Evidence that the Great Unconformity did not Form Before the Strata above it

quote:

---

Into the air? They just hover there at a distance from the main rock until the sand starts depositing and providing bedding planes for them to lie on?

---

Obviously not. They lie on the surface of the sand that has already been deposited. Or maybe partially embedded in it. Like pebbles on a beach.That's no problem at all.

Hunh? Why is that? Why can't gravity and water move the gravel into the positions shown. This is another weird question. Of course deposition doesn't move rocks. They move by gravity and traction with water just like in any stream. Whut?? I think you just made my point...But I'm not sure. It needs more than that. You say that the draped layers are drag folds because of an 'intrusion' of gneiss; then you go on to say that evidence for the intrusion would be the drag folds.Have you ever heard of a 'circular reasoning fallacy'? Again, thank you for making my point.You don't have any faults, do you? At least none that would show up on a diagram... Why would there not be any sand there first? What on earth are you talking about? Sorry, not seeing it. So, we have a beach and layers of gravel interbedded with the sand. What's the problem? Would someone please translate this into something meaningful? How do you get this from the diagrams that we have been looking at?At the same time, I notice that Faith does not propose an alternative.

If we're talking about blasting holes, then no, not "little horizontal lines." Vertical lines. Here's the image again: I'm not sure how clearly you can see, but the parallel vertical lines of the blasting holes are very obvious. Are you sure you can't see them? Only half the diameter of the holes is left. The other half was in the rock that was blasted away.Explaining again how the blasting of road cuts is done, vertical holes are drilled down from above in a row, then explosive charges are added to the holes, then the explosive is ignited, setting off a blast. What remains behind is a vertical rock face with half the diameter of the blasting holes left behind.

As well as I can guess what Faith is imagining is that the whole layer of sand has to be dropped at once. So for the pieces from a lower layer to be part way up in it they have to be suspended there while the sand layer builds up around them. I guess this is part of problem that is raised when you don't think any time can pass while the sediment builds up gradually.If you want to help Faith with this you are going to have to describe, in excruciating detail, how the archean gravel is eroded off a little at a time. Some rolls down onto sand already depostited and sits there while more tapetes is piled on top, them more gravel erodes down and so on. I am not willing to take the time to make if clear enough for her. I'll enjoy watching you try.

Ah! Right...Everything is the same age in YECland. The Claron is just different day from the Tapeats.I suppose that is why processes, particularly geological ones, are so hard for them to understand.

Here is an explanation of pre-split blast holes. What you can notice is the close spacing and the angle of the pre-split holes sloping toward the roadway or pit. They are close-spaced to make sure that cracks are propagated from hole to hole. The angle designed to help provide a stable, long-lasting and safe slope. The wider-spaced, vertical hole are there just to break rock. Here is a drill rig in the process of drilling pre-split blast holes. And here is the final product in a railroad cut. Note the steep sloping angle of this roadcut. That is a typical pattern in mining and civil engineering. Edited by edge, : No reason given.

I'm suspecting more and more that Faith also has difficulty thinking in 3D. Her recent comments on the road cut and cut construction has highlighted that. Some folk just don't operate well when attempting to imagine things in 3D.It's as if she imagines that the road cut face existed and guys went to work drilling on it, making decisions about what to blast and what not to blast by looking at it. No recognition that this was just a small hill in a pasture that they drilled down into relatively blind and blew it to bits.Combine the rigid belief in that which doesn't exist with spatial imagination issues and bad eyesight and there's not much to work with.Quite a challenge.JB

Maybe the block diagram in my Message 1506 will help.

You say 'drill holes" so I'm looking for holes in the rock face. I'm thinking the charges would have to be inserted into the rock face from the front through the rock that ultimately gets blasted away, but that doesn't make sense, it's just what the idea of drill holes suggests. I don't see any pattern of holes except in the picture Percy sent me where there are quite a few horizontal gashes between the lines he drew.Now that I get that they are drilled from the top it's a whole other thing. From the front they look like LINES, not holes. I'm still not sure in some of the pictures if I'm looking at the lines someone drew on the picture over the rock face or at the half of the drill holes that is left after the blasting. Edited by Faith, : No reason given.Edited by Faith, : No reason given.Edited by Faith, : No reason given.

All that does help finally make it clear that the blasting is done from the top of the rock, though the whole procedure as shown in the diagram isn't all that clear. So the cup-like objects in a row in front of the drill rig coming toward the camera are the "pre-split" blast holes?The problem was the term "holes" which had me picturing holes in the face of the rock, never expecting to see them from the side, where they look like lines. Drawing the lines on the pictures just made it all the more confusing because I was looking for a pattern of holes in the rock next to the drawn lines.Edited by Faith, : No reason given.

The problem is that they (the gravel from the hill which are drawn at some distance from the hill) are being talked about as if they were there before the sand was deposited which would put them in mid-air. But no matter, it's half a joke anyway.

Faith, the problem, as shown here once again, is that you are willing to opine on matters of which you know nothing.Most folks I know will look up something they don't know, and learn from that. I highly recommend it.

I did look it up. And I did not "opine" on anything having to do with the logistics of blast holes. What you quote is me trying to make sense of the information people were giving me.ABE: Turns out it was really rather a simple problem caused by people who are aware of the procedures of road-cut blasting not realizing that someone unfamiliar with them would read "holes" as something you see from the front.Edited by Faith, : No reason given.Edited by Faith, : No reason given.Edited by Faith, : No reason given.

Those would be temporary covers for the blast holes so that they do not fill up with surface debris or water.And the drill would actually be drilling consecutive holes away from the camera and the covers are for holes already drilled.

Do you see any parallels between this situation and your relationship to geology in general?