Bob
YOU made a very specific "claim" about a "proof" of a young earth involving meteors, nickel, and river deltas. Were you just "speculating" or do you have ANY hard evidence to back up your claim? Please, IF you have the data present it including the "assumptions" that you make and if you DO NOT have the data WITHDRAW the claim.
Bob, do you remember when comet Shoemaker Levy hit Jupiter several years ago. Here is a picture of a fragment about a kilometer in diameter impacting Jupiter.
http://www.jpl.nasa.gov/sl9/gif/mssso4.gif A 1 km diameter impactor is not that large compared to some of the impacts Meatros is asking about. The African crator is the largest known but scientists believe there were others that were as large or larger in history whose evidence has been desroyed or sufficently concealed such that we do not know of them. But we do know of this one and others. We have the crators. We date the crators to times throughout history. With many of the larger impacts we even have fossil evidence of mass extentions at the same date. This is not mere speculation. We have the evidence. You can see the pictures yourself, you have been provided the links. There has been a lot of research lately on the Chicxulub crator. Google on "Chicxulub" and you can find all the information you could ever want. This is the one associated with the demise of the dinosaurs. It was estimated to be about 10 km in diameter. Smaller than the African impactor but 10 times the size of the comet hitting Jupiter above. BUt that is misleading. Given the same velocity and density, mass goes up with the
cube of the radius so ten times larger is 1000 times as massive. And since Chicxulub was believed to be an asteroid the density difference will add another factor of 2 - 4 fold in mass. That is a lot of destructive kinetic energy. (Someone want to give an equivilent number of Hiroshima sized bombs?)
You have a lot of large impactors to explain. I'll point you in the right direction. Helen has posted some information from Barry's website where a couple of large impacts fall at the dates for some Biblical calamities (although the meaning of the Peleg scripture seems to have a bit of controversy attached). But there are quite a few other large impacts, scattered throughout history that would have had devastating worldwide effects. Handwaving and rhetoric will not do. You got yourself into this now deliver, admit error, or graciously withdraw.
But even if you find a way to have the earth absorb all of these impactors in a few thousand years, the Chicxulub crator brings up the next subject. You would propose that all "kinds" came about, well within a few days of each other at least. It follows then that you would predict that
all kinds should be found in each layer of the geologic column allowing for the exception of extinction. So where are all the major mammal "kinds" in the layers older than Chicxulub? Do you know of any fossil cats, or apes, or whales (to throw in something marine more likely to get fossilized), or bears, or dogs, or humans, or deer, or so on found in layers older than the Chicxulub event? Neither does anyone else! Oh some shrew-like and mouse-like mammals are there, but no elephants. Where are they? The numbers should be on the same order as other fossils found in those layers.