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单词 carbon-date
释义

carbon-date

verb [with object]
Determine the age or date of (organic matter) from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains: it proved impossible to carbon-date the bone fragment accurately a rock painting from Catal Hyuk in Turkey has been carbon-dated to 6200 BC...
  • The top floor is the attic space, beautifully preserved with roof timbers carbon-dated to 1566.
  • Some stromatolite fossils found in the Pilbarra region of northwestern Australia have been carbon-dated at around 3.5 billion years old!
  • A lynx skull found in Scotland had previously been carbon-dated at 2,000 years old.
noun (carbon date)
The age or date of organic matter as determined by the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains: the carbon dates were all in the last 5,000 to 10,000 years...
  • The first radioactive carbon-dates were published in 1949.
  • Furthermore, there was no pattern of younger to older in the carbon-dates that correlated with the evolutionary/uniformitarian 'ages'.
  • The dates that they publish in this paper actually correspond to the carbon-dates we already have.
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更新时间:2025/3/24 8:49:23