Cosmogenic Carbon-14 in Meteorites and Terrestrial Ages of "Finds" and Craters

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Science  08 Jun 1962:
Vol. 136, Issue 3519, pp. 875-876
DOI: 10.1126/science.136.3519.875


Carbon-14 has been measured in several stone and iron meteorites. For "falls," the C14/Al26 ratios in stones and the C14/Cl36 ratios in irons are consistent with constant irradiation. The stone "finds" have radiocarbon ages of up to ≥ 21,000 years. The Henbury craters are apparently ≤ 7,000 and the Odessa craters ≥ 11,000 years old.