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Author Topic:   Evidence that the Great Unconformity did not Form Before the Strata above it
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Message 898 of 1939 (755309)
04-07-2015 11:37 AM
Reply to: Message 863 by Faith
04-06-2015 2:58 PM


Re: To HBD: TECTONIC SPEED, QUAKES AND HEAT Pt. 1
Hi Faith,
Welcome back. I'm sorry you were suspended. I'm reading through the posts from the last 24 hours and will comment as I go.
Faith writes:
What I said I'd pray about was specific: PaulK's post about the magnitude of earthquakes, since I'd suggested that maybe a faster tectonic movement wouldn't produce a great frequency of earthquakes but fewer very big quakes in a short period of time. I wasn't saying I'd pray about the whole argument:
In the science threads it would be best if prayer weren't treated as if it were a demonstrated method of gaining scientific knowledge.
Just for the record, you CAN'T debunk something I KNOW to be true, and I KNOW the earth is not millions of years old, I know there were no humanoids before Adam and Eve, I KNOW there was no death before the Fall, and I KNOW tectonic movement had to occur since the Flood, and that being the case the oceans never boiled and it's just a matter of understanding the math rightly. If you start with worldly assumptions you can only get worldly conclusions, but a Christian should start with Biblical assumptions.
In the science threads it would be best to only express great confidence about something when the scientific evidence strongly supports it.
From Message 865:
Before going on, where I may not be able to understand much anyway, I’d just stop to make the point that the calculations above get us to the SIZE of the heat source, which is about ten and a half billion cubic feet. According to an online calculator ‘’ that’s .07174028 or seven tenths of a cubic mile.
In case no one caught this, .07 is seven one-hundredths of a cubic mile, not seven tenths.

--Percy
EvC Forum Director

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Message 900 of 1939 (755311)
04-07-2015 11:56 AM
Reply to: Message 872 by Faith
04-06-2015 10:13 PM


Re: To HBD: TECTONIC SPEED, QUAKES AND HEAT Pt. 1
Faith writes:
No, in my scenario the plates ARE NOT moving at ten feet per day, they are moving at the rates you ascribe to them! Did you totally misread my description?
If HBD misread your description then I did too. Just a quick look back through the thread revealed this in Message 829:
Faith in Message 829 writes:
The fastest was the initial speed of 10 feet a day on either side of the Atlantic Ridge separating Europe from N. America, fast for continents to travel I guess but not "supersonic."
I was also surprised to see you say that you accept the rates HBD is using.
I think what you may actually have been trying to say is that you accept the current measured rates, but I don't think anyone thought you were questioning them. HBD is saying, in essence, that the current rates (which have been accurately measured and are not assumptions) projected back in time yield a picture that is consistent with all other evidence, and that your view that past rates were much greater is not.
I never claimed my own calculations are the equivalent of God's word and I can think of some choice names to call you for that.
I think people can be forgiven for not having a clear idea of the precise limits of what you claim to "KNOW" (your capitalization, not mine). As I suggested in my previous message, in the science forums it might be best to only claim knowledge of things that have strong scientific support.

--Percy
EvC Forum Director

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Message 901 of 1939 (755313)
04-07-2015 12:01 PM
Reply to: Message 883 by edge
04-07-2015 12:09 AM


Re: Moderator Request
edge writes:
But this is not necessarily how it happened. There could be only two major events depicted. It could be
1. ALL the strata laid down
2. Then tectonic lateral force folds / tilts lower section, causing eroded area between upper and lower.
Evidence, Faith, evidence. ...
In Faith's view there is no evidence that would help decide between her scenario and yours.

--Percy
EvC Forum Director

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Message 924 of 1939 (755406)
04-08-2015 7:00 AM
Reply to: Message 905 by Faith
04-07-2015 3:45 PM


Re: To HBD: TECTONIC SPEED, QUAKES AND HEAT Pt. 1
Faith writes:
HBD should know what I was claiming to know, since he claims to be a Christian.
I think we can be forgiven if we're all, including HBD, not precisely sure who you consider legitimately Christian. Your history is to deny Christian status to those who disagree with you.
Nor would most Christians grant that Christians all know the minds of other Christians. Certainly it is not unknown amongst devout evangelical Christians to hear the question, "What did you mean when you said..."
Also HBD is not the only participant. At a minimum there was at least one other person (namely me) who read your words and found the claims inappropriate and spectacularly overblown for a science discussion.
So as I suggested twice previously, in the science forums it might be best to only claim knowledge deriving from scientific methods and evidence.

--Percy
EvC Forum Director

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Message 925 of 1939 (755409)
04-08-2015 7:54 AM
Reply to: Message 909 by Faith
04-07-2015 4:13 PM


Re: Moderator Request
Faith writes:
Actually, in this particular case, where all I'm saying is that if it happened my way rather than his there would be fewer steps, evidence isn't even called for. It's just a statement of fact: IF it happened this way then there would be fewer steps. It's simply true as stated.
Since whichever way the Grand Unconformity happened would have left evidence behind, I'm trying to encourage the discussion to focus on that evidence.
ABE: But I do think that the appearance of say the lower part of Siccar Point should show obviously much older more decrepit rock as it were than the upper if it's really hundreds of millions of years older.
I'm avoiding becoming involved in the discussion, but I'm going to attempt a clarification of what I think people are trying to say to you on this point.
The appearance of age that you think you're seeing in the rocks at Siccar Point is actually just the effects of weathering. That appearance is a result of how long the rock has been exposed, the nature of the rock itself, and the type of weathering (wind, rain, sea spray, freeze/thaw cycles would be applicable at Siccar Point). This appearance has nothing to do with the age of the rock itself.
But buried rock shows no effects of weathering. Buried undisturbed rock does not show any effects of the passage of time - it will just sit unchanged for millions and millions of years.
I'm aware that the effects of weathering can extend some distance from an exposed surface, particularly a horizontal surface, but I'm going to have to throw myself on the mercy of the geologists for information about the nature and extent of those effects.
Concerning the appearance of age of the rocks at Siccar Point, you can't use that appearance as an indication of actual age. The lower layers are a very hard sandstone, the upper layers a softer sandstone. The softer sandstone is more vulnerable to erosion, and so where exposed it quickly comes to have an appearance that you interpret as ancient. But if you were to take a core of that sandstone you would find that where not exposed it has no appearance of age at all.

--Percy
EvC Forum Director

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Message 939 of 1939 (755493)
04-08-2015 8:01 PM


Moderator Note
I don't have any problem with the occasional diversion onto other topics, but if there's genuine interest in discussing other aspects, such as faith versus evidence, then someone should propose a new thread over at Proposed New Topics. I do want to put in a plug for the topic of this thread, which is the evidence showing how the Great Unconformity formed.

--Percy
EvC Forum Director

  
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Message 1047 of 1939 (755834)
04-12-2015 8:12 AM
Reply to: Message 1026 by edge
04-11-2015 3:06 PM


edge writes:
I don't see strata in that picture.
I know.
I had trouble seeing the strata, too. Also, in the past Faith has mistaken scree for something else.
Lines identify but also obscure boundaries, so arrows might serve better.
I am, as always, responding as I read forward. No need to do anything if it isn't relevant to the current discussion.

--Percy
EvC Forum Director

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Message 1054 of 1939 (755860)
04-12-2015 3:53 PM
Reply to: Message 1050 by Faith
04-12-2015 1:18 PM


Hi Faith,
I'm just trying to help discussion along, not participate and definitely not trying to make anyone look bad. You had said that you could see no strata, and I was only letting Edge know I thought the strata in the image might not be as apparent to others as they are to him. I also thought the scree that fills the lower region of the image isn't necessarily easily recognized as scree, especially since the image is rather small:
Concerning your image where you've circled a number of different areas that you describe as perhaps containing a "bit of scree" but whose appearance you think may have something to do with sunlight, I can't speak to the circled areas in the upper half of the image, but the circled areas in the lower half of the image all include a great deal of scree. There are also a couple other areas of scree in the lower half of the image that you didn't circle:
Here's a closeup of one of the areas you circled, the one in the lower right. It should remove any ambiguity that it is scree:

--Percy
EvC Forum Director

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Message 1074 of 1939 (755896)
04-13-2015 7:11 AM
Reply to: Message 1071 by Faith
04-13-2015 12:54 AM


Re: Best evidence for the title of this thread yet
Faith writes:
Faith writes:
Yes. But don't leave out WHY: If the irregularity is pre-existing then we're talking about LOOSE SEDIMENTS depositing on top of it and filling in the spaces and irregularities, but STRATA THAT ARE ALREADY FORMED but still soft enough to bend can be deformed by an object that intrudes into them AFTER THEY ARE ALREADY THERE.
So, 'loose sediments' cannot be deformed?
...
It takes something that has a form already to be deformed. You can deform ductile rock, ductile strata, you can deform damp modeling clay, you cannot deform a pile of scree or sand or dry powdery clay etc. This is common sense. Oh wait for it, I sense another denial of reality brewing in response.
To help move the discussion forward I'm going to attempt to explain the point Edge is making. Edge has in mind a scenario where recently deposited layers are still at the surface (likely a submerged surface) when an object like a rock falls on them. The layers, still unlithified and completely loose in that you could easily dig them up with a trowel, will become deformed in a manner like this image Edge presented earlier:
The gray rock in the center of the image fell onto already deposited soft sediments and deformed them. Only the layers that are deformed downward were present when the rock fell on them. Sedimentation then continued upon, over and around the rock.
The rock could not have been pushed up or down through the layers into this position after they were already there because in that case the layers would be deformed all upward or all downward, including all the layers that the rock would have had to pass through. That the layers are deformed downward for the lower half of the rock and upward for the upward half of the rock conclusively shows what had to have happened.
Edited by Admin, : Clarify the explanation by removing ambiguity and adding detail.

--Percy
EvC Forum Director

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Message 1077 of 1939 (755899)
04-13-2015 7:39 AM
Reply to: Message 1068 by Faith
04-13-2015 12:10 AM


Re: Best evidence for the title of this thread yet
Faith writes:
Oh, silly me. Of course, THEIR lie about strata is MY fault. Of course, should have known.
I wasn't going to respond to this, but now I see that JonF has responded, so I will comment.
I would like very much to address the concerns you occasionally raise, such as here from your Message 1057:
Faith in Message 1057 writes:
Totally substanceless posts attacking a poster are supposed to be against the rules.
Whether JonF is correct or not, he should be addressing his criticisms to your arguments. He should not be directing them at you personally. But you, too, make personal comments about yourself, as here in Message 1029:
Faith in Message 1029 writes:
Where is your evidence?
Mine's based on logic and a fine grasp of physical reality.
The question was about your evidence and had nothing to do with you personally, but you answered with claims about your own logic and grasp of reality. How can I request that people shouldn't make comments about you personally when you're doing it yourself?
When someone makes an appeal, such as you did in Message 1057 that I alluded to earlier, my inclination is to take a proactive approach, but I can't do that when within the last page or two I gave the supposedly aggrieved party a free pass when they did something similar.
Edited by Admin, : Fix incorrect message reference.

--Percy
EvC Forum Director

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Message 1084 of 1939 (755924)
04-13-2015 1:49 PM
Reply to: Message 1081 by edge
04-13-2015 11:09 AM


Re: Best evidence for the title of this thread yet
edge writes:
If the sediments draped over the rock were there prior to its emplacement, they would be disrupted.
It took me a while to arrive at what I think you really meant. Am I correct in thinking that you're describing a hypothetical here? Would it be a correct rephrasing to say, "Had the sediments that in the image are draped over the rock already been in place when the rock fell then they, too, would have been deformed downward. But they're not deformed downward, so therefore they were deposited upon and around the rock after it fell."

--Percy
EvC Forum Director

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Message 1090 of 1939 (755936)
04-13-2015 5:44 PM
Reply to: Message 1088 by edge
04-13-2015 4:54 PM


Re: Best evidence for the title of this thread yet
edge writes:
Is this as obscure to most people as it is to Faith?
I don't think it's really obscure to Faith, but more that she has a different scenario so firmly in mind that she doesn't see the one you're attempting to describe. It does feel to me that it should be possible to supply sufficient additional clarity to get your point across.
Except that the rock would have to pass through the upper layers in your scenario, completely disrupting, not bending them.
It might help to explain what "disrupt" means in this context. What should "disrupted" layers look like? Several times I've been expecting that you might confirm my own expectation that the layers above the rock could not possibly have been deflected upward as the rock passed downward through them, but you haven't done that, instead preferring to describe them only as "disrupted." Is my own understanding at fault?
Also, I expected that the layers where the rock passed through the layers above that they would no longer exist in the distinct form that we see in various images. A little ways above the rock the layers appear completely undisturbed, but like a nail fired too fast through layers of plywood or a bullet passing through a book, it seems like there should be a very distinct record of its passage.
And yes, the various layers were probably comparable in strength. So, what?
When Faith said that the layers above and below the rock appeared equally soft, I think she meant that in the sense that during the flood the layers were incompletely lithified and still soft, to the point where objects like rocks could pass easily through them.
They are not deformed to the same degree, nor in the same sense of deformation (up versus down).
I think some more detail concerning the implications of the differences in deformation of the layers above the rock versus the layers below might be helpful.
It might help if Faith were willing to comment on the case where a rock has fallen from a melting glacier, impacting on the sedimentary layers of the sea bottom. How would she tell the difference between these two scenarios:
  • The rock becomes buried about halfway along its diameter upon impact, and then was gradually covered over by additional sedimentation over the following centuries;
  • The rock passes through the sedimentary layers of the sea bottom coming to a stop some meters down, instantly completely buried.

--Percy
EvC Forum Director

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Message 1109 of 1939 (755977)
04-14-2015 1:09 PM
Reply to: Message 1094 by Faith
04-14-2015 10:15 AM


Re: STENO'S PRINCIPLES OF STRATIGRAPHY: ORIGINAL HORIZONTALITY, ETC
Hi Faith,
I'd like to help the discussion get past the issue of horizontality to focus more immediately on the topic, so I think it might make sense now to spend a little time on horizontality so that we may soon put it behind us.
I'm not taking sides in this discussion. When I don't understand something I'll say so, but that doesn't mean I think it's is wrong. So let me ask about what I don't understand concerning your position on horizontality: How horizontal does a surface have to be before it can no longer be considered horizontal and collect sediments?
Obviously the answer can't be that a surface must be 100% horizontal before it will collect sediments. If a surface is 99.99% horizontal it will collect sediments just as well as one that is 100% horizontal. Where is the transition from horizontal enough to collect sediments to not horizontal enough? How far off from horizontal can a surface be and still collect sediments? Will a surface that is 99% horizontal still collect sediments? 98% horizontal? 97%? 95%? 90%? 80%?

--Percy
EvC Forum Director

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Message 1118 of 1939 (755993)
04-14-2015 3:06 PM
Reply to: Message 1117 by edge
04-14-2015 2:35 PM


Re: STENO'S PRINCIPLES OF STRATIGRAPHY: ORIGINAL HORIZONTALITY, ETC
edge writes:
The point about the non-sedimentary formation of the erstwhile 'dropstone' in your example is that the whole formation was moving prior to, and possibly even after, deposition. Is that pretty clear to most people? I can try to explain better, but it really is outside of our discussion on sedimentary environments and unconformities. Don't feel bad, I thought it looked like a dropstone also and only found out by chasing the URL of the photograph to its original location.
I know I'm confused. I wasn't sure which example from HBD you were referring to. Since dropstones are being used as evidence of how sedimentary layers form this might be something important, but as I'm not sure what you're saying I'm not sure if it really is important.

--Percy
EvC Forum Director

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Message 1155 of 1939 (756073)
04-15-2015 9:55 AM
Reply to: Message 1121 by Faith
04-14-2015 6:54 PM


Re: STENO'S PRINCIPLES OF STRATIGRAPHY: ORIGINAL HORIZONTALITY, ETC
Hi Faith,
I'm going to say something regarding Steno, but I first want to repeat again that I'm trying to avoid becoming involved in the discussion. I'm only trying to bring some clarity to some simple side points so that discussion on the main topic can continue.
Regarding Steno, what he means by the word "fluid" is non-solid. Water, air, dust, blowing sand, etc., are all non-solids that he envisioned overlying any sedimentary layer undergoing deposition.
Steno's principle isn't about the surface the sediments deposit ON, it's about the surface FORMED BY the sediments as deposited.
Sure. But what you appear to be saying, at least in my interpretation and that of others here, is that strata are always deposited horizontally, regardless of the angle of the surface being deposited upon. For example, you appear to be saying that if a surface is 99% horizontal then any strata deposited upon it will be 100% horizontal. Isn't that what you're actually saying? And if it is then just let us know, because I think it should be possible for us to make it very clear to you why this is incorrect.
This is why I keep pointing out that if there is a very irregular surface for it to deposit on, such as that gneiss in the road cut picture way back there, or a nonhorizontal surface like HBD's diagram of a slope accumulating sediment, or the monadnocks or hills in HBD's other diagrams, or the surface of a rock that dropped into a stack of still-soft sediments, any new deposition of loose sediment, either dry or fluid, would not form a coherent layer over or around the irregular surface but would butt up against it.
Snow is a form of sedimentation that many people are very familiar with. Anyone who lives in an A-frame house in snow country, particular if the roof has a steep pitch, knows that the snow is deeper in the front and back next to the house. Why? Because some of the snow falling on the roof finds its way to the roof's edge and falls to the ground. As measured by it's horizontal cross section, an A-frame roof will accumulate less snow then the same area of an open field. That snow that didn't come to rest on the roof comes to rest next to the house in front and back.
The same is true of any rock that has fallen from a glacier and become partially embedded in the sea floor. Sediments falling on the part of rock sticking out of the sea floor will to some degree depending upon the shape of the rock fall beside it along its edge. This means that the part of the sea floor around the perimeter of the rock is receiving more sediments than the rest of the sea floor. Since more sediments are being deposited close to the edges of the rock than are being deposited further away, the layers do not butt up against the rock. They tilt upward.

--Percy
EvC Forum Director

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