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Spallogenic 14C in High-Altitude Rocks and in Antarctic Meteorites

Published online by Cambridge University Press:  18 July 2016

A J T Jull ,
D J Donahue ,
T W Linick  and
G C Wilson
A J T Jull
Affiliation:
NSF Accelerator Facility for Radioisotope Analysis University of Arizona, Tucson, Arizona 85721
D J Donahue
Affiliation:
NSF Accelerator Facility for Radioisotope Analysis University of Arizona, Tucson, Arizona 85721
T W Linick
Affiliation:
NSF Accelerator Facility for Radioisotope Analysis University of Arizona, Tucson, Arizona 85721
G C Wilson
Affiliation:
NSF Accelerator Facility for Radioisotope Analysis University of Arizona, Tucson, Arizona 85721
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Abstract

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14C in high-altitude rocks and in Antarctic meteorites of long terrestrial age has been found at levels consistent with in-situ production by cosmic rays. Levels of 0.2–0.59 dpm/kg (or 1.0–2.6 × 10614C/g) are found in high-altitude samples ranging from 3300 to 5460m. Similar values are observed in Antarctic meteorites that have been dated by 81Kr by Freundel, Schultz & Reedy (1986) as over 100 kyr old.

Type
III. Global 14C Variations
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 719 - 724
Copyright
Copyright © The American Journal of Science 

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