Happy wrote:
What would be the ramifications of a literal, global flood on all the dating methods employed by science?
and
Number 2 would be the interesting topic to cover, but in general what would be the effects of that much water and pressure on dating schemes. General question, nothing too overly complicated or specific.
Thanks for the reply. It sounds like you are looking at #1, or at least mainly focussing on the effects of those things on the dating schemes.
1. If the earth were 4.5 billion years old, and a global flood happened in ~2350 BC as in a literal reading of genesis, then how would the dating methods be affected?
So, let's go over some dating methods:
1. varves - previously deposited varves could be washed away completely. If not washed away, a flood layer deposited on top of them would not destroy them. Pressure could compact them into sandstone or such. None of those would add layers. So the information could be lost, or if not lost, would not be altered (the layers would still be there in the same number).
2. Dendrochronology - the flood could destroy tree rings, or could bury and fossilize them. I don't see any way that that a flood would make a young dendro. sample look old.
3. C-14. The water and pressure would not change the rate of radioactive decay, because all kinds of experiments have been done to show that radioactive decay rates are unaffected by pressure, water, chemicals, temperature, movement, you name it. Changing the atmospheric concentration of C14 would change the method results, but that would make a big spike or dip in samples from around 2350, which we don't see. Any change would have to also affect the other methods the same or we would't see C-14 matching so well (after a constant calibration factor) with the many other methods it agrees with.
4. Ice cores - the flood would destroy any ice layers, so there would be none older than 2350 BC. Ice floats, so even ignoring the melting affect of the water, the sheets would float off the land and be lost.
5. Uranium disequilibrium - like other radioactive methods, it's unaffected by pressure, water, chemicals, temperature, movement, etc. So no change here.
6. Themoluminesence - I don't know enough about this one to say.
7. Obsidian hydration - obsidian hydration rates are affected by temperature, and likely moisture, though their distance to the suface is the biggest factor. Deeply buried samples would slow their aging and hence look younger than they are. Scientists take into account exposure conditions, and deeply buried samples aren't used. So perhaps a flood would make many samples give random results?
8. Amino Racimization - the protein must be preserved for this to be used, so anything that would destroy proteins would simply destroy the sample. Heated protein is obvious because it is "denatured". Water has no effect. So as long as the sample survived, it seems this would be unaffected.
9. Electron spin - is reset by heating, so if a flood happened with a lot of heat, all electron spin tests would give a date of 2350 BC or more recent.
10. K-Ar is unaffected by heat/water, so no affect, as with other radiometric dating methods (again, assuming the sample is intact - take a sample from inside a rock, etc.)
11. Geomagnetic polarity. - any changes to the earth's field would be recorded by this method, so a flood where the field changed would be detected by it. Because large rock masses cannot be cooled below a certian rate, we've seen plenty of formations that formed millions of years ago, and took thousands of years to cool, each in succession after the other.
12. U to Pb, Rb to Sr, etc, are all radiometric - see #10.
13. dislocation formation - woud be unaffected as it is caused by cosmic rays and occurs deep inside a metal sample, where the water and chemicals cannot reach. Temperature has no effect.
14. Heliometric dating method (based on calculations and observations of the sun, such as seismic waves in the sun) would of course not be affected by things going on on the earth, even if the whole earth blew up.
So hey, there's scratching the surface, at least!
Papias