posted by Dani on Jan 20
southeastside asked:
Yesterday there was news of a 3.3 million year old Australopithecus afarensis fossil from Ethiopia. I’m just curious as to how they ascertain the age. I know it’s not carbon-14 dating, that’s 2 orders of magnitude beyond its range. It’s been a while since I learned about this stuff, so thanks for refreshing my memory.
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Yesterday there was news of a 3.3 million year old Australopithecus afarensis fossil from Ethiopia. I’m just curious as to how they ascertain the age. I know it’s not carbon-14 dating, that’s 2 orders of magnitude beyond its range. It’s been a while since I learned about this stuff, so thanks for refreshing my memory.
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January 22nd, 2009 at 10:46 am
The site I use is match.com The old fossils don’t have a picture there.
January 22nd, 2009 at 11:51 am
Sending the Old fossil on a date with a Blonde, Brunette and a red head - he may react to one of them
January 24th, 2009 at 8:13 am
Looks like there’s aluminum, chlorine, calcium & iodine dating…
January 27th, 2009 at 6:12 pm
radioactive dating, using certian elements such as carbon-14, scientists are able to figure out how old a fossil was
January 30th, 2009 at 6:52 am
They measure the decay of other radioactive elements, not carbon. The half life of carbon 14 is only 15,000 years or so. For anything older than that they measure for example, how uranium decays into lead. The article below may help.
January 30th, 2009 at 8:10 pm
check it out on