One has to wonder, CTD, how you can copy and paste (and reassemble) so much, and still fail to do the same for evidence you claim was already posted (all you have to do is scroll up ...).

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Your pattern of whining when I clearly address an issue continues. Just to help you keep things straight now, you do the obfuscating. If you can't handle it by yourself, I'm sure there are others who will be glad to pitch in. But I won't be doing your bidding.

Congratulations are in order, BTW. LindaLou has things exactly backwards from what you intend.

RAZD says floods cut meanders & result in a straight river. LindaLou says it ain't so. I'd be disappointed in my failure to make things clear for her, but since she hardly pays any attention to what I post, I don't feel too bad.
No, CTD, you are the one that misunderstands. Let me see if I can be simple and clear:

(1) Floods do not carve meanders, they cut across them, and result in straightened flow patterns.

The river will bend around objects and follow the path of lowest energy gradient (usually downhill), but these bends are not meanders, they don't double back on themselves. Floods do not make meanders, they destroy them.

(2) Flow contained within the riverbanks (= a non-flood condition) cause more erosion along the outside of bend, and deposition of sediment along the inside of bends due to inertia, differential flow velocities, and fluid dynamics of laminar and turbulent flow.

Thus a river in a relatively flat floodplain will, over time, accent the bends in the river left after the last flood, making the bends more and more extreme until you end up with meanders ... or have another flood.

This is documented on many rivers, including the Mississippi, that flow in large flood plains subject to periodic floods.

http://en.wikipedia.org/wiki/Oxbow_lake
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When a river reaches a low-lying plain, often in its final course to the sea or a lake, it meanders widely. In the vicinity of a river bend, deposition occurs on the convex bank (the bank with the smaller radius). In contrast, both lateral erosion and undercutting occur on the cut bank or concave bank (the bank with the greater radius.) Continuous deposition on the convex bank and erosion of the concave bank of a meandering river cause the formation of a very pronounced meander with two concave banks getting closer. The narrow neck of land between the two neighbouring concave banks is finally cut through, either by lateral erosion of the two concave banks or by the strong currents of a flood. When this happens, a new straighter river channel is created and an abandoned meander loop, called a cut-off, is formed. When deposition finally seals off the cut-off from the river channel, an oxbow lake is formed. This process can occur over a time scale from a few years to several decades and may sometimes become essentially static.
What we see inside the Grand Canyon is the type of erosion characteristic of flow contained within the banks and occurring over long periods of time.

And we still have no evidence that the Grand Canyon was affected in any way by a biblical flood.

And we still have no evidence that a biblical flood occurred.

And we still have no answer for how creationism explains old clam fossils in complete and undamaged mature marine sedimentary deposits, layer upon layer, end up on mountaintops.

Enjoy.

Last edited by RAZD; 07/31/08 10:22 PM. Reason: , removed, clarity
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