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单词 radiodating
释义

> as lemmas

radiodating
radiodating n.
Brit. /ˌreɪdɪəʊˈdeɪtɪŋ/
,
U.S. /ˌreɪdioʊˈdeɪdɪŋ/
any method of dating rocks, fossils, artefacts, etc., which depends on the measurement of the proportions of radioactive isotopes, e.g. radiocarbon and potassium–argon dating.
ΘΚΠ
the world > time > reckoning of time > chronology > [noun] > assignment to a time or dating > dating methods
fluorine test1895
cross-dating1939
age dating1941
carbon–14 dating1950
radiocarbon dating1950
carbon dating1952
radiodating1962
radiometric dating1963
TL-dating1972
1962 A. Beiser Earth vi. 132 Recently, radio-dating studies have been made of meteorite fragments, giving age estimates as great as 4.5 billion years.
1965 Times 16 Nov. 10/3 Pottery is the commonest artifact discovered in ancient sites, but carbon-14 methods of radio-dating serve only for organic matter like wood or cloth.
1975 K. H. Goulding in Williams & Wilson Biologist's Guide to Princ. & Techniques Pract. Biochem. vi. 196 The assumptions made in radiodating are sweeping and hence palaeontologists and anthropologists who use this technique can only give very approximate dates to their samples.
1993 Jrnl. Petrol. 34 653 Radiodating shows that both types of leucogranite have identical ages of 372 ± 3 Ma.
extracted from radio-comb. form2
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as lemmas
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