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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
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Author | Topic: Evidence that the Great Unconformity did not Form Before the Strata above it | |||||||||||||||||||||||||||||||||||||||
edge Member (Idle past 1734 days) Posts: 4696 From: Colorado, USA Joined: |
Today I had the opportunity to visit the area near the St. Lawrence River where the roadside unconformity (discussed earlier) is located. Here's a link to the pictures This item might not exist or is no longer available - OneDrive...
Nice photos. Not sure if they resolve much of the discussion, but the 'gaps' seem to have disappeared, and still, we see no faults that penetrate across the unconformity. The lower white beach sand still appears draped across the irregular top of the gneiss. Thanks for the pictures.
They may or may not be useful, but it was nice just to touch and see them firsthand.
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JonF Member (Idle past 196 days) Posts: 6174 Joined: |
They certainly make it clear that there are small overhangs between layers and no deep caves or floating layers.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
Faith writes: I could do a dry angle-of-repose experiment now, getting back to Coragyps' challenge, but the others I really can't set up properly and want to wait until family get here toward the end of June. They can also get some of the material I need that would be hard for me to get. It's toward the end of June - let the thread know if you need any last minute assistance or information.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
Family arriving for a week on the 27th. I have a list of items I need them to get for the experiments. Some time during that week we should be set to go.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
It might be a good idea to list the experiments you plan to perform.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
I really only have the one in mind for this thread, to see if sand will form an even layer on a sloped surface. I have in mind using plastic or oil-based clay to form the surface inside a container, fill it with water and sprinkle sand as evenly as possible from the top. Probably do it a few times.
But I also want to do the simple angle-of-repose test too,which is the reason Coragyps sent the container in the first place, both dry and wet. Anything else you'd suggest?
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NoNukes Inactive Member
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I'd suggest that if any youngsters are coming on that visit that you get them to help. Whatever the outcome, I'll bet that they'd love to help play in wet dirt.
Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846) History will have to record that the greatest tragedy of this period of social transition was not the strident clamor of the bad people, but the appalling silence of the good people. Martin Luther King If there are no stupid questions, then what kind of questions do stupid people ask? Do they get smart just in time to ask questions? Scott Adams
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
I've been particularly looking forward to involving my seven-year-old grandson in the project, maybe teaching him some Geology. Yes, I'm sure gramma knows enough to do that, even without offending actual Geologists. Not sure how the three-year-old will behave, maybe have to give him a bucket of sand and put him out on the porch.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
Faith writes: I really only have the one in mind for this thread, to see if sand will form an even layer on a sloped surface. I have in mind using plastic or oil-based clay to form the surface inside a container,... Using clay instead of sand to form the top surface means you can create very steep angles, so it's important that the surface you create from clay is not steeper than the sand's angle-of-repose, so I propose you perform the angle-of-repose experiment first:
Now perform the sloped-surface experiment:
Edited by Admin, : Improve the instructions.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
I know I shouldn't resent your "help" but I do. I know what I'm doing.
The suggestions I had in mind were other experiments I could do. Edited by Faith, : No reason given.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
Faith writes: I know I shouldn't resent your "help" but I do. I know what I'm doing. Apologies if the advice was too elementary, but it is because you *don't* know what you are doing (as demonstrated by the fact that you that actually have to perform these experiments just to demonstrate to yourself the most elementary and intuitively obvious facts of the real world) that I wanted to make sure you that both you and the people you're debating with agree about which experiments are most relevant to the discussion, and how they should be carried out so that both sides can agree about what the outcome means.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
What's "elementary" is that the strata were all formed horizontally and this idea that they ever formed on a slope, even if it's possible in some superficial way, is what's crazy.
Edited by Faith, : No reason given. Edited by Faith, : No reason given.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
Faith writes: What's "elementary" is that the strata were all formed horizontally and this idea that they ever formed on a slope, even if it's possible in some superficial way, is what's crazy. I'm concerned about your use of the phrase "superficial way." It is important to insure before you perform them that the experiments you're performing are not, in your view, a "superficial way," and that you'll accept the outcome, whatever it may be.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
I'll accept that it's possible, of course. And I expect to do a creditable job of it. I'll have photos you know. Anyone else can replicate the experiment anyway, as many have already suggested they might, so why are you so feverishly concerned about how I do it anyway?. Is it possible for you to stop being this interfering busybody you've been for months now?
Edited by Faith, : No reason given.
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Admin Director Posts: 13038 From: EvC Forum Joined: Member Rating: 2.1 |
Faith writes: ...so why are you so feverishly concerned about how I do it anyway?. Is it possible for you to stop being this interfering busybody you've been for months now? I'm trying to insure that this thread in which so many have invested so much can resume discussion of the topic by making sure you're able to assure yourself of the way sediments are really deposited. It shouldn't even be necessary for anyone to have to do the "sedimentation on a slope" experiment to understand that sediments accumulate on slopes. A simple thought experiment should suffice. Imagine a few grains of sand falling on a submerged sloped surface. How are those grains of sand going to slide down the slope? After all, sand is gritty. Unless the submerged surface is already steeper than the angle of repose, those grains will stay there. If that weren't true there could never be any hills of sand, not in the desert and not under the sea. There wouldn't even be any such thing as an angle of repose - all collections of sand everywhere would be level, and sand would behave like water. But please, do the experiment anyway.
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