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单词 carbon date
释义

carbon daten.

Brit. /ˈkɑːbən ˌdeɪt/, U.S. /ˈkɑrbən ˌdeɪt/
Origin: Formed within English, by compounding. Etymons: carbon n., date n.2
Etymology: < carbon n. + date n.2 Compare slightly later carbon-date v., carbon-dated adj., and carbon dating n. Compare also radiocarbon date n. at radiocarbon n. and adj. Compounds.
A date established by carbon dating; a radiocarbon age. Also called radiocarbon date.Raw carbon dates are cited in radiocarbon years b.p. (before present). Calibrated carbon dates, which have been corrected for fluctuations in the levels of carbon-14 in the atmosphere, are often cited in calendar years.
ΘΚΠ
the world > time > reckoning of time > chronology > [noun] > assignment to a time or dating > dating methods > date ascertained by
age dating1941
carbon date1950
radiocarbon date1950
carbon–14 date1951
1950 Amer. Antiq. 15 339/2 Carbon dates suggest that this florescence came at an earlier time than we have been used to thinking.
1968 S. Afr. Archaeol. Bull. 23 49/2 Carbon dates for the Wilton culture could make the occupation as early as 7610 ± 110 B.P.
1986 Man 21 400 The relationship between raw and calibrated carbon dates had not yet been perceived as a problem.
2003 Jrnl. Anthropol. Res. 59 118 Hassan also provides summaries of carbon dates for the oldest domestic or putatively domestic plants and cattle in Africa.
This is a new entry (OED Third Edition, December 2008; most recently modified version published online December 2021).
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n.1950
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