Summations Only

I agree. I try to imagine the scenario Faith is describing and see if there is any way it could work (you know all too well how that usually turns out though - being accused of misrepresenting her position , etc. ) Her scenario assumes the sediment was all present when the water begins recession. I can see this type of sequence developing as the ocean levels fall. Do you not think so? I certainly see this as a much more viable explanation. Just offering suggestions as to how Faith could provide a valid model / hypothesis.HBD

But Faith's objection to this is that the Flood would have been an event unlike any other in history, as so, we need to understand it differently. On one level I would agree with that. However, I don't think the evidence it left behind would look like it was deposited slowly over long periods of time.HBD

I thought others might appreciate this resource.It is the syllabus for the GEOL342 - Sedimentation and Stratigraphy course at the University of Maryland. The bottom half of the page is the lecture and exam schedule with links to the lecture notes.Of particular interest to this thread would be: Sequence stratigraphy

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Transgressive-regressive packages bounded by unconformities make up the sedimentary record of most basins on cratons and continental margins. Some of these unconformities span great distances and long periods of time, and these divide the stratigraphic record of continents into discrete packages called sequences. These unconformity-bounded packages likely represent large scale tectonic or eustatic events that persist for tens of millions of years. These are natural intervals of sedimentary history that may cross biostratigraphic period boundaries. These form the basis of sequence stratigraphy.

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Sequence: discrete package of sediments bounded by the unconformities that divide transgressive-regressive cycles from one another. Note: These unconformities generally form through erosion of exposed sediments at lowstand.

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• Some of the unconformities span great distances and long time periods
• Usually represents large scale tectonic or eustatic events that persist for up to tens of millions of years
• Natural intervals of sedimentary history that may cross bio/lithostratigraphic boundaries

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HBD

Is that why you thought I was being patronizing? I really try to not purposely use terms that you wouldn't understand. If I do, you just need to ask or break out google. Well, look at the diagram of Walther's Law again. Where in this sequence does the water have the highest energy (from motion)? Yes, at the shore. The lowest energy region is the furthest offshore. This is why foram oozes do not form near shore, there is too much energy in the wave motion to allow such fine particles to fall out of solution. Likewise, there is not enough energy in the offshore water to keep sand particles suspended, so they fall out near shore.An easy way to demonstrate this idea is to take a rock that is about 1/2" in diameter and one that is about 1/4" in diameter. Drop them both at the same time from about 10" from a surface top. Which one hits first? Correct, they both hit at the same time because gravity accelerates them at the same rate.Now take those same rocks and drop them into a container of water (2 - 4 liters should do it) at the same time. Now which one hits bottom first? The larger one. Why? Has gravity changed? No, it is because the water exerts a force upon the stones. The heavier rock is able to overcome the water's resistant force faster than the smaller rock.Now imagine (unless you have a way of actually doing this, then by all means do it) doing the same experiment in a channel of running water. Which rock will be displaced further down the current? The small one of course. Why? Because the smaller rock remains suspended for a longer time.What does this have to do with anything? The smaller the particle, the more the water's energy is able to act upon it and the longer it will remain in suspension. That is why we have sediment grading such as depicted by Walther's Law. As the "energy gradient" shifts towards or away from shore, so does the sediment.You will find these "energy gradients" in all kinds of depositional systems.HBD

Think about that Faith! You imagine that type of tectonic movement happening 135,000 times faster (540 million years of plate motion condensed into 4,000 years). Even if you start from Pangea (around 300 mya) the rate is 75,000 times as fast. You are practically watching that video in actual speed.HBD

Real quick here ... Not totally sure what you are asking for here. It seems you have some ambiguous qualifiers that make it impossible to meet the demands. But try these interesting images from Canada:

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A 6 m long core sample taken from the deep sea floor shows fine grained mud layers alternating with sandier layers. The latter are interpreted to have been deposited from submarine landslides triggered by g reat earthquakes. The mud layers formed by the slow continuous rain of finer sediment settling from the ocean. The volcanic ash at the bottom is dated as 7700 years old.

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A trench cut through a coastal intertidal marsh exposes a peat layer, the remains of a former, now buried, marsh. The marsh abruptly subsided 1/2-1 m in a great earthquake about 300 years ago. The sand above the buried peat layer was swept into the subsided coastal region by the waves of the resulting great tsunami.

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HBD