now for the long...carbon dating is commonly called absolute dating or radiometric dating, because it is radiometric in method.
what is carbon dating
"definition = a method that uses radioactive carbon to date fossils or other biological material. it is based on the observation that the ratio of 14c to 12c in a biological sample is reflective to the ratio of 14c to 12c in the air at the time the csrbon was photosynthetically fixed by the organism that assimilated it out of the air, because the known half life of carbon is 5,730 years this decay rate can be used with the present day ratio and ratio of unknown age to date unknown sample"
what is c14 how is it formed?
c14 is the radioactive isotope formed when cosmic rays excite particles of n14 emiting a proton and absorbing a neutron = nitrogen 14 is converted to carbon 14 by cosmic rays
it now has two excess neutrons, making it unstable
how is c14 integrated into a living thing
c14 and c12 readily bind with carbon dioxide and then is transpired into any living creature. death starts the clock "fixing" the c14 which then begins to revert back to n14 (a 1st ordered reaction) it is spontaneous disintegration. this rate of disintegration (if known) can then provide a timeline of age based upon the ratio of c14 to n14 in a given sample
assumptions?
1) the rate of c14 decay has been constant
2) the c14/c12 ratio in the biosphere has been constant
3) the specimen was in equilibrium with biosphere when fixed
4) there was no carbon gained by the specimen while buried/after being fixed
5) today we can accurately measure the ratio in the specimen
number two is the biggest problem here, the world before the global flood was very different, the atmosphere is thought to have contained more carbon14 due to cosmic activity more water content in atmosphere would greatly affect the balance. less cosmic rays less c14 less disintegration... then there are geomagnetic field shifts which, again, would greatly affect c14 levels
then you have coal burning and nuclear activity that skew our baselines and "known" amounts
11 times the current geomagnetic field is a conservative amount and yet it would yield 2, 1/2 lives or 11,460 years variation = and thats only one factor
april 22, 1995 science news "earths magnetic follies revealed"
and just to further muddy the water ALL ocean samples (anything having been in the ocean of having ate anything in the ocean) are in question, and with a global flood, oops everything is now not accurate? most secular sources now agree on a global flood.
an equation t=(log(ao/a)k)/log2
t being unknown age of specimen
ao being expected c14
a being actual c14
k being 1/2 life of 5730
the value for ao (beginning c14 level) is based upon opinion!!!
there are many anomalies on record, one example being where a creature is dated at 5,000 years and its hair (still attached to its skin) is dated at 12,000 years. a seal killed by the researchers was dated to 1,300 years old; a snail was dated to 2,300 years old and it was still alive!!
two correction factors show the lack of "absolute" to the method
libbey 1/2 life = t1/2 5568 +- 30
cambridge 1/2 life = t1/2 x 1.03
i could go on but i would assume i have bored you beyond anything humane by this point.
so it all is based upon your suppositions you bring to the table, but there are no absolute methods without prejudice
anything too "young" they adjust out the interference
i dont know if that helped, but i assure you i am not afraid of science or apologetics, and i enjoy a lively discussion
-chad
i have alot more, but figured nobody cares at this point
some sources to consider on your own
radio carbon vol8 1966
science news april 22, 1995
radiological carbon ages in error 1981 lee, r.e.
anthropological journal of canada vol 19, no3
science vol 221 (1984)
science vol 141 (1963)
antarctic journal vol6 (1971)
gary parker, carl wieland, john c whitcomb, ken ham, desmond clark,
tandem accelerator mass spectrometer field backgrounds