Can you use carbon dating on diamonds
I'm probably teaching grandmother to suck eggs, as the old saying goes.
Getting back to my OP - I feel that some definitive work needs to be done in this area.
That led me to this non-technical article, and from there followed a link to the asa3article. I think the news item on their front page refers to a much older event. Thanks for your responses and the links to various sources. I am working my way through Kirk Bertsche's 9 page essay on the subject. I'm a complete non-expert in this field of radiometric dating, but it strikes me reading this how contamination by modern carbon introduced during sample preparation seems to be a severe issue.
I found this on page 10 of Google's "carbon 14 RATE" search: what gives? What happened, from what I recall, is that someone hacked Talk Origins and managed to get the site to display hidden spam links at the bottom of pages, making Google think it was a spam site and thus getting it removed from Google. I'm wonder whether they've extracted samples under an inert atmosphere and then used laser ablation to ionize samples in their mass spectrometers?
Of course, the problem is that this process results in contamination with old carbon, making the sample appear older.
I've been poking about on the internet again (as you do) and found a whole load of stuff by creationists about the problems with carbon 14 radiometric dating.Newer, more accurate techniques use mass spectroscopy. It doesn't take much contamination to spoil a sample with near-zero quantity of C14. Another possible avenue is C13, which has a small but non-zero neutron absorption cross section.Mass spectroscopy, like any man-made measurement, is not perfect. Creationists pounce on this explanation as meaning all carbon 14 readings are suspect. While that same level of contamination (if this is the explanation) will add some error to the dating of some reasonably aged sample, the error will be small -- so long as the sample is not too old. By either mechanism, this is essentially internal contamination..action_button.action_button:active.action_button:hover.action_button:focus,.action_button:hover.action_button:focus .count,.action_button:hover .count.action_button:focus .count:before,.action_button:hover .count: Error Banner a.modal_overlay.modal_overlay.hidden.modal_overlay .modal_fixed_close.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:before.modal_overlay .modal_fixed_close:hover:before.modal_overlay [email protected](max-width:630px).modal_overlay [email protected](max-width:630px).