are equal in extent (length on the page):
A______________________________________________
B______________________________________________
C______________________________________________
D______________________________________________
E______________________________________________
F______________________________________________
G______________________________________________
H______________________________________________
...............................................
...............Basement Rock...................
...............................................
...............................................
Now here's the same diagram after layers E, F, G and H have been tilted. These layers were once just as great in extent as layers A, B, C and D, and that extent represented thousands of cubic miles of material. Where did it all go?
A______________________________________________
B______________________________________________
C______________________________________________
D______________________________________________
..................HGFE.........................
...................\\\\........................
....................\\\\.......................
...............................................
And this question about where all the erosion would have gone has to be asked about a lot of those faults where it looks like a great deal of rock had to have been abraded away to get into the positions they are found in. They may not be quite as sharply tilted as an angular unconformity is but they are certainly tilted with respect to one another and whole chunks of strata have to be missing due to the movement alone.
I don't know what it is you're looking at. If you can provide an image that would be helpful, and then we can answer your questions.
Percy writes:
Above I used the example of a detective interpreting a footprint at a crime scene. You're like the detective who, after finding that the footprint belongs to his best friend, starts seeking "other interpretations."
Very cute but I don't think so. I really don't think your interpretations suffice as the explanations you claim for them, they are open to other interpretations because they ARE interpretations. Unlike the testable claims of the hard sciences.
Scientists in all scientific fields are interpreting evidence and making testable claims, and that includes geology. If you think the claims don't stand up to scrutiny then you should test them, which is just what you're attempting to do in this thread, but you're doing it in fanciful and impossible ways. To continue the detective story, you're like the detective who once he discovers the footprint belongs to his best friend claims the footprint was carried to the crime scene from his friend's home by last night's rain. Hilarity ensues.
--Percy
Edited by Percy, : Typo.

This message is a reply to:
 Message 482 by Faith, posted 07-31-2014 1:17 PM Faith has not replied

  
Percy
Member
Posts: 22495
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


(1)
Message 643 of 740 (734994)
08-04-2014 9:34 AM
Reply to: Message 484 by Faith
07-31-2014 2:16 PM


Re: Good for evil and evil for good, black for white and white for black, bitter fr swt..
Faith writes:
The written word can be misunderstood but the mute natural world is in itself undecipherable.
I suspect that, as is your habit, you were just grasping for whatever argument was convenient at the time without regard to consistency or rationality, but if you *do* really believe this then your participation in this thread with its many (faulty) analyses of evidence from the natural world makes no sense.
Why did it take so long for the human race to arrive at any decent scientific understanding of anything in the natural world?
Consistency evidently didn't even extend as far as the next sentence. If the natural world is "undecipherable" (previous sentence), then how is it we have any scientific understanding at all (current sentence).
--Percy
Edited by Percy, : Typo.

This message is a reply to:
 Message 484 by Faith, posted 07-31-2014 2:16 PM Faith has not replied

  
Percy
Member
Posts: 22495
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


(1)
Message 644 of 740 (734995)
08-04-2014 9:59 AM
Reply to: Message 486 by Faith
07-31-2014 2:33 PM


Re: Cardenas
Faith writes:
Absolute nonsense, Percy. For one thing everybody has assumptions and putting them aside isn't even possible in most cases.
The only assumptions we're making is that the universe is comprehensible. Even our belief that the laws of the universe are unchanged today from millions of years ago is not an assumption, as there is copious evidence that those laws have not changed in any detectable way.
If you think we have unwarranted assumptions then you can bring them to our attention and we can talk about them, but so far we've been able to provide evidence for everything you've accused us of assuming.
In the same way we will call your unwarranted assumptions to your attention, and that the Bible contains the truth about geological history is an unwarranted assumption on your part. If you're doing science, which is what you should be doing in this thread, then you must cast your assumptions aside and provide evidence for your positions.
Scientifically we must begin with a clean slate and then let the evidence guide our thinking.
But I don't think it's missing, I think the evidence is glaringly obvious wherever you look around this planet. I think science thinks it's missing because science is operating under a delusional theory that colors everything so they can't see the truth about the rocks they are looking at.
So you say, but you're the one who can't seem to provide any explanations of the evidence that don't violate the laws of physics, and who makes up irrational self-serving rules like that the natural world is undecipherable or that where science conflicts with the Bible that science is wrong.
It makes no sense to look at rocks that were clearly formed in a worldwide catastrophic event involving water...etc...
Obviously marine sediments involve water, but there's no evidence of a worldwide catastrophe that laid down the entire geologic column in a single year. The point that I made, and that you ignored, is that you've been able to offer no evidence of a global flood other than to look at the geologic layers and state, "These say 'Flood' to me."
--Percy

This message is a reply to:
 Message 486 by Faith, posted 07-31-2014 2:33 PM Faith has not replied

  
Percy
Member
Posts: 22495
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


(1)
Message 645 of 740 (734996)
08-04-2014 10:05 AM
Reply to: Message 487 by Faith
07-31-2014 2:35 PM


Re: Good for evil and evil for good, black for white and white for black, bitter fr swt..
Faith writes:
You guys are good at assertions about such things, with a TOTAL absence of the evidence you think you are so enamored of. My theology is solidly biblical. And I keep trying to avoid such subjects on threads like these but that would mean ignoring the zillion challenges that people throw at me about them.
We all wish it were true that you try to avoid arguments based upon God and Bible in the science threads, but unfortunately it is not. When asked in this thread to support your assumption that there must have been a global Flood, instead of evidence you cited God and Bible, and when challenged and requested to focus on the evidence you instead vigorously defended what you see as your right to use God and Bible as arguments in science threads.
If in the future in this thread (and all science threads) you would actually like to avoid citing God and Bible and keep your attention focused on the evidence I'm sure we would all find it welcome.
--Percy

This message is a reply to:
 Message 487 by Faith, posted 07-31-2014 2:35 PM Faith has not replied

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024