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Author Topic:   Radioactive carbon dating
MarkAustin
Member (Idle past 3836 days)
Posts: 122
From: London., UK
Joined: 05-23-2003


Message 188 of 221 (529920)
10-11-2009 5:08 AM
Reply to: Message 177 by Calypsis4
10-09-2009 11:29 PM


Re: C14 dating goes here
Applying the uniformitarian approach of extrapolating 14C decay into the indefinite past translates the measured 14C/12C ratios into ages that are on the order of 50,000 years (2-50000/5730 = 0.0024 = 0.24 pmc). However, uniformitarian assumptions are inappropriate when one considers that the Genesis Flood removed vast amounts of living biomass from exchange with the atmosphereorganic material that now forms the earth's vast coal, oil, and oil shale deposits. A conservative estimate for the pre-Flood biomass is 100 times that of today. If one takes as a rough estimate for the total 14C in the biosphere before the cataclysm as 40% of what exists today and assumes a relatively uniform 14C level throughout the pre-Flood atmosphere and biomass, then we might expect a 14C/12C ratio of about 0.4% of today's value in the plants and animals at the onset of the Flood. With this more realistic pre-Flood 14C/12C ratio, we find that a value of 0.24 pmc corresponds to an age of only 4200 years (0.004 x 2-4200/5730 = 0.0024 = 0.24 pmc). Even though these estimates are rough, they illustrate the crucial importance of accounting for effects of the Flood cataclysm when translating a 14C/12C ratio into an actual age.
Even assuming a flood and a sequestering of biomas by the same, which I do not, none of this would affect the ratio C14/C12, so ages based on this ratio would be unaffected.
Once again: No chemical or mechanical process on earth can affect one isotope differently from another.

This message is a reply to:
 Message 177 by Calypsis4, posted 10-09-2009 11:29 PM Calypsis4 has not replied

Replies to this message:
 Message 189 by Dr Jack, posted 10-11-2009 9:10 AM MarkAustin has not replied
 Message 192 by edge, posted 10-11-2009 12:17 PM MarkAustin has not replied
 Message 193 by PurpleYouko, posted 10-22-2009 12:23 PM MarkAustin has not replied

  
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