Deposition and Erosion of Sediments

Hi Faith; it seems you are stating..."Sedimentary rock cannot form. It would be obliterated by erosion faster than its formation."If this is not accurate perhaps you can clarify your quote above.

You can post pictures here.Hopefully this will be helpful to the discussion: Faith - I guess I'm having trouble understanding-
Are you proposing an alternative mechanism for the formation of the a single layer? If so, why is your mechanism more reasonable than what you are arguing against? The effects of real erosion produced the canyon, which I guess is pretty obvious (even though I hate that word). What you haven't addressed is why we would should expect the erosion rate to be the same a hundred yards into the wall of the canyon as it is at the site of the river itself.I think you really need to address a seemingly key issue with your argument - that, as Nosy mentions above, NET sedimentation is the issue, and produced the results we see. In other words, as long as the sedimentation rate is greater than the erosion rate, sedimentation will occur.You seem to be arguing that erosion would vastly exceed sedimentation across the entire landscape, not unlike it did in the formation of the canyon itself due to the erosive forces produced by the river. Do you have any evidence for a higher rate of erosion than sedimentation?If not, your argument seems to have little basis.This message has been edited by Admin, 03-17-2005 09:23 AM